WO2021019899A1 - Antenna device, antenna module, and communication device - Google Patents

Antenna device, antenna module, and communication device Download PDF

Info

Publication number
WO2021019899A1
WO2021019899A1 PCT/JP2020/021683 JP2020021683W WO2021019899A1 WO 2021019899 A1 WO2021019899 A1 WO 2021019899A1 JP 2020021683 W JP2020021683 W JP 2020021683W WO 2021019899 A1 WO2021019899 A1 WO 2021019899A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
radiation plate
antenna
antenna device
grounding
Prior art date
Application number
PCT/JP2020/021683
Other languages
French (fr)
Japanese (ja)
Inventor
薫 須藤
Original Assignee
株式会社村田製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社村田製作所 filed Critical 株式会社村田製作所
Publication of WO2021019899A1 publication Critical patent/WO2021019899A1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements

Definitions

  • the present disclosure relates to a multi-band antenna device, an antenna module, and a communication device.
  • Patent Document 1 An antenna device applicable to a multi-band type communication device capable of supporting communication in a plurality of frequency bands is disclosed, for example, in Japanese Patent Application Laid-Open No. 2003-283240 (Patent Document 1).
  • the antenna device disclosed in Japanese Patent Application Laid-Open No. 2003-283240 emits high-frequency signals having different frequencies from a multilayer substrate and a flat plate-shaped grounding plate (grounding electrode) arranged under the multilayer substrate3. It is provided with one flat radiation plate (radiating element) and one feeding line connected to the feeding point of the radiation plate arranged at the uppermost layer of the three radiation plates and shared by the three radiation plates. ..
  • the three radiation plates are laminated so as to overlap each other when the antenna device is viewed through from the normal direction of the ground plate. As a result, the length direction of the antenna device (extending direction of the ground plate) is reduced.
  • the three radiation plates disclosed in Japanese Patent Application Laid-Open No. 2003-283240 are so-called ordinary patch antennas that are not connected to the ground plate.
  • the length of the radiation plate is set to less than half of the wavelength emitted by the antenna, the radiation characteristics deteriorate. Therefore, it is difficult to reduce the length of the radiation plate to less than half of the wavelength, and it is difficult to further reduce the size of the antenna device.
  • the present disclosure has been made to solve such a problem, and an object of the present invention is to provide a multi-band type antenna device which can be miniaturized and whose radiation characteristics can be easily improved. ..
  • the antenna device includes an antenna unit having a flat plate-shaped ground plate, a flat plate-shaped first radiation plate facing the ground plate, and a flat plate-shaped second radiation plate facing the ground plate, and a first radiation plate. It is provided with a first feeder line connected to the feeding point of the above and a second feeding line provided separately from the first feeding line and connected to the feeding point of the second radiation plate.
  • the first radiation plate has a first grounding end that is connected to the grounding plate.
  • the second radiation plate has a second grounding end that is connected to the grounding plate.
  • the first radiation plate and the second radiation plate have a portion that overlaps with each other. This makes it possible to reduce the size of the antenna device in the length direction (extending direction of the ground plate).
  • the first radiation plate and the second radiation plate have a first grounding end and a second grounding end connected to the grounding plate, respectively. That is, the first radiation plate and the second radiation plate are not a normal patch antenna that is not connected to the ground plate, but a one-sided short-circuit type patch antenna (plate-shaped inverted F antenna) in which one end is connected to the ground plate. is there.
  • a one-sided short-circuit type patch antenna plate-shaped inverted F antenna
  • good radiation characteristics can be obtained by reducing the length of the radiation plate to about one-fourth of the wavelength emitted by the radiation plate. Therefore, the length of each radiation plate can be halved as compared with the case of using a normal patch antenna, and the antenna device can be further miniaturized.
  • a first feeder line connected to the feeding point of the first radiation plate and a second feeding line connected to the feeding point of the second radiation plate are separately provided.
  • the length of the feeder line can be adjusted individually for each radiation plate, so that impedance adjustment can be easily performed.
  • the radiation characteristics can be easily improved.
  • FIG. 1 It is a block diagram of an example of a communication device. It is a perspective view which see through the inside of a communication device. It is a side view which see through the inside of a communication device. It is the figure (the 1) which saw through the inside of the antenna device from the X-axis direction. It is a perspective view which saw through the inside of an antenna device. It is sectional drawing (the 1) of the antenna device. It is sectional drawing (the 2) of the antenna device. It is sectional drawing (the 3) of the antenna device. It is sectional drawing (the 4) of the antenna device. It is sectional drawing (the 5) of the antenna device. It is sectional drawing (the 6) of the antenna device.
  • FIG. 3 is a perspective view of the inside of the antenna device from the X-axis direction. It is the figure (4) which saw through the inside of the antenna device from the X-axis direction.
  • FIG. 5 is a perspective view of the inside of the antenna device from the X-axis direction (No. 5).
  • FIG. 1 is a block diagram of an example of a communication device 10 to which the antenna device 120 according to the present embodiment is applied.
  • the communication device 10 is, for example, a mobile terminal such as a mobile phone, a smartphone or a tablet, a personal computer having a communication function, or the like.
  • the communication device 10 includes an antenna module 100 and a BBIC 200 constituting a baseband signal processing circuit.
  • the antenna module 100 includes an RFIC 110, which is an example of a power feeding circuit, and an antenna device 120.
  • the communication device 10 up-converts the signal transmitted from the BBIC 200 to the antenna module 100 into a high-frequency signal and radiates it from the antenna device 120, and down-converts the high-frequency signal received by the antenna device 120 to process the signal at the BBIC 200. To do.
  • the antenna device 120 includes a plurality of antenna units 125.
  • a plurality of antenna units 125 are arranged in a straight line at predetermined intervals.
  • Each of the antenna units 125 includes a first radiation plate 121 and a second radiation plate 122.
  • the first radiation plate 121 and the second radiation plate 122 are both one-sided short-circuit type patch antennas having a flat plate shape.
  • the antenna device 120 is configured to be capable of radiating radio waves in different frequency bands from the first radiation plate 121 and the second radiation plate 122 of the antenna unit 125. That is, the antenna device 120 is a dual band type antenna device.
  • the first radiation plate 121 is configured to be capable of radiating a high frequency signal in the band of the first frequency f1.
  • the second radiation plate 122 is configured to be capable of radiating a high frequency signal in the band of the second frequency f2 lower than the first frequency f1.
  • the first frequency f1 and the second frequency f2 are not particularly limited, but may be set to, for example, 60 GHz and 28 GHz, respectively.
  • FIG. 1 for the sake of simplicity, only the configurations corresponding to the four antenna units 125 among the plurality of antenna units 125 constituting the antenna device 120 are shown, and the other antenna units 125 having the same configuration are shown. The corresponding configuration is omitted.
  • the RFIC 110 includes switches 111A to 111H, 113A to 113H, 117A, 117B, power amplifiers 112AT to 112HT, low noise amplifiers 112AR to 112HR, attenuators 114A to 114H, phase shifters 115A to 115H, and signal synthesis / minute. It includes wave devices 116A and 116B, mixers 118A and 118B, and amplifier circuits 119A and 119B.
  • the configuration of the amplifier circuit 119A is a circuit for a high frequency signal of the first frequency band radiated from the first radiation plate 121.
  • the configuration of the amplifier circuit 119B is a circuit for a high frequency signal in the second frequency band radiated from the second radiation plate 122.
  • the switches 111A to 111H and 113A to 113H are switched to the power amplifiers 112AT to 112HT side, and the switches 117A and 117B are connected to the transmitting side amplifiers of the amplifier circuits 119A and 119B.
  • the switches 111A to 111H and 113A to 113H are switched to the low noise amplifiers 112AR to 112HR, and the switches 117A and 117B are connected to the receiving side amplifiers of the amplifier circuits 119A and 119B.
  • the signal transmitted from the BBIC 200 is amplified by the amplifier circuits 119A and 119B, and up-converted by the mixers 118A and 118B.
  • the transmitted signal which is an up-converted high-frequency signal, is demultiplexed by the signal synthesizer / demultiplexers 116A and 116B, passes through the corresponding signal paths, and reaches different first radiation plates 121 and second radiation plates 122, respectively.
  • the directivity of the antenna device 120 can be adjusted by individually adjusting the degree of phase shift of the phase shifters 115A to 115H arranged in each signal path.
  • the received signal which is a high-frequency signal received by the first radiation plate 121 and the second radiation plate 122, is transmitted to the RFIC 110 and combined in the signal synthesizer / demultiplexers 116A and 116B via four different signal paths.
  • the combined received signal is down-converted by the mixers 118A and 118B, amplified by the amplifier circuits 119A and 119B, and transmitted to the BBIC 200.
  • the RFIC 110 is formed as, for example, a one-chip integrated circuit component including the above circuit configuration.
  • the devices switch, power amplifier, low noise amplifier, attenuator, phase shifter
  • corresponding to each antenna unit 125 in the RFIC 110 may be formed as an integrated circuit component of one chip for each corresponding antenna unit 125. ..
  • FIG. 2 is a perspective view of the inside of the communication device 10.
  • the communication device 10 is covered with a housing 11. Inside the housing 11, an antenna device 120 and a mounting board 20 on which the antenna device 120 is mounted are provided.
  • the antenna device 120 is arranged adjacent to the side surface 22 of the mounting board 20 instead of the main surface 21 of the mounting board 20.
  • FIG. 3 is a side view of the inside of the communication device 10 viewed from the direction along the main surface 21 and the side surface 22 of the mounting board 20.
  • the antenna device 120 is arranged adjacent to the side surface 22 of the mounting board 20.
  • the antenna device 120 and the mounting board 20 are connected by a connecting line 160.
  • the antenna device 120 is formed of a dielectric 130 having an inner surface 131 and an outer surface 132.
  • the dielectric 130 is formed by laminating a plurality of dielectric layers in the laminating direction with the direction from the inner surface 131 to the outer surface 132 as the laminating direction.
  • the dielectric 130 is formed of, for example, a resin such as epoxy or polyimide.
  • the dielectric 130 may be formed by using a liquid crystal polymer (LCP) or a fluororesin having a lower dielectric constant.
  • LCP liquid crystal polymer
  • the RFIC 110 is mounted on the inner surface 131 of the dielectric 130.
  • ground plate GND1 and GND2 extending in the direction along the inner surface 131 are provided.
  • the normal direction of the ground plate GND1 is the "X-axis direction”
  • the extending direction of the ground plate GND1 along the length direction of the antenna device 120 is the "Y-axis direction”
  • the X-axis direction and the Y-axis are provided.
  • the direction perpendicular to the direction is also referred to as "Z-axis direction”.
  • the thickness (length in the Z-axis direction) T of the housing 11 of the communication device 10 is considerably shorter than the length in the X-axis direction and the length in the Y-axis direction of the housing 11.
  • the length of the antenna device 120 in the Z-axis direction is restricted by the thin thickness T of the housing 11.
  • the antenna device 120 according to the present embodiment is devised to reduce the length in the Z-axis direction.
  • FIG. 4 is a perspective view of the inside of the antenna device 120 from the X-axis direction.
  • a plurality of antenna units 125 are arranged side by side along the Y-axis direction parallel to the extending direction of the ground plate.
  • the first radiation plate 121 and the second radiation plate 122 in each antenna unit 125 have portions that overlap each other.
  • FIG. 5 is a perspective view of the inside of the antenna device 120.
  • FIG. 6 is a VI-VI cross-sectional view of the antenna device 120 in FIG. The configuration of the antenna device 120 will be further described with reference to FIGS. 5 and 6.
  • the positive direction of the X-axis may be described as "up” and the positive direction of the X-axis may be described as "down”.
  • the antenna device 120 includes two flat plate-shaped grounding plates GND1 and GND2, an antenna unit 125, a first feeder line 141, a second feeder line 142, a plurality of first grounding vias 151, and a plurality of second feeding lines. It is provided with a grounding via 152.
  • the ground plates GND1 and GND2 are arranged in the lower layer of the dielectric 130, and are configured to extend in the Y-axis direction and the Z-axis direction over the entire lower layer.
  • the ground plates GND1 and GND2 are arranged side by side in the X-axis direction with a predetermined distance from each other.
  • Both the first radiation plate 121 and the second radiation plate 122 included in the antenna unit 125 are arranged so as to face the ground plate GND1.
  • the first radiation plate 121 is arranged in a layer above the second radiation plate 122 (a position away from the ground plate GND1).
  • the end portion 121a of the first radiation plate 121 on the negative direction side of the Z axis is connected to the ground plate GND1 by a plurality of first ground vias 151.
  • FIG. 5 shows an example in which the entire end portion 121a is connected to the grounding plate GND1, a part of the end portion 121a may be connected to the grounding plate GND1.
  • the end portion 121a of the first radiation plate 121 connected to the ground plate GND1 by the first grounding via 151 is also referred to as “the grounding end portion 121a of the first radiation plate 121”.
  • the end portion 122a of the second radiation plate 122 on the negative direction side of the Z axis is connected to the ground plate GND1 by a plurality of second ground vias 152.
  • FIG. 5 shows an example in which the entire end portion 122a is connected to the grounding plate GND1, a part of the end portion 122a may be connected to the grounding plate GND1.
  • the end portion 122a of the second radiation plate 122 connected to the ground plate GND1 by the second grounding via 152 is also referred to as “the grounding end portion 122a of the second radiation plate 122”.
  • the ground contact end 121a of the first radiation plate 121 and the ground contact end 122a of the second radiation plate 122 are aligned in the Z-axis direction.
  • the antenna device 120 is seen through from the X-axis direction (normal direction of the grounding plate GND1), the grounding end portion 121a of the first radiation plate 121 and the grounding end portion 122a of the second radiation plate 122 overlap each other. Has a part.
  • the first grounding via 151 is also connected to the grounding end 122a of the second radiation plate 122. Therefore, the first grounded via 151 and the second grounded via 152 have a portion shared with each other. That is, a part of the first grounding via 151 (the part from the grounding plate GND1 to the grounding end portion 122a of the second radiation plate 122) also functions as a part of the second grounding via 152. Further, the grounding end portion 121a of the first radiation plate 121 and the grounding end portion 122a of the second radiation plate 122 are the remaining part of the first grounding via 151 (the second from the grounding end portion 122a of the first radiation plate 121). A portion of the radiation plate 122 up to the grounding end 121a) is linearly connected in the X-axis direction.
  • the lower end of the first feeder line 141 is connected to the RFIC 110.
  • the upper end of the first feeder line 141 is connected to the feeder point SP1 of the first radiation plate 121.
  • the second radiation plate 122 and the ground plates GND1 and GND2 arranged between the first radiation plate 121 and the RFIC 110 have through holes for avoiding contact with the first feed line 141, and the first feeder line 141 is arranged to pass through these through holes.
  • a high frequency signal in the first frequency f1 (for example, 60 GHz) band is transmitted from the first radiation plate 121. Be radiated. Since the feeding point SP1 of the first radiation plate 121 is arranged at a position in the positive direction of the Z axis with respect to the ground contact end portion 121a, polarization from the first radiation plate 121 with the Z axis direction as the excitation direction. Is radiated in a direction inclined toward the positive direction of the Z axis from the positive direction of the X axis (the normal direction of the first radiation plate 121).
  • the second feeder line 142 is provided separately from the first feeder line 141.
  • the lower end of the second feeder 142 is connected to the RFIC 110.
  • the upper end of the second feeder line 142 is connected to the feeder point SP2 of the second radiation plate 122.
  • the ground plates GND1 and GND2 arranged between the second radiation plate 122 and the RFIC 110 have through holes for avoiding contact with the second feeder line 142, and the second feeder line 142 has these through holes. Arranged to pass through.
  • a high frequency signal in the second frequency f2 (for example, 28 GHz) band is transmitted from the second radiation plate 122. Be radiated. Since the feeding point SP2 of the second radiation plate 122 is arranged in the positive direction of the Z axis with respect to the ground contact end portion 122a, polarization with the Z axis direction as the excitation direction is generated from the second radiation plate 122. The radiation is emitted in a direction inclined toward the positive direction of the Z axis from the positive direction of the X axis (normal direction of the second radiation plate 122).
  • the length of the radiation plate of a normal patch antenna is about half of the wavelength, but the length of the radiation plate of a one-sided short-circuit type patch antenna is about one-fourth of the wavelength. Therefore, the length L1 of the first radiation plate 121 in the Z-axis direction is set to about one-fourth of the wavelength of the signal of the first frequency f1 (60 GHz). The length L2 of the second radiation plate 122 in the Z-axis direction is set to about one-fourth of the wavelength of the signal of the second frequency f2 (28 GHz). Therefore, the length L1 of the first radiation plate 121 in the Z-axis direction is shorter than the length L2 of the second radiation plate 122 in the Z-axis direction.
  • the antenna device 120 when the antenna device 120 is seen through from the X-axis direction (normal direction of the ground plate GND1), the first radiation plate 121 and the second radiation plate 122 Have parts that overlap each other.
  • the size of the antenna unit 125 in the Z-axis direction can be reduced as compared with the case where the first radiation plate 121 and the second radiation plate 122 are arranged side by side in the Z-axis direction without overlapping. ..
  • the antenna unit 125, the first radiation plate 121, the second radiation plate 122, and the ground plate GND1 are the "antenna unit", the "first radiation plate", the "second radiation plate", and the "ground plate” of the present disclosure. Can correspond to each.
  • the first radiation plate 121 is not a normal patch antenna that is not connected to the ground plate GND1, but a one-side short-circuit type patch antenna in which the ground end 121a on one side is connected to the ground plate GND1.
  • the second radiation plate 122 is not a normal patch antenna not connected to the ground plate GND1, but a one-side short-circuit type patch antenna in which the ground end 122a on one side is connected to the ground plate GND1. Therefore, in the antenna device 120 according to the present embodiment, the length L1 of the first radiation plate 121 in the Z-axis direction and the length of the second radiation plate 122 in the Z-axis direction are longer than in the case of using a normal patch antenna.
  • Each of the L2 can be halved, and the size of the antenna device 120 in the Z-axis direction can be further reduced.
  • the grounding end portion 121a and the grounding end portion 122a may correspond to the "first grounding end portion" and the "second grounding end portion" of the present disclosure, respectively.
  • first feeder line 141 connected to the feed point SP1 of the first radiation plate 121 and a second feeder line 142 connected to the feed point SP2 of the second radiation plate 122 are separately provided.
  • the length of the first feeder line 141 and the length of the second feeder line 142 can be adjusted individually, so that the impedance can be easily adjusted and the radiation characteristics can be easily improved.
  • the first feeder line 141 and the second feeder line 142 can correspond to the "first feeder line” and the "second feeder line” of the present disclosure, respectively.
  • the dual band type antenna device 120 which can be miniaturized and whose radiation characteristics can be easily improved is realized.
  • the grounding end portion 121a of the first radiation plate 121 and the grounding end portion 122a of the second radiation plate 122 are aligned in the Z-axis direction.
  • the grounding end portion 121a of the first radiation plate 121 and the grounding end portion 122a of the second radiation plate 122 have a portion that overlaps with each other. Therefore, for example, the size of the antenna device 120 in the Z-axis direction is larger than that in the case where the grounding end portion 121a of the first radiation plate 121 is deviated from the grounding end portion 122a of the second radiation plate 122 in the negative direction of the Z-axis. It can be made smaller.
  • the first grounded via 151 and the second grounded via 152 have a portion shared with each other. That is, a part of the first grounding via 151 (the part from the grounding plate GND1 to the grounding end portion 122a of the second radiation plate 122) also functions as a part of the second grounding via 152. Therefore, the configurations of the first grounded via 151 and the second grounded via 152 can be simplified as compared with the case where the first grounded via 151 and the second grounded via 152 do not have a portion shared with each other.
  • the first grounding via 151 and the second grounding via 152 can correspond to the "first grounding wire" and the "second grounding wire" of the present disclosure, respectively.
  • the grounding end portion 121a of the first radiation plate 121 and the grounding end portion 122a of the second radiation plate 122 are the remaining part of the first grounding via 151 (the first). It is linearly connected in the X-axis direction by a portion) from the grounding end portion 122a of the 1 radiation plate 121 to the grounding end portion 121a of the second radiation plate 122. Therefore, the length of the first grounding via 151 can be shortened.
  • a plurality of antenna units 125 are arranged side by side along the Y-axis direction parallel to the extending direction of the ground plate GND1. As a result, a dual band type array antenna is realized.
  • the dielectric 130 is formed of one substrate, and the grounding ends 121a and 122a and the grounding plates GND1 and GND2 are provided on one substrate.
  • the dielectric 130 may be formed of a plurality of substrates arranged at predetermined intervals in the X-axis direction, and the grounding ends 121a and 122a and the grounding plates GND1 and GND2 may be provided on separate substrates.
  • FIG. 7 is a cross-sectional view of the antenna device 120H according to the first modification.
  • the antenna device 120H is obtained by changing the dielectric 130 of the antenna device 120 described above to the dielectric 130H.
  • the dielectric 130H includes a first substrate 130a and a second substrate 130b arranged at predetermined intervals in the X-axis direction.
  • the first substrate 130a and the second substrate 130b are connected by solder bumps 160 or adhesion.
  • the grounding end portion 121a of the first radiation plate 121 and the grounding end portion 122a of the second radiation plate 122 are provided on the first substrate 130a, and the grounding plates GND1 and GND2 are provided on the second substrate 130b.
  • the grounding ends 121a and 122a are connected to the grounding plate GND1 by solder bumps 160 or adhesion.
  • Such an antenna device 120H may be used.
  • the first substrate 130a on which the first radiation plate 121 and the second radiation plate 122 are formed may be formed of a part of a housing (for example, a resin housing covering the communication device 10). Further, the solder bump 160 may be an electrical contact portion such as a pogo pin.
  • the grounding end portion 121a of the first radiation plate 121 and the grounding end portion 122a of the second radiation plate 122 are aligned in the Z-axis direction.
  • the ground contact end portion 121a of the first radiation plate 121 and the ground contact end portion 122a of the second radiation plate 122 may be displaced in the Z-axis direction.
  • FIG. 8 is a cross-sectional view of the antenna device 120A according to the second modification.
  • the antenna device 120A is obtained by changing the antenna unit 125 and the first grounded via 151 of the above-mentioned antenna device 120 to the antenna unit 125A and the first grounded via 151A, respectively.
  • the antenna unit 125A is different from the above-mentioned antenna unit 125 in that the grounding end 121a of the first radiation plate 121 is displaced in the negative direction of the Z axis from the grounding end 122a of the second radiation plate 122. Other points of the antenna unit 125A are the same as those of the antenna unit 125 described above.
  • the portion from the grounding end portion 122a of the second radiation plate 122 to the grounding end portion 121a of the first radiation plate 121 is in the negative direction of the Z axis with respect to the above-mentioned first grounding via 151. The difference is that they are out of alignment.
  • Other points of the first grounded via 151A are the same as those of the first grounded via 151 described above.
  • the ground contact end portion 121a of the first radiation plate 121 and the ground contact end portion 122a of the second radiation plate 122 may be displaced in the Z-axis direction.
  • FIG. 9 is a cross-sectional view of another antenna device 120B according to the second modification.
  • the antenna device 120B is obtained by changing the antenna unit 125, the first ground via 151, and the second ground via 152 of the above-mentioned antenna device 120 to the antenna unit 125B, the first ground via 151B, and the second ground via 152B, respectively. .. Since other structures are the same as those of the antenna device 120 described above, the detailed description here will not be repeated.
  • the antenna unit 125B is different from the above-mentioned antenna unit 125 in that the grounding end 121a of the first radiation plate 121 is displaced in the negative direction of the Z axis from the grounding end 122a of the second radiation plate 122. Other points of the antenna unit 125B are the same as those of the antenna unit 125 described above.
  • the first grounding via 151B is not connected to the grounding end 122a of the second radiation plate 122. That is, the first grounded via 151B and the second grounded via 152B are provided separately and do not have a portion shared with each other.
  • the grounding end portion 121a of the first radiation plate 121 and the grounding end portion 122a of the second radiation plate 122 are displaced in the Z-axis direction, and the first grounding via 151B and the second grounding via 152B are separate. It may be provided in.
  • first grounding via 151B and the second grounding via 152B may be provided on different sides of the surface centers of the radiation plates 121 and 122.
  • FIG. 10 is a cross-sectional view of the antenna device 120I according to the third modification.
  • the antenna device 120I is a device in which the second grounding via 152B of the above-mentioned antenna device 120B is moved to the right side (Z-axis positive direction side) of the surface center of the second radiation plate 122.
  • the first grounding via 151B is provided on the left side (Z-axis negative direction side) of the surface center of the first radiation plate 121
  • the second grounding via 152B is the surface of the second radiation plate 122. It is provided on the right side (Z-axis positive direction side) of the center.
  • FIG. 11 is a cross-sectional view of the antenna device 120C according to the present modification 4.
  • the antenna unit 125 of the above-mentioned antenna device 120 is changed to the antenna unit 125C.
  • the antenna unit 125C includes a radiation plate 123 in addition to the first radiation plate 121 and the second radiation plate 122. That is, in the antenna unit 125C, a radiation plate 123 is added to the above-mentioned antenna unit 125.
  • the antenna unit 125C and the radiation plate 123 can correspond to the “antenna unit” and the “fifth radiation plate” of the present disclosure, respectively.
  • the radiation plate 123 is arranged between the first radiation plate 121 and the second radiation plate 122.
  • the feeding point SP3 of the radiation plate 123 is connected to the RFIC 110 via the third feeding line 143.
  • the grounding end portion (end on the negative direction side of the Z axis) 123a of the radiation plate 123 is connected to the grounding plate GND1 via the third grounding via 153C.
  • the radiation plate 123 is a one-sided short-circuit type patch antenna (plate-shaped inverted F antenna) like the first radiation plate 121 and the second radiation plate 122.
  • the first radiation plate 121, the second radiation plate 122, and the radiation plate 123 have portions that overlap each other.
  • the grounding end 121a of the first radiation plate 121, the grounding end 122a of the second radiation plate 122, and the grounding end 123a of the radiation plate 123 are aligned in the Z-axis direction.
  • the grounding end portion 121a of the first radiation plate 121 is connected to the grounding plate GND1 via the first grounding via 151C.
  • the grounding end portion 122a of the second radiation plate 122 is connected to the grounding plate GND1 via the second grounding via 152C.
  • the first grounding via 151C is also connected to the grounding end 122a of the second radiation plate 122 and the grounding end 123a of the radiation plate 123.
  • the third grounding via 153C is also connected to the grounding end 122a of the second radiation plate 122. Therefore, the first grounded via 151C, the second grounded via 152C, and the third grounded via 153C have a portion shared with each other.
  • the radiation plate 123 By supplying the signal from the RFIC 110 to the feeding point SP3 of the radiation plate 123 through the third feed line 143, the radiation plate 123 has a first frequency f1 (for example, 60 GHz) band and a second frequency f2 (for example, 28 GHz). A high frequency signal in the third frequency f3 (for example, 39 GHz) band between the band and the band is emitted.
  • f1 for example, 60 GHz
  • f2 for example, 28 GHz
  • the length L3 of the radiation plate 123 in the Z-axis direction is set to about one-fourth of the wavelength of the high-frequency signal of the third frequency f3 (for example, 39 GHz). Therefore, the length L3 of the radiation plate 123 in the Z-axis direction is longer than the length L1 of the first radiation plate 121 in the Z-axis direction and shorter than the length L2 of the second radiation plate 122 in the Z-axis direction.
  • the triple band type antenna device 120C in which three one-sided short-circuit type patch antennas radiating different frequencies may be stacked may be used.
  • an antenna different from the antenna unit 125 may be arranged between the plurality of antenna units 125.
  • FIG. 12 is a perspective view of the inside of the antenna device 120D according to the present modification 5 from the X-axis direction.
  • a plurality of antenna units 125 are arranged side by side along the Y-axis direction parallel to the extending direction of the ground plate GND1. Further, an antenna unit 125D different from the antenna unit 125 is arranged between the plurality of antenna units 125.
  • Each of the antenna units 125 includes a first radiation plate 121 and a radiation plate 123, and is configured to emit high frequency signals in the first frequency f1 (for example, 60 GHz) band and the second frequency f2 (for example, 28 GHz) band.
  • first frequency f1 for example, 60 GHz
  • second frequency f2 for example, 28 GHz
  • each of the antenna units 125D includes the first radiation plate 121 and the radiation plate 123, and emits high frequency signals of the first frequency f1 (for example, 60 GHz) band and the third frequency f3 (for example, 39 GHz) band. It is composed.
  • the antenna unit 125D is obtained by removing the second radiation plate 122 and the second feeder line 142 from the above-mentioned antenna unit 125C.
  • the first radiation plate 121 and the radiation plate 123 in the antenna unit 125D can correspond to the "third radiation plate” and the "fourth radiation plate” of the present disclosure, respectively.
  • the grounding ends of the first radiation plate 121 and the second radiation plate 122 of the antenna unit 125, and the grounding ends of the first radiation plate 121 and the radiation plate 123 of the antenna unit 125D are arranged so as to be aligned in the Z-axis direction. Radiation.
  • the dual band type antenna unit 125 that can correspond to the first frequency f1 and the second frequency f2, and the dual band type antenna unit 125D that can correspond to the first frequency f1 and the third frequency f3. May be arranged alternately in the Y-axis direction. This makes it possible to form a triple band type array antenna that can handle the first frequency f1, the second frequency f2, and the third frequency f3.
  • the first radiation plate 121 that emits the signal of the highest first frequency f1 among the first frequency f1, the second frequency f2, and the third frequency f3 is the antenna unit 125 and the antenna unit 125D. Included in both. Therefore, the arrangement interval of the first radiation plate 121 corresponding to the highest first frequency f1 can be made smaller than the arrangement interval of the other second radiation plate 122 and the radiation plate 123. As a result, the sidelobe level when the signal of the first frequency f1 is radiated can be reduced.
  • the distance between the surface centers of adjacent antennas is about half of the wavelength, and the distance between the surface centers is larger than one half of the wavelength.
  • the side lobe level will deteriorate.
  • the antenna device 120D by including the first radiation plate 121 that emits the signal of the first frequency f1 having the shortest wavelength in both the antenna unit 125 and the antenna unit 125D, the first radiation plate 121 The placement interval is reduced. As a result, the sidelobe level when the signal of the first frequency f1 is radiated can be reduced.
  • FIG. 13 is a perspective view of the inside of the other antenna device 120E according to the present modification 5 from the X-axis direction.
  • a plurality of antenna units 125C are arranged side by side along the Y-axis direction parallel to the extending direction of the ground plate GND1. Further, an antenna 125E different from the antenna unit 125C is arranged between the plurality of antenna units 125C.
  • each of the antenna units 125C includes a first radiation plate 121, a second radiation plate 122, and a radiation plate 123, and has a first frequency f1, a second frequency f2, and a third frequency f3. It is a compatible triple band type antenna.
  • a first radiation plate 121 that emits a high frequency signal in the first frequency f1 band is arranged in each of the antennas 125E.
  • the antenna 125E is obtained by removing the second radiation plate 122 and the second feeder line 142 from the above-mentioned antenna unit 125.
  • the first radiation plate 121 in the antenna 125E can correspond to the "third radiation plate" of the present disclosure.
  • the ground ends of the first radiation plate 121, the second radiation plate 122, and the radiation plate 123 of the antenna unit 125C, and the ground ends of the first radiation plate 121 of the antenna 125E are arranged so as to be aligned in the Z-axis direction. ..
  • the triple band type antenna unit 125C corresponding to the first frequency f1, the second frequency f2 and the third frequency f3, and the single band type antenna 125E corresponding to the first frequency f1 are Y. It may be arranged alternately in the axial direction. This makes it possible to form a triple band type array antenna that can handle the first frequency f1, the second frequency f2, and the third frequency f3.
  • the first radiation plate 121 that emits the signal of the highest first frequency f1 among the first frequency f1, the second frequency f2, and the third frequency f3. Is included in both the antenna unit 125C and the antenna 125E.
  • the arrangement interval of the first radiation plate 121 that emits the signal of the first frequency f1 having the shortest wavelength can be shortened. Therefore, the sidelobe level when the signal of the first frequency f1 is radiated can be reduced.
  • FIG. 14 is a perspective view of the inside of the antenna device 120F according to the present modification 6 from the X-axis direction.
  • the antenna device 120F is obtained by adding a plurality of antenna units 128 and 128D to the above-mentioned antenna device 120E. Since other structures are the same as those of the antenna device 120E described above, the detailed description here will not be repeated.
  • the antenna unit 128 and the antenna unit 128D are arranged alternately in the Y-axis direction and adjacent to the antenna units 125 and 125D on the negative direction side of the Z-axis.
  • the antenna units 128 and 128D can correspond to the "radiating electrode" of the present disclosure.
  • the antenna unit 128 is a dual band type antenna that can support the first frequency f1 and the second frequency f2. Specifically, the antenna unit 128 includes a radiation plate 126 that emits a high frequency signal in the first frequency f1 band and a radiation plate 127 that emits a high frequency signal in the second frequency f2 band. Both the radiation plates 126 and 127 are ordinary patch antennas that are arranged to face the ground plate GND1 and are not connected to the ground plate GND1. In other words, the antenna unit 128 is a modification of the above-mentioned antenna unit 125, which is a one-sided short-circuit type patch antenna, into a normal patch antenna unit.
  • the antenna unit 128D is a dual band type antenna that can support the first frequency f1 and the third frequency f3.
  • the antenna unit 128D includes a radiation plate 126 that emits a high frequency signal in the first frequency f1 band and a radiation plate 129 that emits a high frequency signal in the third frequency f3 band.
  • Both the radiation plates 126 and 129 are ordinary patch antennas that are arranged to face the ground plate GND1 and are not connected to the ground plate GND1.
  • the antenna unit 128D is a modification of the above-mentioned antenna unit 125D, which is a one-sided short-circuit type patch antenna, into a normal patch antenna unit.
  • the antenna units 128 and 128D which are normal patch antenna units
  • the antenna units 125 and 125D which are single-sided short-circuit type patch antenna units
  • the signal strength can be increased.
  • the grounding ends of the radiation plates included in the antenna units 125 and 125D, which are short-circuit type patch antennas on one side are all arranged on the side where the antenna units 128 and 128D are provided, that is, on the negative direction side of the Z axis. Has been done.
  • strong signals are emitted from the antenna units 125 and 125D in a direction inclined toward the positive direction of the Z axis rather than the positive direction of the X axis.
  • strong signals are emitted from the antenna units 128 and 128D, which are ordinary patch antennas, in the positive direction of the X-axis. This makes it possible to radiate strong radio waves over a wider range.
  • FIG. 15 is a perspective view of the inside of the other antenna device 120G according to the present modification 6 from the X-axis direction.
  • the antenna device 120G is obtained by adding the antenna units 125 and 125D to the above-mentioned antenna device 120F on the negative direction side of the Z axis of the antenna units 128 and 128D. Since the other structures are the same as those of the antenna device 120F described above, the detailed description here will not be repeated.
  • the antenna units 125 and 125D are provided on both the positive direction side and the negative direction side of the Z axis of the antenna units 128 and 128D with the antenna units 128 and 128D interposed therebetween. ..
  • the antenna units 125 and 125D provided on the positive direction side of the Z axis of the antenna units 128 and 128D can correspond to the "first antenna unit” of the present disclosure.
  • the antenna units 125 and 125D provided on the negative side of the Z axis of the antenna units 128 and 128D can correspond to the "second antenna unit" of the present disclosure.
  • the grounding end of the radiation plate included in the antenna units 125 and 125D provided on the positive direction side of the Z axis of the antenna units 128 and 128D is arranged on the side where the antenna units 128 and 128D are provided (negative direction side of the Z axis). Has been done.
  • the grounding end of the radiation plate included in the antenna units 125 and 125D provided on the negative side of the Z axis of the antenna units 128 and 128D is also the side on which the antenna units 128 and 128D are provided (the positive side of the Z axis). It is located in.
  • the antenna units 125 and 125D which are short-circuited one-sided patch antennas, on both sides of the antenna units 128 and 128D, which are normal patch antennas, it is possible to radiate strong radio waves over a wider range.
  • a normal patch antenna is added in addition to the one-sided short-circuit type patch antenna
  • the added antenna is not limited to the normal patch antenna.
  • a dipole antenna may be added in place of or in addition to the normal patch antenna.
  • 10 communication device 11 housing, 20 mounting board, 21 main surface, 22 side surface, 100 antenna module, 111A to 111H, 113A to 113H, 117A, 117B switch, 112AR to 112HR low noise amplifier, 112AT to 112HT power amplifier, 114A, 114D, 114E, 114H attenuator, 115A, 115D, 115E, 115H phase shifter, 116A, 116B demultiplexer, 118A, 118B mixer, 119A, 119B amplification circuit, 120, 120A to 120I antenna device, 121 first radiation plate , 121a, 122a, 123a Grounding end, 122 second radiator plate, 123,126,127,129 radiator plate, 125,125A to 125D, 128,128D antenna unit, 125E antenna, 130,130H dielectric, 131 inner surface , 132 outer surface, 141 1st feed line, 142 2nd feed line, 143 3rd feed line,

Abstract

An antenna device (120) is provided with: a flat-plate-shaped ground plate (GND1); an antenna unit having flat-plate-shaped first radiation plate (121) and second radiation plate (122) that face the ground plate (GND1); a first power supply line (141) connected to a power supply point (SP1) of the first radiation plate (121); and a second power supply line (142) that is provided separately from the first power supply line (141) and that is connected to a power supply point (SP2) of the second radiation plate (122). The first radiation plate (121) has a ground end section (121a) connected to the ground plate (GND1). The second radiation plate (122) has a ground end section (122a) connected to the ground plate (GND1). When the antenna device (120) is viewed in the normal direction of the ground plate (GND1), the first radiation plate (121) and the second radiation plate (122) have portions that overlap each other.

Description

アンテナ装置、アンテナモジュールおよび通信装置Antenna device, antenna module and communication device
　本開示は、マルチバンド型のアンテナ装置、アンテナモジュールおよび通信装置に関する。 The present disclosure relates to a multi-band antenna device, an antenna module, and a communication device.
　複数の周波数帯域での通信に対応可能なマルチバンド型の通信装置に適用可能なアンテナ装置が、たとえば特開２００３－２８３２４０号公報（特許文献１）に開示されている。 An antenna device applicable to a multi-band type communication device capable of supporting communication in a plurality of frequency bands is disclosed, for example, in Japanese Patent Application Laid-Open No. 2003-283240 (Patent Document 1).
　特開２００３－２８３２４０号公報に開示されたアンテナ装置は、多層基板と、多層基板の下層に配置される平板状の接地板（接地電極）と、各々が互いに異なる周波数の高周波信号を放射する３つの平板状の放射板（放射素子）と、３つの放射板のうちの最も上層に配置される放射板の給電点に接続され、３つの放射板に共用される１本の給電線とを備える。３つの放射板は、接地板の法線方向からアンテナ装置を透視したときに互いに重なり合うように積層される。これにより、アンテナ装置の長さ方向（接地板の延在方向）の小型化が図られている。 The antenna device disclosed in Japanese Patent Application Laid-Open No. 2003-283240 emits high-frequency signals having different frequencies from a multilayer substrate and a flat plate-shaped grounding plate (grounding electrode) arranged under the multilayer substrate3. It is provided with one flat radiation plate (radiating element) and one feeding line connected to the feeding point of the radiation plate arranged at the uppermost layer of the three radiation plates and shared by the three radiation plates. .. The three radiation plates are laminated so as to overlap each other when the antenna device is viewed through from the normal direction of the ground plate. As a result, the length direction of the antenna device (extending direction of the ground plate) is reduced.
特開２００３－２８３２４０号公報JP-A-2003-283240
　特開２００３－２８３２４０号公報に開示された３つの放射板は、いずれも接地板には接続されない、いわゆる通常のパッチアンテナである。一般的に、通常のパッチアンテナにおいては、放射板の長さをアンテナが放射する波長の２分の１未満にすると放射特性が劣化してしまう。そのため、放射板の長さを波長の２分の１未満にすることは難しく、アンテナ装置の更なる小型化は難しい。 The three radiation plates disclosed in Japanese Patent Application Laid-Open No. 2003-283240 are so-called ordinary patch antennas that are not connected to the ground plate. Generally, in a normal patch antenna, if the length of the radiation plate is set to less than half of the wavelength emitted by the antenna, the radiation characteristics deteriorate. Therefore, it is difficult to reduce the length of the radiation plate to less than half of the wavelength, and it is difficult to further reduce the size of the antenna device.
　さらに、特開２００３－２８３２４０号公報に開示された３つの放射板は、１本の給電線を共用しているため、給電線の長さを放射板毎に別々に調整することができない。そのため、インピーダンス調整を容易に行なうことができず、放射特性を改善し難い。 Further, since the three radiation plates disclosed in Japanese Patent Application Laid-Open No. 2003-283240 share one power supply line, the length of the power supply line cannot be adjusted separately for each radiation plate. Therefore, impedance adjustment cannot be easily performed, and it is difficult to improve the radiation characteristics.
　本開示は、このような課題を解決するためになされたものであって、その目的は、小型化が可能で、かつ放射特性を改善し易い、マルチバンド型のアンテナ装置を提供することである。 The present disclosure has been made to solve such a problem, and an object of the present invention is to provide a multi-band type antenna device which can be miniaturized and whose radiation characteristics can be easily improved. ..
　本開示によるアンテナ装置は、平板状の接地板と、接地板と対向する平板状の第１放射板と接地板と対向する平板状の第２放射板とを有するアンテナユニットと、第１放射板の給電点に接続される第１給電線と、第１給電線とは別に設けられ、第２放射板の給電点に接続される第２給電線とを備える。第１放射板は、接地板に接続される第１接地端部を有する。第２放射板は、接地板に接続される第２接地端部を有する。接地板の法線方向からアンテナ装置を透視したとき、第１放射板と第２放射板とは互いに重なり合う部分を有する。 The antenna device according to the present disclosure includes an antenna unit having a flat plate-shaped ground plate, a flat plate-shaped first radiation plate facing the ground plate, and a flat plate-shaped second radiation plate facing the ground plate, and a first radiation plate. It is provided with a first feeder line connected to the feeding point of the above and a second feeding line provided separately from the first feeding line and connected to the feeding point of the second radiation plate. The first radiation plate has a first grounding end that is connected to the grounding plate. The second radiation plate has a second grounding end that is connected to the grounding plate. When the antenna device is viewed through from the normal direction of the ground plate, the first radiation plate and the second radiation plate have portions that overlap each other.
　上記のアンテナ装置においては、接地板の法線方向からアンテナ装置を透視したとき、第１放射板と第２放射板とは互いに重なり合う部分を有する。これにより、アンテナ装置の長さ方向（接地板の延在方向）の小型化が可能になる。 In the above antenna device, when the antenna device is viewed from the normal direction of the ground plate, the first radiation plate and the second radiation plate have a portion that overlaps with each other. This makes it possible to reduce the size of the antenna device in the length direction (extending direction of the ground plate).
　さらに、上記のアンテナ装置においては、第１放射板および第２放射板が、接地板に接続される第１接地端部および第２接地端部をそれぞれ有する。すなわち、第１放射板および第２放射板は、接地板に接続されない通常のパッチアンテナではなく、片側の端部が接地板に接続された片側短絡型パッチアンテナ（板状の逆Ｆアンテナ）である。一般的に、片側短絡型パッチアンテナにおいては、放射板の長さを、放射板が放射する波長の４分の１程度にすることで良好な放射特性が得られる。そのため、通常のパッチアンテナを用いる場合に比べて、各放射板の長さを約半分にすることができ、アンテナ装置をより小型化することが可能となる。 Further, in the above antenna device, the first radiation plate and the second radiation plate have a first grounding end and a second grounding end connected to the grounding plate, respectively. That is, the first radiation plate and the second radiation plate are not a normal patch antenna that is not connected to the ground plate, but a one-sided short-circuit type patch antenna (plate-shaped inverted F antenna) in which one end is connected to the ground plate. is there. Generally, in a one-sided short-circuit type patch antenna, good radiation characteristics can be obtained by reducing the length of the radiation plate to about one-fourth of the wavelength emitted by the radiation plate. Therefore, the length of each radiation plate can be halved as compared with the case of using a normal patch antenna, and the antenna device can be further miniaturized.
　さらに、上記のアンテナ装置においては、第１放射板の給電点に接続される第１給電線と、第２放射板の給電点に接続される第２給電線とが、別々に設けられる。これにより、給電線の長さを放射板毎に個別に調整することができるため、インピーダンス調整を容易に行なうことができる。その結果、放射特性を改善し易くすることができる。 Further, in the above antenna device, a first feeder line connected to the feeding point of the first radiation plate and a second feeding line connected to the feeding point of the second radiation plate are separately provided. As a result, the length of the feeder line can be adjusted individually for each radiation plate, so that impedance adjustment can be easily performed. As a result, the radiation characteristics can be easily improved.
　本開示によれば、小型化が可能で、かつ放射特性を改善し易い、マルチバンド型のアンテナ装置を提供することができる。 According to the present disclosure, it is possible to provide a multi-band type antenna device that can be miniaturized and whose radiation characteristics can be easily improved.
通信装置の一例のブロック図である。It is a block diagram of an example of a communication device. 通信装置の内部を透視した斜視図である。It is a perspective view which see through the inside of a communication device. 通信装置の内部を透視した側面図である。It is a side view which see through the inside of a communication device. アンテナ装置の内部をＸ軸方向から透視した図（その１）である。It is the figure (the 1) which saw through the inside of the antenna device from the X-axis direction. アンテナ装置の内部を透視した斜視図である。It is a perspective view which saw through the inside of an antenna device. アンテナ装置の断面図（その１）である。It is sectional drawing (the 1) of the antenna device. アンテナ装置の断面図（その２）である。It is sectional drawing (the 2) of the antenna device. アンテナ装置の断面図（その３）である。It is sectional drawing (the 3) of the antenna device. アンテナ装置の断面図（その４）である。It is sectional drawing (the 4) of the antenna device. アンテナ装置の断面図（その５）である。It is sectional drawing (the 5) of the antenna device. アンテナ装置の断面図（その６）である。It is sectional drawing (the 6) of the antenna device. アンテナ装置の内部をＸ軸方向から透視した図（その２）である。It is the figure (2) which saw through the inside of the antenna device from the X-axis direction. アンテナ装置の内部をＸ軸方向から透視した図（その３）である。FIG. 3 is a perspective view of the inside of the antenna device from the X-axis direction. アンテナ装置の内部をＸ軸方向から透視した図（その４）である。It is the figure (4) which saw through the inside of the antenna device from the X-axis direction. アンテナ装置の内部をＸ軸方向から透視した図（その５）である。FIG. 5 is a perspective view of the inside of the antenna device from the X-axis direction (No. 5).
　以下、本開示の実施の形態について、図面を参照しながら詳細に説明する。なお、図中同一または相当部分には同一符号を付してその説明は繰り返さない。 Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. The same or corresponding parts in the drawings are designated by the same reference numerals, and the description thereof will not be repeated.
　（通信装置の基本構成）
　図１は、本実施の形態に係るアンテナ装置１２０が適用される通信装置１０の一例のブロック図である。通信装置１０は、たとえば、携帯電話、スマートフォンあるいはタブレットなどの携帯端末や、通信機能を備えたパーソナルコンピュータなどである。 (Basic configuration of communication device)
FIG. 1 is a block diagram of an example of a communication device 10 to which the antenna device 120 according to the present embodiment is applied. The communication device 10 is, for example, a mobile terminal such as a mobile phone, a smartphone or a tablet, a personal computer having a communication function, or the like.
　図１を参照して、通信装置１０は、アンテナモジュール１００と、ベースバンド信号処理回路を構成するＢＢＩＣ２００とを備える。アンテナモジュール１００は、給電回路の一例であるＲＦＩＣ１１０と、アンテナ装置１２０とを備える。通信装置１０は、ＢＢＩＣ２００からアンテナモジュール１００へ伝達された信号を高周波信号にアップコンバートしてアンテナ装置１２０から放射するとともに、アンテナ装置１２０で受信した高周波信号をダウンコンバートしてＢＢＩＣ２００にて信号を処理する。 With reference to FIG. 1, the communication device 10 includes an antenna module 100 and a BBIC 200 constituting a baseband signal processing circuit. The antenna module 100 includes an RFIC 110, which is an example of a power feeding circuit, and an antenna device 120. The communication device 10 up-converts the signal transmitted from the BBIC 200 to the antenna module 100 into a high-frequency signal and radiates it from the antenna device 120, and down-converts the high-frequency signal received by the antenna device 120 to process the signal at the BBIC 200. To do.
　アンテナ装置１２０は、複数のアンテナユニット１２５を含む。本実施の形態においては、複数のアンテナユニット１２５が所定間隔を隔てて直線状に並べて配置される。アンテナユニット１２５の各々は、第１放射板１２１および第２放射板１２２を含む。第１放射板１２１および第２放射板１２２は、どちらも、平板形状を有する、片側短絡型パッチアンテナである。 The antenna device 120 includes a plurality of antenna units 125. In the present embodiment, a plurality of antenna units 125 are arranged in a straight line at predetermined intervals. Each of the antenna units 125 includes a first radiation plate 121 and a second radiation plate 122. The first radiation plate 121 and the second radiation plate 122 are both one-sided short-circuit type patch antennas having a flat plate shape.
　アンテナ装置１２０は、アンテナユニット１２５の第１放射板１２１および第２放射板１２２から、それぞれ異なる周波数帯域の電波を放射することが可能に構成されている。すなわち、アンテナ装置１２０は、デュアルバンド型のアンテナ装置である。第１放射板１２１は、第１周波数ｆ１の帯域の高周波信号を放射可能に構成される。第２放射板１２２は、第１周波数ｆ１よりも低い第２周波数ｆ２の帯域の高周波信号を放射可能に構成される。第１周波数ｆ１および第２周波数ｆ２は、特に限定されないが、たとえば６０ＧＨｚおよび２８ＧＨｚにそれぞれ設定され得る。 The antenna device 120 is configured to be capable of radiating radio waves in different frequency bands from the first radiation plate 121 and the second radiation plate 122 of the antenna unit 125. That is, the antenna device 120 is a dual band type antenna device. The first radiation plate 121 is configured to be capable of radiating a high frequency signal in the band of the first frequency f1. The second radiation plate 122 is configured to be capable of radiating a high frequency signal in the band of the second frequency f2 lower than the first frequency f1. The first frequency f1 and the second frequency f2 are not particularly limited, but may be set to, for example, 60 GHz and 28 GHz, respectively.
　図１では、説明を容易にするために、アンテナ装置１２０を構成する複数のアンテナユニット１２５のうち、４つのアンテナユニット１２５に対応する構成のみ示され、同様の構成を有する他のアンテナユニット１２５に対応する構成については省略されている。 In FIG. 1, for the sake of simplicity, only the configurations corresponding to the four antenna units 125 among the plurality of antenna units 125 constituting the antenna device 120 are shown, and the other antenna units 125 having the same configuration are shown. The corresponding configuration is omitted.
　ＲＦＩＣ１１０は、スイッチ１１１Ａ～１１１Ｈ，１１３Ａ～１１３Ｈ，１１７Ａ，１１７Ｂと、パワーアンプ１１２ＡＴ～１１２ＨＴと、ローノイズアンプ１１２ＡＲ～１１２ＨＲと、減衰器１１４Ａ～１１４Ｈと、移相器１１５Ａ～１１５Ｈと、信号合成／分波器１１６Ａ，１１６Ｂと、ミキサ１１８Ａ，１１８Ｂと、増幅回路１１９Ａ、１１９Ｂとを備える。このうち、スイッチ１１１Ａ～１１１Ｄ，１１３Ａ～１１３Ｄ，１１７Ａ、パワーアンプ１１２ＡＴ～１１２ＤＴ、ローノイズアンプ１１２ＡＲ～１１２ＤＲ、減衰器１１４Ａ～１１４Ｄ、移相器１１５Ａ～１１５Ｄ、信号合成／分波器１１６Ａ、ミキサ１１８Ａ、および増幅回路１１９Ａの構成が、第１放射板１２１から放射される第１周波数帯域の高周波信号のための回路である。また、スイッチ１１１Ｅ～１１１Ｈ，１１３Ｅ～１１３Ｈ，１１７Ｂ、パワーアンプ１１２ＥＴ～１１２ＨＴ、ローノイズアンプ１１２ＥＲ～１１２ＨＲ、減衰器１１４Ｅ～１１４Ｈ、移相器１１５Ｅ～１１５Ｈ、信号合成／分波器１１６Ｂ、ミキサ１１８Ｂ、および増幅回路１１９Ｂの構成が、第２放射板１２２から放射される第２周波数帯域の高周波信号のための回路である。 The RFIC 110 includes switches 111A to 111H, 113A to 113H, 117A, 117B, power amplifiers 112AT to 112HT, low noise amplifiers 112AR to 112HR, attenuators 114A to 114H, phase shifters 115A to 115H, and signal synthesis / minute. It includes wave devices 116A and 116B, mixers 118A and 118B, and amplifier circuits 119A and 119B. Of these, switches 111A to 111D, 113A to 113D, 117A, power amplifiers 112AT to 112DT, low noise amplifiers 112AR to 112DR, attenuators 114A to 114D, phase shifters 115A to 115D, signal synthesizer / demultiplexer 116A, mixer 118A, And the configuration of the amplifier circuit 119A is a circuit for a high frequency signal of the first frequency band radiated from the first radiation plate 121. Further, switches 111E to 111H, 113E to 113H, 117B, power amplifiers 112ET to 112HT, low noise amplifiers 112ER to 112HR, attenuators 114E to 114H, phase shifters 115E to 115H, signal synthesizer / demultiplexer 116B, mixer 118B, and The configuration of the amplifier circuit 119B is a circuit for a high frequency signal in the second frequency band radiated from the second radiation plate 122.
　高周波信号を送信する場合には、スイッチ１１１Ａ～１１１Ｈ，１１３Ａ～１１３Ｈがパワーアンプ１１２ＡＴ～１１２ＨＴ側へ切換えられるとともに、スイッチ１１７Ａ，１１７Ｂが増幅回路１１９Ａ，１１９Ｂの送信側アンプに接続される。高周波信号を受信する場合には、スイッチ１１１Ａ～１１１Ｈ，１１３Ａ～１１３Ｈがローノイズアンプ１１２ＡＲ～１１２ＨＲ側へ切換えられるとともに、スイッチ１１７Ａ，１１７Ｂが増幅回路１１９Ａ，１１９Ｂの受信側アンプに接続される。 When transmitting a high frequency signal, the switches 111A to 111H and 113A to 113H are switched to the power amplifiers 112AT to 112HT side, and the switches 117A and 117B are connected to the transmitting side amplifiers of the amplifier circuits 119A and 119B. When receiving a high frequency signal, the switches 111A to 111H and 113A to 113H are switched to the low noise amplifiers 112AR to 112HR, and the switches 117A and 117B are connected to the receiving side amplifiers of the amplifier circuits 119A and 119B.
　ＢＢＩＣ２００から伝達された信号は、増幅回路１１９Ａ，１１９Ｂで増幅され、ミキサ１１８Ａ，１１８Ｂでアップコンバートされる。アップコンバートされた高周波信号である送信信号は、信号合成／分波器１１６Ａ，１１６Ｂで４分波され、対応する信号経路を通過して、それぞれ異なる第１放射板１２１および第２放射板１２２に給電される。各信号経路に配置された移相器１１５Ａ～１１５Ｈの移相度が個別に調整されることにより、アンテナ装置１２０の指向性を調整することができる。 The signal transmitted from the BBIC 200 is amplified by the amplifier circuits 119A and 119B, and up-converted by the mixers 118A and 118B. The transmitted signal, which is an up-converted high-frequency signal, is demultiplexed by the signal synthesizer / demultiplexers 116A and 116B, passes through the corresponding signal paths, and reaches different first radiation plates 121 and second radiation plates 122, respectively. Powered. The directivity of the antenna device 120 can be adjusted by individually adjusting the degree of phase shift of the phase shifters 115A to 115H arranged in each signal path.
　第１放射板１２１および第２放射板１２２で受信された高周波信号である受信信号はＲＦＩＣ１１０に伝達され、それぞれ異なる４つの信号経路を経由して信号合成／分波器１１６Ａ，１１６Ｂにおいて合波される。合波された受信信号は、ミキサ１１８Ａ，１１８Ｂでダウンコンバートされ、増幅回路１１９Ａ，１１９Ｂで増幅されてＢＢＩＣ２００へ伝達される。 The received signal, which is a high-frequency signal received by the first radiation plate 121 and the second radiation plate 122, is transmitted to the RFIC 110 and combined in the signal synthesizer / demultiplexers 116A and 116B via four different signal paths. To. The combined received signal is down-converted by the mixers 118A and 118B, amplified by the amplifier circuits 119A and 119B, and transmitted to the BBIC 200.
　ＲＦＩＣ１１０は、例えば、上記回路構成を含む１チップの集積回路部品として形成される。あるいは、ＲＦＩＣ１１０における各アンテナユニット１２５に対応する機器（スイッチ、パワーアンプ、ローノイズアンプ、減衰器、移相器）については、対応するアンテナユニット１２５毎に１チップの集積回路部品として形成されてもよい。 The RFIC 110 is formed as, for example, a one-chip integrated circuit component including the above circuit configuration. Alternatively, the devices (switch, power amplifier, low noise amplifier, attenuator, phase shifter) corresponding to each antenna unit 125 in the RFIC 110 may be formed as an integrated circuit component of one chip for each corresponding antenna unit 125. ..
　（アンテナ装置の配置）
　図２は、通信装置１０の内部を透視した斜視図である。通信装置１０は、筐体１１で覆われている。筐体１１の内部には、アンテナ装置１２０、アンテナ装置１２０を実装する実装基板２０が設けられる。アンテナ装置１２０は、実装基板２０の主面２１ではなく、実装基板２０の側面２２に隣接して配置される。 (Arrangement of antenna device)
FIG. 2 is a perspective view of the inside of the communication device 10. The communication device 10 is covered with a housing 11. Inside the housing 11, an antenna device 120 and a mounting board 20 on which the antenna device 120 is mounted are provided. The antenna device 120 is arranged adjacent to the side surface 22 of the mounting board 20 instead of the main surface 21 of the mounting board 20.
　図３は、通信装置１０の内部を、実装基板２０の主面２１および側面２２に沿う方向から透視した側面図である。上述したように、アンテナ装置１２０は、実装基板２０の側面２２に隣接して配置される。アンテナ装置１２０と実装基板２０とは接続線１６０によって接続される。 FIG. 3 is a side view of the inside of the communication device 10 viewed from the direction along the main surface 21 and the side surface 22 of the mounting board 20. As described above, the antenna device 120 is arranged adjacent to the side surface 22 of the mounting board 20. The antenna device 120 and the mounting board 20 are connected by a connecting line 160.
　アンテナ装置１２０は、内側表面１３１と外側表面１３２とを有する誘電体１３０によって形成される。誘電体１３０は、内側表面１３１から外側表面１３２に向かう方向を積層方向として、複数の誘電体層が積層方向に積層されて形成される。誘電体１３０は、たとえば、エポキシ、ポリイミドなどの樹脂で形成される。なお、誘電体１３０は、より低い誘電率を有する液晶ポリマー（Liquid　Crystal　Polymer：ＬＣＰ）あるいはフッ素系樹脂を用いて形成されてもよい。ＲＦＩＣ１１０は、誘電体１３０の内側表面１３１に実装される。 The antenna device 120 is formed of a dielectric 130 having an inner surface 131 and an outer surface 132. The dielectric 130 is formed by laminating a plurality of dielectric layers in the laminating direction with the direction from the inner surface 131 to the outer surface 132 as the laminating direction. The dielectric 130 is formed of, for example, a resin such as epoxy or polyimide. The dielectric 130 may be formed by using a liquid crystal polymer (LCP) or a fluororesin having a lower dielectric constant. The RFIC 110 is mounted on the inner surface 131 of the dielectric 130.
　誘電体１３０の内側表面１３１に近い層には、内側表面１３１に沿う方向に延在する平板状の２枚の接地板ＧＮＤ１，ＧＮＤ２が設けられる。以下では、接地板ＧＮＤ１の法線方向を「Ｘ軸方向」、接地板ＧＮＤ１の延在方向であってアンテナ装置１２０の長さ方向に沿う方向を「Ｙ軸方向」、Ｘ軸方向およびＹ軸方向に垂直な方向を「Ｚ軸方向」とも称する。 In the layer close to the inner surface 131 of the dielectric 130, two flat plate-shaped ground plates GND1 and GND2 extending in the direction along the inner surface 131 are provided. In the following, the normal direction of the ground plate GND1 is the "X-axis direction", the extending direction of the ground plate GND1 along the length direction of the antenna device 120 is the "Y-axis direction", the X-axis direction and the Y-axis. The direction perpendicular to the direction is also referred to as "Z-axis direction".
　通信装置１０の筐体１１の厚さ（Ｚ軸方向の長さ）Ｔは、筐体１１のＸ軸方向の長さおよびＹ軸方向の長さに比べて、かなり短い。アンテナ装置１２０のＺ軸方向の長さは、筐体１１の薄い厚さＴの制約を受ける。この点に鑑み、本実施の形態によるアンテナ装置１２０においては、Ｚ軸方向の長さを小型化するための工夫が施されている。 The thickness (length in the Z-axis direction) T of the housing 11 of the communication device 10 is considerably shorter than the length in the X-axis direction and the length in the Y-axis direction of the housing 11. The length of the antenna device 120 in the Z-axis direction is restricted by the thin thickness T of the housing 11. In view of this point, the antenna device 120 according to the present embodiment is devised to reduce the length in the Z-axis direction.
　図４は、アンテナ装置１２０の内部をＸ軸方向から透視した図である。アンテナ装置１２０の内部には、複数のアンテナユニット１２５が、接地板の延在方向と平行なＹ軸方向に沿って並べて配置される。Ｘ軸方向からアンテナ装置１２０を透視したとき、各アンテナユニット１２５における第１放射板１２１と第２放射板１２２とは、互いに重なり合う部分を有する。 FIG. 4 is a perspective view of the inside of the antenna device 120 from the X-axis direction. Inside the antenna device 120, a plurality of antenna units 125 are arranged side by side along the Y-axis direction parallel to the extending direction of the ground plate. When the antenna device 120 is viewed through from the X-axis direction, the first radiation plate 121 and the second radiation plate 122 in each antenna unit 125 have portions that overlap each other.
　図５は、アンテナ装置１２０の内部を透視した斜視図である。図６は、図４におけるアンテナ装置１２０のＶＩ－ＶＩ断面図である。図５、図６を参照して、アンテナ装置１２０の構成についてさらに説明する。アンテナ装置１２０の説明においては、Ｘ軸の正方向を「上」とし、Ｘ軸の正方向を「下」として説明する場合がある。 FIG. 5 is a perspective view of the inside of the antenna device 120. FIG. 6 is a VI-VI cross-sectional view of the antenna device 120 in FIG. The configuration of the antenna device 120 will be further described with reference to FIGS. 5 and 6. In the description of the antenna device 120, the positive direction of the X-axis may be described as "up" and the positive direction of the X-axis may be described as "down".
　アンテナ装置１２０は、平板状の２枚の接地板ＧＮＤ１，ＧＮＤ２と、アンテナユニット１２５と、第１給電線１４１と、第２給電線１４２と、複数の第１接地ビア１５１と、複数の第２接地ビア１５２とを備える。 The antenna device 120 includes two flat plate-shaped grounding plates GND1 and GND2, an antenna unit 125, a first feeder line 141, a second feeder line 142, a plurality of first grounding vias 151, and a plurality of second feeding lines. It is provided with a grounding via 152.
　接地板ＧＮＤ１，ＧＮＤ２は、誘電体１３０の下層に配置され、下層全体に亘ってＹ軸方向およびＺ軸方向に延在するように構成される。接地板ＧＮＤ１，ＧＮＤ２は、互いに所定距離を隔ててＸ軸方向に並べて配置される。 The ground plates GND1 and GND2 are arranged in the lower layer of the dielectric 130, and are configured to extend in the Y-axis direction and the Z-axis direction over the entire lower layer. The ground plates GND1 and GND2 are arranged side by side in the X-axis direction with a predetermined distance from each other.
　アンテナユニット１２５に含まれる第１放射板１２１および第２放射板１２２は、どちらも、接地板ＧＮＤ１と対向するように配置される。第１放射板１２１は、第２放射板１２２よりも上層（接地板ＧＮＤ１から離れた位置）に配置される。 Both the first radiation plate 121 and the second radiation plate 122 included in the antenna unit 125 are arranged so as to face the ground plate GND1. The first radiation plate 121 is arranged in a layer above the second radiation plate 122 (a position away from the ground plate GND1).
　第１放射板１２１のＺ軸の負方向側の端部１２１ａは、複数の第１接地ビア１５１によって接地板ＧＮＤ１に接続される。なお、図５には端部１２１ａの全体が接地板ＧＮＤ１に接続される例が示されるが、端部１２１ａの一部が接地板ＧＮＤ１に接続されるものであってもよい。以下では、第１接地ビア１５１によって接地板ＧＮＤ１に接続される、第１放射板１２１の端部１２１ａを、「第１放射板１２１の接地端部１２１ａ」とも称する。 The end portion 121a of the first radiation plate 121 on the negative direction side of the Z axis is connected to the ground plate GND1 by a plurality of first ground vias 151. Although FIG. 5 shows an example in which the entire end portion 121a is connected to the grounding plate GND1, a part of the end portion 121a may be connected to the grounding plate GND1. Hereinafter, the end portion 121a of the first radiation plate 121 connected to the ground plate GND1 by the first grounding via 151 is also referred to as “the grounding end portion 121a of the first radiation plate 121”.
　第２放射板１２２のＺ軸の負方向側の端部１２２ａは、複数の第２接地ビア１５２によって接地板ＧＮＤ１に接続される。なお、図５には端部１２２ａの全体が接地板ＧＮＤ１に接続される例が示されるが、端部１２２ａの一部が接地板ＧＮＤ１に接続されるものであってもよい。以下では、第２接地ビア１５２によって接地板ＧＮＤ１に接続される、第２放射板１２２の端部１２２ａを、「第２放射板１２２の接地端部１２２ａ」とも称する。 The end portion 122a of the second radiation plate 122 on the negative direction side of the Z axis is connected to the ground plate GND1 by a plurality of second ground vias 152. Although FIG. 5 shows an example in which the entire end portion 122a is connected to the grounding plate GND1, a part of the end portion 122a may be connected to the grounding plate GND1. Hereinafter, the end portion 122a of the second radiation plate 122 connected to the ground plate GND1 by the second grounding via 152 is also referred to as “the grounding end portion 122a of the second radiation plate 122”.
　第１放射板１２１の接地端部１２１ａと第２放射板１２２の接地端部１２２ａとは、Ｚ軸方向において揃えられている。言い換えれば、Ｘ軸方向（接地板ＧＮＤ１の法線方向）からアンテナ装置１２０を透視したとき、第１放射板１２１の接地端部１２１ａと第２放射板１２２の接地端部１２２ａとは、互いに重なり合う部分を有する。 The ground contact end 121a of the first radiation plate 121 and the ground contact end 122a of the second radiation plate 122 are aligned in the Z-axis direction. In other words, when the antenna device 120 is seen through from the X-axis direction (normal direction of the grounding plate GND1), the grounding end portion 121a of the first radiation plate 121 and the grounding end portion 122a of the second radiation plate 122 overlap each other. Has a part.
　さらに、第１接地ビア１５１は、第２放射板１２２の接地端部１２２ａにも接続されている。したがって、第１接地ビア１５１と第２接地ビア１５２とは、互いに共用される部分を有する。すなわち、第１接地ビア１５１の一部（接地板ＧＮＤ１から第２放射板１２２の接地端部１２２ａまでの部分）は、第２接地ビア１５２の一部としても機能する。さらに、第１放射板１２１の接地端部１２１ａと第２放射板１２２の接地端部１２２ａとは、第１接地ビア１５１の残りの一部（第１放射板１２１の接地端部１２２ａから第２放射板１２２の接地端部１２１ａまでの部分）によってＸ軸方向に直線的に接続される。 Further, the first grounding via 151 is also connected to the grounding end 122a of the second radiation plate 122. Therefore, the first grounded via 151 and the second grounded via 152 have a portion shared with each other. That is, a part of the first grounding via 151 (the part from the grounding plate GND1 to the grounding end portion 122a of the second radiation plate 122) also functions as a part of the second grounding via 152. Further, the grounding end portion 121a of the first radiation plate 121 and the grounding end portion 122a of the second radiation plate 122 are the remaining part of the first grounding via 151 (the second from the grounding end portion 122a of the first radiation plate 121). A portion of the radiation plate 122 up to the grounding end 121a) is linearly connected in the X-axis direction.
　第１給電線１４１の下側の端部は、ＲＦＩＣ１１０に接続される。第１給電線１４１の上側の端部は、第１放射板１２１の給電点ＳＰ１に接続される。第１放射板１２１とＲＦＩＣ１１０との間に配置される第２放射板１２２および接地板ＧＮＤ１，ＧＮＤ２は第１給電線１４１との接触を避けるための貫通穴を有しており、第１給電線１４１はこれらの貫通穴を通るように配置される。 The lower end of the first feeder line 141 is connected to the RFIC 110. The upper end of the first feeder line 141 is connected to the feeder point SP1 of the first radiation plate 121. The second radiation plate 122 and the ground plates GND1 and GND2 arranged between the first radiation plate 121 and the RFIC 110 have through holes for avoiding contact with the first feed line 141, and the first feeder line 141 is arranged to pass through these through holes.
　ＲＦＩＣ１１０からの信号が第１給電線１４１を通って第１放射板１２１の給電点ＳＰ１に供給されることによって、第１放射板１２１からは、第１周波数ｆ１（たとえば６０ＧＨｚ）帯域の高周波信号が放射される。なお、第１放射板１２１の給電点ＳＰ１が接地端部１２１ａよりもＺ軸の正方向の位置に配置されているため、第１放射板１２１からは、Ｚ軸方向を励振方向とする偏波が、Ｘ軸の正方向（第１放射板１２１の法線方向）よりもＺ軸の正方向側に傾いた方向に向けて放射される。 By supplying the signal from the RFIC 110 to the feeding point SP1 of the first radiation plate 121 through the first feeding line 141, a high frequency signal in the first frequency f1 (for example, 60 GHz) band is transmitted from the first radiation plate 121. Be radiated. Since the feeding point SP1 of the first radiation plate 121 is arranged at a position in the positive direction of the Z axis with respect to the ground contact end portion 121a, polarization from the first radiation plate 121 with the Z axis direction as the excitation direction. Is radiated in a direction inclined toward the positive direction of the Z axis from the positive direction of the X axis (the normal direction of the first radiation plate 121).
　第２給電線１４２は、第１給電線１４１とは別々に設けられる。第２給電線１４２の下側の端部は、ＲＦＩＣ１１０に接続される。第２給電線１４２の上側の端部は、第２放射板１２２の給電点ＳＰ２に接続される。第２放射板１２２とＲＦＩＣ１１０との間に配置される接地板ＧＮＤ１，ＧＮＤ２は第２給電線１４２との接触を避けるための貫通穴を有しており、第２給電線１４２はこれらの貫通穴を通るように配置される。 The second feeder line 142 is provided separately from the first feeder line 141. The lower end of the second feeder 142 is connected to the RFIC 110. The upper end of the second feeder line 142 is connected to the feeder point SP2 of the second radiation plate 122. The ground plates GND1 and GND2 arranged between the second radiation plate 122 and the RFIC 110 have through holes for avoiding contact with the second feeder line 142, and the second feeder line 142 has these through holes. Arranged to pass through.
　ＲＦＩＣ１１０からの信号が第２給電線１４２を通って第２放射板１２２の給電点ＳＰ２に供給されることによって、第２放射板１２２からは、第２周波数ｆ２（たとえば２８ＧＨｚ）帯域の高周波信号が放射される。なお、第２放射板１２２の給電点ＳＰ２が接地端部１２２ａよりもＺ軸の正方向に配置されているため、第２放射板１２２からは、Ｚ軸方向を励振方向とする偏波が、Ｘ軸の正方向（第２放射板１２２の法線方向）よりもＺ軸の正方向側に傾いた方向に向けて放射される。 By supplying the signal from the RFIC 110 to the feeding point SP2 of the second radiation plate 122 through the second feeding line 142, a high frequency signal in the second frequency f2 (for example, 28 GHz) band is transmitted from the second radiation plate 122. Be radiated. Since the feeding point SP2 of the second radiation plate 122 is arranged in the positive direction of the Z axis with respect to the ground contact end portion 122a, polarization with the Z axis direction as the excitation direction is generated from the second radiation plate 122. The radiation is emitted in a direction inclined toward the positive direction of the Z axis from the positive direction of the X axis (normal direction of the second radiation plate 122).
　一般的に、通常のパッチアンテナの放射板の長さは波長の２分の１程度とされるが、片側短絡型パッチアンテナの放射板の長さは波長の４分の１程度とされる。そのため、第１放射板１２１のＺ軸方向の長さＬ１は、第１周波数ｆ１（６０ＧＨｚ）の信号の波長の４分の１程度に設定される。第２放射板１２２のＺ軸方向の長さＬ２は、第２周波数ｆ２（２８ＧＨｚ）の信号の波長の４分の１程度に設定される。したがって、第１放射板１２１のＺ軸方向の長さＬ１は、第２放射板１２２のＺ軸方向の長さＬ２よりも短い。 Generally, the length of the radiation plate of a normal patch antenna is about half of the wavelength, but the length of the radiation plate of a one-sided short-circuit type patch antenna is about one-fourth of the wavelength. Therefore, the length L1 of the first radiation plate 121 in the Z-axis direction is set to about one-fourth of the wavelength of the signal of the first frequency f1 (60 GHz). The length L2 of the second radiation plate 122 in the Z-axis direction is set to about one-fourth of the wavelength of the signal of the second frequency f2 (28 GHz). Therefore, the length L1 of the first radiation plate 121 in the Z-axis direction is shorter than the length L2 of the second radiation plate 122 in the Z-axis direction.
　（アンテナ装置の特性）
　以上のような構成を有するアンテナ装置１２０の特性について説明する。 (Characteristics of antenna device)
The characteristics of the antenna device 120 having the above configuration will be described.
　上述のように、本実施の形態に係るアンテナ装置１２０においては、Ｘ軸方向（接地板ＧＮＤ１の法線方向）からアンテナ装置１２０を透視したとき、第１放射板１２１と第２放射板１２２とは互いに重なり合う部分を有する。これにより、たとえば第１放射板１２１と第２放射板１２２とが重なり合うことなくＺ軸方向に並べて配置される場合に比べて、アンテナユニット１２５のＺ軸方向のサイズを小さくすることが可能になる。なお、アンテナユニット１２５、第１放射板１２１、第２放射板１２２、および接地板ＧＮＤ１は、本開示の「アンテナユニット」、「第１放射板」、「第２放射板」、および「接地板」にそれぞれ対応し得る。 As described above, in the antenna device 120 according to the present embodiment, when the antenna device 120 is seen through from the X-axis direction (normal direction of the ground plate GND1), the first radiation plate 121 and the second radiation plate 122 Have parts that overlap each other. As a result, for example, the size of the antenna unit 125 in the Z-axis direction can be reduced as compared with the case where the first radiation plate 121 and the second radiation plate 122 are arranged side by side in the Z-axis direction without overlapping. .. The antenna unit 125, the first radiation plate 121, the second radiation plate 122, and the ground plate GND1 are the "antenna unit", the "first radiation plate", the "second radiation plate", and the "ground plate" of the present disclosure. Can correspond to each.
　さらに、第１放射板１２１は、接地板ＧＮＤ１に接続されない通常のパッチアンテナではなく、片側の接地端部１２１ａが接地板ＧＮＤ１に接続された片側短絡型パッチアンテナである。また、第２放射板１２２も、接地板ＧＮＤ１に接続されない通常のパッチアンテナではなく、片側の接地端部１２２ａが接地板ＧＮＤ１に接続された片側短絡型パッチアンテナである。そのため、本実施の形態に係るアンテナ装置１２０においては、通常のパッチアンテナを用いる場合に比べて、第１放射板１２１のＺ軸方向の長さＬ１および第２放射板１２２のＺ軸方向の長さＬ２をそれぞれ約半分にすることができ、アンテナ装置１２０のＺ軸方向のサイズをより小さくすることが可能となる。なお、接地端部１２１ａおよび接地端部１２２ａは、本開示の「第１接地端部」および「第２接地端部」にそれぞれ対応し得る。 Further, the first radiation plate 121 is not a normal patch antenna that is not connected to the ground plate GND1, but a one-side short-circuit type patch antenna in which the ground end 121a on one side is connected to the ground plate GND1. Further, the second radiation plate 122 is not a normal patch antenna not connected to the ground plate GND1, but a one-side short-circuit type patch antenna in which the ground end 122a on one side is connected to the ground plate GND1. Therefore, in the antenna device 120 according to the present embodiment, the length L1 of the first radiation plate 121 in the Z-axis direction and the length of the second radiation plate 122 in the Z-axis direction are longer than in the case of using a normal patch antenna. Each of the L2 can be halved, and the size of the antenna device 120 in the Z-axis direction can be further reduced. The grounding end portion 121a and the grounding end portion 122a may correspond to the "first grounding end portion" and the "second grounding end portion" of the present disclosure, respectively.
　さらに、第１放射板１２１の給電点ＳＰ１に接続される第１給電線１４１と、第２放射板１２２の給電点ＳＰ２に接続される第２給電線１４２とが、別々に設けられる。これにより、第１給電線１４１の長さと第２給電線１４２の長さとを個別に調整することができるため、インピーダンス調整を容易に行なうことができ、放射特性を改善し易くすることができる。なお、第１給電線１４１および第２給電線１４２は、本開示の「第１給電線」および「第２給電線」にそれぞれ対応し得る。 Further, a first feeder line 141 connected to the feed point SP1 of the first radiation plate 121 and a second feeder line 142 connected to the feed point SP2 of the second radiation plate 122 are separately provided. As a result, the length of the first feeder line 141 and the length of the second feeder line 142 can be adjusted individually, so that the impedance can be easily adjusted and the radiation characteristics can be easily improved. The first feeder line 141 and the second feeder line 142 can correspond to the "first feeder line" and the "second feeder line" of the present disclosure, respectively.
　以上のように、本実施の形態においては、小型化が可能で、かつ放射特性を改善し易い、デュアルバンド型のアンテナ装置１２０が実現される。 As described above, in the present embodiment, the dual band type antenna device 120 which can be miniaturized and whose radiation characteristics can be easily improved is realized.
　さらに、本実施の形態に係るアンテナ装置１２０においては、第１放射板１２１の接地端部１２１ａと第２放射板１２２の接地端部１２２ａとは、Ｚ軸方向において揃えられている。言い換えれば、Ｘ軸方向からアンテナ装置１２０を透視したとき、第１放射板１２１の接地端部１２１ａと第２放射板１２２の接地端部１２２ａとは、互いに重なり合う部分を有する。そのため、たとえば第１放射板１２１の接地端部１２１ａが第２放射板１２２の接地端部１２２ａよりもＺ軸の負方向にずれている場合に比べて、アンテナ装置１２０のＺ軸方向のサイズをより小さくすることが可能となる。 Further, in the antenna device 120 according to the present embodiment, the grounding end portion 121a of the first radiation plate 121 and the grounding end portion 122a of the second radiation plate 122 are aligned in the Z-axis direction. In other words, when the antenna device 120 is seen through from the X-axis direction, the grounding end portion 121a of the first radiation plate 121 and the grounding end portion 122a of the second radiation plate 122 have a portion that overlaps with each other. Therefore, for example, the size of the antenna device 120 in the Z-axis direction is larger than that in the case where the grounding end portion 121a of the first radiation plate 121 is deviated from the grounding end portion 122a of the second radiation plate 122 in the negative direction of the Z-axis. It can be made smaller.
　さらに、本実施の形態に係るアンテナ装置１２０においては、第１接地ビア１５１と第２接地ビア１５２とは互いに共用される部分を有する。すなわち、第１接地ビア１５１の一部（接地板ＧＮＤ１から第２放射板１２２の接地端部１２２ａまでの部分）は、第２接地ビア１５２の一部としても機能する。そのため、第１接地ビア１５１と第２接地ビア１５２とが互いに共用される部分を有しない場合に比べて、第１接地ビア１５１および第２接地ビア１５２の構成を簡素化できる。なお、第１接地ビア１５１および第２接地ビア１５２は、本開示の「第１接地線」および「第２接地線」にそれぞれ対応し得る。 Further, in the antenna device 120 according to the present embodiment, the first grounded via 151 and the second grounded via 152 have a portion shared with each other. That is, a part of the first grounding via 151 (the part from the grounding plate GND1 to the grounding end portion 122a of the second radiation plate 122) also functions as a part of the second grounding via 152. Therefore, the configurations of the first grounded via 151 and the second grounded via 152 can be simplified as compared with the case where the first grounded via 151 and the second grounded via 152 do not have a portion shared with each other. The first grounding via 151 and the second grounding via 152 can correspond to the "first grounding wire" and the "second grounding wire" of the present disclosure, respectively.
　さらに、本実施の形態に係るアンテナ装置１２０においては、第１放射板１２１の接地端部１２１ａと第２放射板１２２の接地端部１２２ａとが、第１接地ビア１５１の残りの一部（第１放射板１２１の接地端部１２２ａから第２放射板１２２の接地端部１２１ａまでの部分）によって、Ｘ軸方向に直線的に接続される。そのため、第１接地ビア１５１の長さを短くすることができる。 Further, in the antenna device 120 according to the present embodiment, the grounding end portion 121a of the first radiation plate 121 and the grounding end portion 122a of the second radiation plate 122 are the remaining part of the first grounding via 151 (the first). It is linearly connected in the X-axis direction by a portion) from the grounding end portion 122a of the 1 radiation plate 121 to the grounding end portion 121a of the second radiation plate 122. Therefore, the length of the first grounding via 151 can be shortened.
　さらに、本実施の形態に係るアンテナ装置１２０においては、複数のアンテナユニット１２５が接地板ＧＮＤ１の延在方向と平行なＹ軸方向に沿って並べて配置される。これにより、デュアルバンド型のアレイアンテナが実現される。 Further, in the antenna device 120 according to the present embodiment, a plurality of antenna units 125 are arranged side by side along the Y-axis direction parallel to the extending direction of the ground plate GND1. As a result, a dual band type array antenna is realized.
　＜変形例１＞
　上述の実施の形態に係るアンテナ装置１２０においては、誘電体１３０が１つの基板で形成されており、接地端部１２１ａ，１２２ａと接地板ＧＮＤ１，ＧＮＤ２とが１つの基板に設けられる。しかしながら、誘電体１３０をＸ軸方向に所定間隔を隔てて配置された複数の基板で形成し、接地端部１２１ａ，１２２ａと接地板ＧＮＤ１，ＧＮＤ２とを別々の基板に設けるようにしてもよい。 <Modification example 1>
In the antenna device 120 according to the above-described embodiment, the dielectric 130 is formed of one substrate, and the grounding ends 121a and 122a and the grounding plates GND1 and GND2 are provided on one substrate. However, the dielectric 130 may be formed of a plurality of substrates arranged at predetermined intervals in the X-axis direction, and the grounding ends 121a and 122a and the grounding plates GND1 and GND2 may be provided on separate substrates.
　図７は、本変形例１に係るアンテナ装置１２０Ｈの断面図である。アンテナ装置１２０Ｈは、上述のアンテナ装置１２０の誘電体１３０を、誘電体１３０Ｈに変更したものである。誘電体１３０Ｈは、Ｘ軸方向に所定間隔を隔てて配置された第１基板１３０ａおよび第２基板１３０ｂを備える。第１基板１３０ａと第２基板１３０ｂとは、はんだバンプ１６０もしくは接着により接続される。第１放射板１２１の接地端部１２１ａおよび第２放射板１２２の接地端部１２２ａは第１基板１３０ａに設けられ、接地板ＧＮＤ１，ＧＮＤ２は第２基板１３０ｂに設けられる。接地端部１２１ａ，１２２ａは、はんだバンプ１６０もしくは接着により接地板ＧＮＤ１に接続される。このようなアンテナ装置１２０Ｈであってもよい。 FIG. 7 is a cross-sectional view of the antenna device 120H according to the first modification. The antenna device 120H is obtained by changing the dielectric 130 of the antenna device 120 described above to the dielectric 130H. The dielectric 130H includes a first substrate 130a and a second substrate 130b arranged at predetermined intervals in the X-axis direction. The first substrate 130a and the second substrate 130b are connected by solder bumps 160 or adhesion. The grounding end portion 121a of the first radiation plate 121 and the grounding end portion 122a of the second radiation plate 122 are provided on the first substrate 130a, and the grounding plates GND1 and GND2 are provided on the second substrate 130b. The grounding ends 121a and 122a are connected to the grounding plate GND1 by solder bumps 160 or adhesion. Such an antenna device 120H may be used.
　なお、第１放射板１２１および第２放射板１２２が形成される第１基板１３０ａは、筐体（たとえば通信装置１０を覆う樹脂製のハウジング）の一部によって構成されてもよい。また、はんだバンプ１６０は、ポゴピンなどの電気接点部であってもよい。 The first substrate 130a on which the first radiation plate 121 and the second radiation plate 122 are formed may be formed of a part of a housing (for example, a resin housing covering the communication device 10). Further, the solder bump 160 may be an electrical contact portion such as a pogo pin.
　＜変形例２＞
　上述の実施の形態に係るアンテナ装置１２０においては、第１放射板１２１の接地端部１２１ａと第２放射板１２２の接地端部１２２ａとがＺ軸方向において揃えられている。しかしながら、第１放射板１２１の接地端部１２１ａと第２放射板１２２の接地端部１２２ａとがＺ軸方向にずれていてもよい。 <Modification 2>
In the antenna device 120 according to the above-described embodiment, the grounding end portion 121a of the first radiation plate 121 and the grounding end portion 122a of the second radiation plate 122 are aligned in the Z-axis direction. However, the ground contact end portion 121a of the first radiation plate 121 and the ground contact end portion 122a of the second radiation plate 122 may be displaced in the Z-axis direction.
　図８は、本変形例２に係るアンテナ装置１２０Ａの断面図である。アンテナ装置１２０Ａは、上述のアンテナ装置１２０のアンテナユニット１２５および第１接地ビア１５１を、それぞれアンテナユニット１２５Ａおよび第１接地ビア１５１Ａに変更したものである。 FIG. 8 is a cross-sectional view of the antenna device 120A according to the second modification. The antenna device 120A is obtained by changing the antenna unit 125 and the first grounded via 151 of the above-mentioned antenna device 120 to the antenna unit 125A and the first grounded via 151A, respectively.
　アンテナユニット１２５Ａは、上述のアンテナユニット１２５に対して、第１放射板１２１の接地端部１２１ａが第２放射板１２２の接地端部１２２ａよりもＺ軸の負方向にずれている点が異なる。アンテナユニット１２５Ａのその他の点は上述のアンテナユニット１２５と同じである。 The antenna unit 125A is different from the above-mentioned antenna unit 125 in that the grounding end 121a of the first radiation plate 121 is displaced in the negative direction of the Z axis from the grounding end 122a of the second radiation plate 122. Other points of the antenna unit 125A are the same as those of the antenna unit 125 described above.
　第１接地ビア１５１Ａは、上述の第１接地ビア１５１に対して、第２放射板１２２の接地端部１２２ａから第１放射板１２１の接地端部１２１ａまでの部分が、Ｚ軸の負方向にずれている点が異なる。第１接地ビア１５１Ａのその他の点は上述の第１接地ビア１５１と同じである。 In the first grounding via 151A, the portion from the grounding end portion 122a of the second radiation plate 122 to the grounding end portion 121a of the first radiation plate 121 is in the negative direction of the Z axis with respect to the above-mentioned first grounding via 151. The difference is that they are out of alignment. Other points of the first grounded via 151A are the same as those of the first grounded via 151 described above.
　このように、第１放射板１２１の接地端部１２１ａと第２放射板１２２の接地端部１２２ａとがＺ軸方向にずれていてもよい。 In this way, the ground contact end portion 121a of the first radiation plate 121 and the ground contact end portion 122a of the second radiation plate 122 may be displaced in the Z-axis direction.
　図９は、本変形例２に係る他のアンテナ装置１２０Ｂの断面図である。アンテナ装置１２０Ｂは、上述のアンテナ装置１２０のアンテナユニット１２５、第１接地ビア１５１および第２接地ビア１５２を、それぞれアンテナユニット１２５Ｂ、第１接地ビア１５１Ｂおよび第２接地ビア１５２Ｂに変更したものである。その他の構造は、上述のアンテナ装置１２０と同じであるため、ここでの詳細な説明は繰返さない。 FIG. 9 is a cross-sectional view of another antenna device 120B according to the second modification. The antenna device 120B is obtained by changing the antenna unit 125, the first ground via 151, and the second ground via 152 of the above-mentioned antenna device 120 to the antenna unit 125B, the first ground via 151B, and the second ground via 152B, respectively. .. Since other structures are the same as those of the antenna device 120 described above, the detailed description here will not be repeated.
　アンテナユニット１２５Ｂは、上述のアンテナユニット１２５に対して、第１放射板１２１の接地端部１２１ａが第２放射板１２２の接地端部１２２ａよりもＺ軸の負方向にずれている点が異なる。アンテナユニット１２５Ｂのその他の点は上述のアンテナユニット１２５と同じである。 The antenna unit 125B is different from the above-mentioned antenna unit 125 in that the grounding end 121a of the first radiation plate 121 is displaced in the negative direction of the Z axis from the grounding end 122a of the second radiation plate 122. Other points of the antenna unit 125B are the same as those of the antenna unit 125 described above.
　第１接地ビア１５１Ｂは、第２放射板１２２の接地端部１２２ａには接続されていない。すなわち、第１接地ビア１５１Ｂと第２接地ビア１５２Ｂとは別々に設けられ、互いに共有する部分を有しない。 The first grounding via 151B is not connected to the grounding end 122a of the second radiation plate 122. That is, the first grounded via 151B and the second grounded via 152B are provided separately and do not have a portion shared with each other.
　このように、第１放射板１２１の接地端部１２１ａと第２放射板１２２の接地端部１２２ａとがＺ軸方向にずれており、かつ第１接地ビア１５１Ｂと第２接地ビア１５２Ｂとが別々に設けられるようにしてもよい。 In this way, the grounding end portion 121a of the first radiation plate 121 and the grounding end portion 122a of the second radiation plate 122 are displaced in the Z-axis direction, and the first grounding via 151B and the second grounding via 152B are separate. It may be provided in.
　＜変形例３＞
　上述の変形例２に係る他のアンテナ装置１２０Ｂ（図９参照）においては、第１接地ビア１５１Ｂと第２接地ビア１５２Ｂとが別々に設けられるが、第１接地ビア１５１Ｂと第２接地ビア１５２Ｂとがどちらも各放射板１２１，１２２の面中心に対して同じ側（Ｚ軸負方向側）に設けられる。 <Modification example 3>
In the other antenna device 120B (see FIG. 9) according to the above-described modification 2, the first grounded via 151B and the second grounded via 152B are separately provided, but the first grounded via 151B and the second grounded via 152B are provided separately. Both are provided on the same side (Z-axis negative direction side) with respect to the surface center of each of the radiation plates 121 and 122.
　しかしながら、第１接地ビア１５１Ｂと第２接地ビア１５２Ｂとが各放射板１２１，１２２の面中心に対して互いに異なる側に設けられるようにしてもよい。 However, the first grounding via 151B and the second grounding via 152B may be provided on different sides of the surface centers of the radiation plates 121 and 122.
　図１０は、本変形例３に係るアンテナ装置１２０Ｉの断面図である。アンテナ装置１２０Ｉは、上述のアンテナ装置１２０Ｂの第２接地ビア１５２Ｂを、第２放射板１２２の面中心よりも右側（Ｚ軸正方向側）に移動させたものである。これにより、アンテナ装置１２０Ｉにおいては、第１接地ビア１５１Ｂが第１放射板１２１の面中心よりも左側（Ｚ軸負方向側）に設けられ、第２接地ビア１５２Ｂが第２放射板１２２の面中心よりも右側（Ｚ軸正方向側）に設けられる。このような配置によって、第１放射板１２１の放射方向と第２放射板１２２の放射方向とを互いに異ならせることができる。 FIG. 10 is a cross-sectional view of the antenna device 120I according to the third modification. The antenna device 120I is a device in which the second grounding via 152B of the above-mentioned antenna device 120B is moved to the right side (Z-axis positive direction side) of the surface center of the second radiation plate 122. As a result, in the antenna device 120I, the first grounding via 151B is provided on the left side (Z-axis negative direction side) of the surface center of the first radiation plate 121, and the second grounding via 152B is the surface of the second radiation plate 122. It is provided on the right side (Z-axis positive direction side) of the center. With such an arrangement, the radiation direction of the first radiation plate 121 and the radiation direction of the second radiation plate 122 can be made different from each other.
　＜変形例４＞
　上述の実施の形態においてはデュアルバンド型のアンテナ装置１２０について説明したが、トリプルバンド型のアンテナ装置に変形してもよい。 <Modification example 4>
Although the dual-band type antenna device 120 has been described in the above-described embodiment, it may be transformed into a triple-band type antenna device.
　図１１は、本変形例４によるアンテナ装置１２０Ｃの断面図である。アンテナ装置１２０Ｃにおいては、上述のアンテナ装置１２０のアンテナユニット１２５が、アンテナユニット１２５Ｃに変更されている。 FIG. 11 is a cross-sectional view of the antenna device 120C according to the present modification 4. In the antenna device 120C, the antenna unit 125 of the above-mentioned antenna device 120 is changed to the antenna unit 125C.
　アンテナユニット１２５Ｃは、第１放射板１２１と第２放射板１２２に加えて、放射板１２３を含む。すなわち、アンテナユニット１２５Ｃは、上述のアンテナユニット１２５に対して、放射板１２３が追加されている。なお、アンテナユニット１２５Ｃおよび放射板１２３は、本開示の「アンテナユニット」および「第５放射板」にそれぞれ対応し得る。 The antenna unit 125C includes a radiation plate 123 in addition to the first radiation plate 121 and the second radiation plate 122. That is, in the antenna unit 125C, a radiation plate 123 is added to the above-mentioned antenna unit 125. The antenna unit 125C and the radiation plate 123 can correspond to the “antenna unit” and the “fifth radiation plate” of the present disclosure, respectively.
　放射板１２３は、第１放射板１２１と第２放射板１２２との間に配置される。放射板１２３の給電点ＳＰ３は、第３給電線１４３を介してＲＦＩＣ１１０に接続される。放射板１２３の接地端部（Ｚ軸の負方向側の端部）１２３ａは、第３接地ビア１５３Ｃを介して接地板ＧＮＤ１に接続される。放射板１２３は、第１放射板１２１および第２放射板１２２と同様、片側短絡型パッチアンテナ（板状の逆Ｆアンテナ）である。 The radiation plate 123 is arranged between the first radiation plate 121 and the second radiation plate 122. The feeding point SP3 of the radiation plate 123 is connected to the RFIC 110 via the third feeding line 143. The grounding end portion (end on the negative direction side of the Z axis) 123a of the radiation plate 123 is connected to the grounding plate GND1 via the third grounding via 153C. The radiation plate 123 is a one-sided short-circuit type patch antenna (plate-shaped inverted F antenna) like the first radiation plate 121 and the second radiation plate 122.
　Ｘ軸方向（接地板ＧＮＤ１の法線方向）からアンテナ装置１２０を透視したとき、第１放射板１２１、第２放射板１２２および放射板１２３は、互いに重なり合う部分を有する。第１放射板１２１の接地端部１２１ａ、第２放射板１２２の接地端部１２２ａ、および放射板１２３の接地端部１２３ａは、Ｚ軸方向において揃えられている。なお、第１放射板１２１の接地端部１２１ａは、第１接地ビア１５１Ｃを介して接地板ＧＮＤ１に接続される。第２放射板１２２の接地端部１２２ａは、第２接地ビア１５２Ｃを介して接地板ＧＮＤ１に接続される。 When the antenna device 120 is seen through from the X-axis direction (normal direction of the ground plate GND1), the first radiation plate 121, the second radiation plate 122, and the radiation plate 123 have portions that overlap each other. The grounding end 121a of the first radiation plate 121, the grounding end 122a of the second radiation plate 122, and the grounding end 123a of the radiation plate 123 are aligned in the Z-axis direction. The grounding end portion 121a of the first radiation plate 121 is connected to the grounding plate GND1 via the first grounding via 151C. The grounding end portion 122a of the second radiation plate 122 is connected to the grounding plate GND1 via the second grounding via 152C.
　第１接地ビア１５１Ｃは、第２放射板１２２の接地端部１２２ａおよび放射板１２３の接地端部１２３ａにも接続される。第３接地ビア１５３Ｃは、第２放射板１２２の接地端部１２２ａにも接続される。したがって、第１接地ビア１５１Ｃ、第２接地ビア１５２Ｃおよび第３接地ビア１５３Ｃは、互いに共用される部分を有する。 The first grounding via 151C is also connected to the grounding end 122a of the second radiation plate 122 and the grounding end 123a of the radiation plate 123. The third grounding via 153C is also connected to the grounding end 122a of the second radiation plate 122. Therefore, the first grounded via 151C, the second grounded via 152C, and the third grounded via 153C have a portion shared with each other.
　ＲＦＩＣ１１０からの信号が第３給電線１４３を通って放射板１２３の給電点ＳＰ３に供給されることによって、放射板１２３からは、第１周波数ｆ１（たとえば６０ＧＨｚ）帯域と第２周波数ｆ２（たとえば２８ＧＨｚ）帯域との間の第３周波数ｆ３（たとえば３９ＧＨｚ）帯域の高周波信号が放射される。 By supplying the signal from the RFIC 110 to the feeding point SP3 of the radiation plate 123 through the third feed line 143, the radiation plate 123 has a first frequency f1 (for example, 60 GHz) band and a second frequency f2 (for example, 28 GHz). A high frequency signal in the third frequency f3 (for example, 39 GHz) band between the band and the band is emitted.
　放射板１２３のＺ軸方向の長さＬ３は、第３周波数ｆ３（たとえば３９ＧＨｚ）の高周波信号の波長の４分の１程度に設定される。したがって、放射板１２３のＺ軸方向の長さＬ３は、第１放射板１２１のＺ軸方向の長さＬ１よりも長く、第２放射板１２２のＺ軸方向の長さＬ２よりも短い。 The length L3 of the radiation plate 123 in the Z-axis direction is set to about one-fourth of the wavelength of the high-frequency signal of the third frequency f3 (for example, 39 GHz). Therefore, the length L3 of the radiation plate 123 in the Z-axis direction is longer than the length L1 of the first radiation plate 121 in the Z-axis direction and shorter than the length L2 of the second radiation plate 122 in the Z-axis direction.
　以上のように、異なる周波数を放射する３つの片側短絡型パッチアンテナを重ねたトリプルバンド型のアンテナ装置１２０Ｃとしてもよい。 As described above, the triple band type antenna device 120C in which three one-sided short-circuit type patch antennas radiating different frequencies may be stacked may be used.
　＜変形例５＞
　上述の実施の形態においては、複数のアンテナユニット１２５がＹ軸方向に沿って並べて配置される例について説明した。 <Modification 5>
In the above-described embodiment, an example in which a plurality of antenna units 125 are arranged side by side along the Y-axis direction has been described.
　しかしながら、複数のアンテナユニット１２５の間に、アンテナユニット１２５とは異なるアンテナを配置するようにしてもよい。 However, an antenna different from the antenna unit 125 may be arranged between the plurality of antenna units 125.
　図１２は、本変形例５によるアンテナ装置１２０Ｄの内部をＸ軸方向から透視した図である。アンテナ装置１２０Ｄにおいては、複数のアンテナユニット１２５が、接地板ＧＮＤ１の延在方向と平行なＹ軸方向に沿って並べて配置される。さらに、複数のアンテナユニット１２５の間には、アンテナユニット１２５とは異なるアンテナユニット１２５Ｄがそれぞれ配置される。 FIG. 12 is a perspective view of the inside of the antenna device 120D according to the present modification 5 from the X-axis direction. In the antenna device 120D, a plurality of antenna units 125 are arranged side by side along the Y-axis direction parallel to the extending direction of the ground plate GND1. Further, an antenna unit 125D different from the antenna unit 125 is arranged between the plurality of antenna units 125.
　アンテナユニット１２５の各々は、第１放射板１２１と放射板１２３とを含み、第１周波数ｆ１（たとえば６０ＧＨｚ）帯域と第２周波数ｆ２（たとえば２８ＧＨｚ）帯域との高周波信号を放射するように構成される。 Each of the antenna units 125 includes a first radiation plate 121 and a radiation plate 123, and is configured to emit high frequency signals in the first frequency f1 (for example, 60 GHz) band and the second frequency f2 (for example, 28 GHz) band. To.
　また、アンテナユニット１２５Ｄの各々は、第１放射板１２１と放射板１２３とを含み、第１周波数ｆ１（たとえば６０ＧＨｚ）帯域と第３周波数ｆ３（たとえば３９ＧＨｚ）帯域との高周波信号を放射するように構成される。アンテナユニット１２５Ｄは、上述のアンテナユニット１２５Ｃから、第２放射板１２２および第２給電線１４２を取り除いたものである。アンテナユニット１２５Ｄにおける第１放射板１２１および放射板１２３は、本開示の「第３放射板」および「第４放射板」にそれぞれ対応し得る。 Further, each of the antenna units 125D includes the first radiation plate 121 and the radiation plate 123, and emits high frequency signals of the first frequency f1 (for example, 60 GHz) band and the third frequency f3 (for example, 39 GHz) band. It is composed. The antenna unit 125D is obtained by removing the second radiation plate 122 and the second feeder line 142 from the above-mentioned antenna unit 125C. The first radiation plate 121 and the radiation plate 123 in the antenna unit 125D can correspond to the "third radiation plate" and the "fourth radiation plate" of the present disclosure, respectively.
　アンテナユニット１２５の第１放射板１２１および第２放射板１２２の接地端部、並びに、アンテナユニット１２５Ｄの第１放射板１２１および放射板１２３の接地端部は、Ｚ軸方向において揃うように配置される。 The grounding ends of the first radiation plate 121 and the second radiation plate 122 of the antenna unit 125, and the grounding ends of the first radiation plate 121 and the radiation plate 123 of the antenna unit 125D are arranged so as to be aligned in the Z-axis direction. Radiation.
　以上のように、第１周波数ｆ１と第２周波数ｆ２とに対応可能なデュアルバンド型のアンテナユニット１２５と、第１周波数ｆ１と第３周波数ｆ３とに対応可能なデュアルバンド型のアンテナユニット１２５Ｄとを、Ｙ軸方向に交互に配置するようにしてもよい。これにより、第１周波数ｆ１、第２周波数ｆ２および第３周波数ｆ３に対応可能なトリプルバンド型のアレイアンテナを形成することができる。 As described above, the dual band type antenna unit 125 that can correspond to the first frequency f1 and the second frequency f2, and the dual band type antenna unit 125D that can correspond to the first frequency f1 and the third frequency f3. May be arranged alternately in the Y-axis direction. This makes it possible to form a triple band type array antenna that can handle the first frequency f1, the second frequency f2, and the third frequency f3.
　特に、アンテナ装置１２０Ｄにおいては、第１周波数ｆ１、第２周波数ｆ２および第３周波数ｆ３のうち、最も高い第１周波数ｆ１の信号を放射する第１放射板１２１が、アンテナユニット１２５およびアンテナユニット１２５Ｄの双方に含まれる。そのため、最も高い第１周波数ｆ１に対応する第１放射板１２１の配置間隔を、他の第２放射板１２２、放射板１２３の配置間隔よりも小さくすることができる。これにより、第１周波数ｆ１の信号が放射される際のサイドローブレベルを低減することができる。 In particular, in the antenna device 120D, the first radiation plate 121 that emits the signal of the highest first frequency f1 among the first frequency f1, the second frequency f2, and the third frequency f3 is the antenna unit 125 and the antenna unit 125D. Included in both. Therefore, the arrangement interval of the first radiation plate 121 corresponding to the highest first frequency f1 can be made smaller than the arrangement interval of the other second radiation plate 122 and the radiation plate 123. As a result, the sidelobe level when the signal of the first frequency f1 is radiated can be reduced.
　一般的に、アレイアンテナを形成する場合、隣接するアンテナの面中心同士の距離を波長の２分の１程度にすることが望ましく、面中心同士の距離が波長の２分の１よりも大きいほど、サイドローブレベルが悪化することが懸念される。この点を踏まえ、アンテナ装置１２０Ｄにおいては、最も波長の短い第１周波数ｆ１の信号を放射する第１放射板１２１をアンテナユニット１２５およびアンテナユニット１２５Ｄの双方に含めることで、第１放射板１２１の配置間隔を小さくしている。これにより、第１周波数ｆ１の信号が放射される際のサイドローブレベルを低減することができる。 Generally, when forming an array antenna, it is desirable that the distance between the surface centers of adjacent antennas is about half of the wavelength, and the distance between the surface centers is larger than one half of the wavelength. , There is concern that the side lobe level will deteriorate. Based on this point, in the antenna device 120D, by including the first radiation plate 121 that emits the signal of the first frequency f1 having the shortest wavelength in both the antenna unit 125 and the antenna unit 125D, the first radiation plate 121 The placement interval is reduced. As a result, the sidelobe level when the signal of the first frequency f1 is radiated can be reduced.
　図１３は、本変形例５による他のアンテナ装置１２０Ｅの内部をＸ軸方向から透視した図である。アンテナ装置１２０Ｅにおいては、複数のアンテナユニット１２５Ｃが、接地板ＧＮＤ１の延在方向と平行なＹ軸方向に沿って並べて配置される。さらに、複数のアンテナユニット１２５Ｃの間には、アンテナユニット１２５Ｃとは異なるアンテナ１２５Ｅが配置される。 FIG. 13 is a perspective view of the inside of the other antenna device 120E according to the present modification 5 from the X-axis direction. In the antenna device 120E, a plurality of antenna units 125C are arranged side by side along the Y-axis direction parallel to the extending direction of the ground plate GND1. Further, an antenna 125E different from the antenna unit 125C is arranged between the plurality of antenna units 125C.
　アンテナユニット１２５Ｃの各々は、上述の図１１に示したように、第１放射板１２１、第２放射板１２２および放射板１２３を含み、第１周波数ｆ１、第２周波数ｆ２および第３周波数ｆ３に対応可能なトリプルバンド型のアンテナである。 As shown in FIG. 11 above, each of the antenna units 125C includes a first radiation plate 121, a second radiation plate 122, and a radiation plate 123, and has a first frequency f1, a second frequency f2, and a third frequency f3. It is a compatible triple band type antenna.
　また、アンテナ１２５Ｅの各々には、第１周波数ｆ１帯域の高周波信号を放射する第１放射板１２１が配置される。アンテナ１２５Ｅは、上述のアンテナユニット１２５から、第２放射板１２２および第２給電線１４２を取り除いたものである。アンテナ１２５Ｅにおける第１放射板１２１は、本開示の「第３放射板」に対応し得る。 Further, a first radiation plate 121 that emits a high frequency signal in the first frequency f1 band is arranged in each of the antennas 125E. The antenna 125E is obtained by removing the second radiation plate 122 and the second feeder line 142 from the above-mentioned antenna unit 125. The first radiation plate 121 in the antenna 125E can correspond to the "third radiation plate" of the present disclosure.
　アンテナユニット１２５Ｃの第１放射板１２１、第２放射板１２２および放射板１２３の接地端部、並びに、アンテナ１２５Ｅの第１放射板１２１の接地端部は、Ｚ軸方向において揃うように配置される。 The ground ends of the first radiation plate 121, the second radiation plate 122, and the radiation plate 123 of the antenna unit 125C, and the ground ends of the first radiation plate 121 of the antenna 125E are arranged so as to be aligned in the Z-axis direction. ..
　以上のように、第１周波数ｆ１、第２周波数ｆ２および第３周波数ｆ３に対応可能なトリプルバンド型のアンテナユニット１２５Ｃと、第１周波数ｆ１に対応可能なシングルバンド型のアンテナ１２５Ｅとを、Ｙ軸方向に交互に配置するようにしてもよい。これにより、第１周波数ｆ１、第２周波数ｆ２および第３周波数ｆ３に対応可能なトリプルバンド型のアレイアンテナを形成することができる。 As described above, the triple band type antenna unit 125C corresponding to the first frequency f1, the second frequency f2 and the third frequency f3, and the single band type antenna 125E corresponding to the first frequency f1 are Y. It may be arranged alternately in the axial direction. This makes it possible to form a triple band type array antenna that can handle the first frequency f1, the second frequency f2, and the third frequency f3.
　また、アンテナ装置１２０Ｅにおいても、上述のアンテナ装置１２０Ｄと同様に、第１周波数ｆ１、第２周波数ｆ２および第３周波数ｆ３のうち、最も高い第１周波数ｆ１の信号を放射する第１放射板１２１が、アンテナユニット１２５Ｃおよびアンテナ１２５Ｅの双方に含まれる。これにより、最も波長が短い第１周波数ｆ１の信号を放射する第１放射板１２１の配置間隔を短くすることができる。そのため、第１周波数ｆ１の信号が放射される際のサイドローブレベルを低減することができる。 Further, also in the antenna device 120E, similarly to the above-mentioned antenna device 120D, the first radiation plate 121 that emits the signal of the highest first frequency f1 among the first frequency f1, the second frequency f2, and the third frequency f3. Is included in both the antenna unit 125C and the antenna 125E. As a result, the arrangement interval of the first radiation plate 121 that emits the signal of the first frequency f1 having the shortest wavelength can be shortened. Therefore, the sidelobe level when the signal of the first frequency f1 is radiated can be reduced.
　＜変形例６＞
　上述の実施の形態においては片側短絡型パッチアンテナを設ける例について説明したが、片側短絡型パッチアンテナに加えて通常のパッチアンテナを設けるようにしてもよい。 <Modification 6>
In the above-described embodiment, an example in which a one-sided short-circuit type patch antenna is provided has been described, but a normal patch antenna may be provided in addition to the one-sided short-circuit type patch antenna.
　図１４は、本変形例６によるアンテナ装置１２０Ｆの内部をＸ軸方向から透視した図である。アンテナ装置１２０Ｆは、上述のアンテナ装置１２０Ｅに対して、複数のアンテナユニット１２８，１２８Ｄを追加したものである。その他の構造は、上述のアンテナ装置１２０Ｅと同じであるため、ここでの詳細な説明は繰返さない。 FIG. 14 is a perspective view of the inside of the antenna device 120F according to the present modification 6 from the X-axis direction. The antenna device 120F is obtained by adding a plurality of antenna units 128 and 128D to the above-mentioned antenna device 120E. Since other structures are the same as those of the antenna device 120E described above, the detailed description here will not be repeated.
　アンテナユニット１２８とアンテナユニット１２８Ｄとは、Ｙ軸方向に交互に並べられた状態で、アンテナユニット１２５，１２５Ｄに対してＺ軸の負方向側に隣接して配置される。なお、アンテナユニット１２８，１２８Ｄは、本開示の「放射電極」に対応し得る。 The antenna unit 128 and the antenna unit 128D are arranged alternately in the Y-axis direction and adjacent to the antenna units 125 and 125D on the negative direction side of the Z-axis. The antenna units 128 and 128D can correspond to the "radiating electrode" of the present disclosure.
　アンテナユニット１２８は、第１周波数ｆ１および第２周波数ｆ２に対応可能なデュアルバンド型のアンテナである。具体的には、アンテナユニット１２８は、第１周波数ｆ１帯域の高周波信号を放射する放射板１２６と、第２周波数ｆ２帯域の高周波信号を放射する放射板１２７とを含む。放射板１２６，１２７は、どちらも、接地板ＧＮＤ１に対向して配置され、接地板ＧＮＤ１には接続されない通常のパッチアンテナである。言い換えれば、アンテナユニット１２８は、片側短絡型パッチアンテナである上述のアンテナユニット１２５を、通常のパッチアンテナのユニットに変更したものである。 The antenna unit 128 is a dual band type antenna that can support the first frequency f1 and the second frequency f2. Specifically, the antenna unit 128 includes a radiation plate 126 that emits a high frequency signal in the first frequency f1 band and a radiation plate 127 that emits a high frequency signal in the second frequency f2 band. Both the radiation plates 126 and 127 are ordinary patch antennas that are arranged to face the ground plate GND1 and are not connected to the ground plate GND1. In other words, the antenna unit 128 is a modification of the above-mentioned antenna unit 125, which is a one-sided short-circuit type patch antenna, into a normal patch antenna unit.
　アンテナユニット１２８Ｄは、第１周波数ｆ１および第３周波数ｆ３に対応可能なデュアルバンド型のアンテナである。具体的には、アンテナユニット１２８Ｄは、第１周波数ｆ１帯域の高周波信号を放射する放射板１２６と、第３周波数ｆ３帯域の高周波信号を放射する放射板１２９とを含む。放射板１２６，１２９は、どちらも、接地板ＧＮＤ１に対向して配置され、接地板ＧＮＤ１には接続されない通常のパッチアンテナである。言い換えれば、アンテナユニット１２８Ｄは、片側短絡型パッチアンテナである上述のアンテナユニット１２５Ｄを、通常のパッチアンテナのユニットに変更したものである。 The antenna unit 128D is a dual band type antenna that can support the first frequency f1 and the third frequency f3. Specifically, the antenna unit 128D includes a radiation plate 126 that emits a high frequency signal in the first frequency f1 band and a radiation plate 129 that emits a high frequency signal in the third frequency f3 band. Both the radiation plates 126 and 129 are ordinary patch antennas that are arranged to face the ground plate GND1 and are not connected to the ground plate GND1. In other words, the antenna unit 128D is a modification of the above-mentioned antenna unit 125D, which is a one-sided short-circuit type patch antenna, into a normal patch antenna unit.
　このように、片側短絡型パッチアンテナのユニットであるアンテナユニット１２５，１２５Ｄに加えて、通常のパッチアンテナのユニットであるアンテナユニット１２８，１２８Ｄを追加することによって、Ｘ軸の正方向に放射される信号強度を増加させることができる。具体的には、片側短絡型パッチアンテナであるアンテナユニット１２５，１２５Ｄに含まれる放射板の接地端部は、いずれも、アンテナユニット１２８，１２８Ｄが設けられる側、すなわちＺ軸の負方向側に配置されている。この場合、アンテナユニット１２５，１２５Ｄからは、Ｘ軸の正方向よりもＺ軸の正方向側に傾いた方向に強い信号が放射される。これに対し、通常のパッチアンテナであるアンテナユニット１２８，１２８Ｄからは、Ｘ軸の正方向に強い信号が放射される。これにより、より広い範囲に強い電波を放射することが可能になる。 In this way, by adding the antenna units 128 and 128D, which are normal patch antenna units, in addition to the antenna units 125 and 125D, which are single-sided short-circuit type patch antenna units, the antenna units are radiated in the positive direction of the X-axis. The signal strength can be increased. Specifically, the grounding ends of the radiation plates included in the antenna units 125 and 125D, which are short-circuit type patch antennas on one side, are all arranged on the side where the antenna units 128 and 128D are provided, that is, on the negative direction side of the Z axis. Has been done. In this case, strong signals are emitted from the antenna units 125 and 125D in a direction inclined toward the positive direction of the Z axis rather than the positive direction of the X axis. On the other hand, strong signals are emitted from the antenna units 128 and 128D, which are ordinary patch antennas, in the positive direction of the X-axis. This makes it possible to radiate strong radio waves over a wider range.
　図１５は、本変形例６による他のアンテナ装置１２０Ｇの内部をＸ軸方向から透視した図である。アンテナ装置１２０Ｇは、上述のアンテナ装置１２０Ｆに対して、アンテナユニット１２８，１２８ＤのＺ軸の負方向側にも、アンテナユニット１２５，１２５Ｄを追加したものである。その他の構造は、上述のアンテナ装置１２０Ｆと同じであるため、ここでの詳細な説明は繰返さない。 FIG. 15 is a perspective view of the inside of the other antenna device 120G according to the present modification 6 from the X-axis direction. The antenna device 120G is obtained by adding the antenna units 125 and 125D to the above-mentioned antenna device 120F on the negative direction side of the Z axis of the antenna units 128 and 128D. Since the other structures are the same as those of the antenna device 120F described above, the detailed description here will not be repeated.
　図１５に示すように、アンテナ装置１２０Ｇにおいては、アンテナユニット１２５，１２５Ｄが、アンテナユニット１２８，１２８Ｄを挟んで、アンテナユニット１２８，１２８ＤのＺ軸の正方向側と負方向側の両方に設けられる。なお、アンテナユニット１２８，１２８ＤのＺ軸の正方向側に設けられるアンテナユニット１２５，１２５Ｄは、本開示の「第１のアンテナユニット」に対応し得る。アンテナユニット１２８，１２８ＤのＺ軸の負方向側に設けられるアンテナユニット１２５，１２５Ｄは、本開示の「第２のアンテナユニット」に対応し得る。 As shown in FIG. 15, in the antenna device 120G, the antenna units 125 and 125D are provided on both the positive direction side and the negative direction side of the Z axis of the antenna units 128 and 128D with the antenna units 128 and 128D interposed therebetween. .. The antenna units 125 and 125D provided on the positive direction side of the Z axis of the antenna units 128 and 128D can correspond to the "first antenna unit" of the present disclosure. The antenna units 125 and 125D provided on the negative side of the Z axis of the antenna units 128 and 128D can correspond to the "second antenna unit" of the present disclosure.
　アンテナユニット１２８，１２８ＤのＺ軸の正方向側に設けられるアンテナユニット１２５，１２５Ｄに含まれる放射板の接地端部は、アンテナユニット１２８，１２８Ｄが設けられる側（Ｚ軸の負方向側）に配置されている。 The grounding end of the radiation plate included in the antenna units 125 and 125D provided on the positive direction side of the Z axis of the antenna units 128 and 128D is arranged on the side where the antenna units 128 and 128D are provided (negative direction side of the Z axis). Has been done.
　また、アンテナユニット１２８，１２８ＤのＺ軸の負方向側に設けられるアンテナユニット１２５，１２５Ｄに含まれる放射板の接地端部も、アンテナユニット１２８，１２８Ｄが設けられる側（Ｚ軸の正方向側）に配置されている。 Further, the grounding end of the radiation plate included in the antenna units 125 and 125D provided on the negative side of the Z axis of the antenna units 128 and 128D is also the side on which the antenna units 128 and 128D are provided (the positive side of the Z axis). It is located in.
　このように、通常のパッチアンテナであるアンテナユニット１２８，１２８Ｄの両側に、片側短絡型パッチアンテナであるアンテナユニット１２５，１２５Ｄを配置することによって、より広い範囲に強い電波を放射することが可能になる。具体的には、Ｘ軸の正方向よりもＺ軸の正方向側に傾いた方向、Ｘ軸の正方向、およびＸ軸の正方向よりもＺ軸の負方向側に傾いた方向に、より強い電波を放射することができる。 In this way, by arranging the antenna units 125 and 125D, which are short-circuited one-sided patch antennas, on both sides of the antenna units 128 and 128D, which are normal patch antennas, it is possible to radiate strong radio waves over a wider range. Become. Specifically, the direction tilted toward the positive side of the Z axis from the positive direction of the X axis, the positive direction of the X axis, and the direction tilted toward the negative direction of the Z axis from the positive direction of the X axis. It can emit strong radio waves.
　なお、上述の図１４，図１５においては、片側短絡型パッチアンテナに加えて通常のパッチアンテナが追加される例を示したが、追加されるアンテナは、通常のパッチアンテナに限定されない。たとえば、通常のパッチアンテナに代えてあるいは加えて、ダイポールアンテナが追加されるようにしてもよい。 Note that, in FIGS. 14 and 15 described above, an example in which a normal patch antenna is added in addition to the one-sided short-circuit type patch antenna is shown, but the added antenna is not limited to the normal patch antenna. For example, a dipole antenna may be added in place of or in addition to the normal patch antenna.
　今回開示された実施の形態は、すべての点で例示であって制限的なものではないと考えられるべきである。本開示の範囲は、上記した実施の形態の説明ではなくて請求の範囲によって示され、請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。 The embodiments disclosed this time should be considered to be exemplary in all respects and not restrictive. The scope of the present disclosure is indicated by the claims rather than the description of the embodiments described above, and is intended to include all modifications within the meaning and scope equivalent to the claims.
　１０　通信装置、１１　筐体、２０　実装基板、２１　主面、２２　側面、１００　アンテナモジュール、１１１Ａ～１１１Ｈ，１１３Ａ～１１３Ｈ，１１７Ａ，１１７Ｂ　スイッチ、１１２ＡＲ～１１２ＨＲ　ローノイズアンプ、１１２ＡＴ～１１２ＨＴ　パワーアンプ、１１４Ａ，１１４Ｄ，１１４Ｅ，１１４Ｈ　減衰器、１１５Ａ，１１５Ｄ，１１５Ｅ，１１５Ｈ　移相器、１１６Ａ，１１６Ｂ　分波器、１１８Ａ，１１８Ｂ　ミキサ、１１９Ａ，１１９Ｂ　増幅回路、１２０，１２０Ａ～１２０Ｉ　アンテナ装置、１２１　第１放射板、１２１ａ，１２２ａ，１２３ａ　接地端部、１２２　第２放射板、１２３，１２６，１２７，１２９　放射板、１２５，１２５Ａ～１２５Ｄ，１２８，１２８Ｄ　アンテナユニット、１２５Ｅ　アンテナ、１３０，１３０Ｈ　誘電体、１３１　内側表面、１３２　外側表面、１４１　第１給電線、１４２　第２給電線、１４３　第３給電線、１５１，１５１Ａ，１５１Ｂ，１５１Ｃ　第１接地ビア、１５２，１５２Ｂ，１５２Ｃ　第２接地ビア、１５３Ｃ　第３接地ビア、１６０　接続線、ＧＮＤ１，ＧＮＤ２　接地板、ＳＰ１，ＳＰ２，ＳＰ３　給電点。 10 communication device, 11 housing, 20 mounting board, 21 main surface, 22 side surface, 100 antenna module, 111A to 111H, 113A to 113H, 117A, 117B switch, 112AR to 112HR low noise amplifier, 112AT to 112HT power amplifier, 114A, 114D, 114E, 114H attenuator, 115A, 115D, 115E, 115H phase shifter, 116A, 116B demultiplexer, 118A, 118B mixer, 119A, 119B amplification circuit, 120, 120A to 120I antenna device, 121 first radiation plate , 121a, 122a, 123a Grounding end, 122 second radiator plate, 123,126,127,129 radiator plate, 125,125A to 125D, 128,128D antenna unit, 125E antenna, 130,130H dielectric, 131 inner surface , 132 outer surface, 141 1st feed line, 142 2nd feed line, 143 3rd feed line, 151, 151A, 151B, 151C 1st ground via, 152, 152B, 152C 2nd ground via, 153C 3rd ground via , 160 connection line, GND1, GND2 ground plate, SP1, SP2, SP3 feed point.

Claims (16)

  1. 　アンテナ装置であって、
    　平板状の接地板と、
    　前記接地板と対向する平板状の第１放射板と前記接地板と対向する平板状の第２放射板とを有するアンテナユニットと、
    　前記第１放射板の給電点に接続される第１給電線と、
    　前記第１給電線とは別に設けられ、前記第２放射板の給電点に接続される第２給電線とを備え、
    　前記第１放射板は、前記接地板に接続される第１接地端部を有し、
    　前記第２放射板は、前記接地板に接続される第２接地端部を有し、
    　前記接地板の法線方向から前記アンテナ装置を透視したとき、前記第１放射板と前記第２放射板とは互いに重なり合う部分を有する、アンテナ装置。     It is an antenna device
    A flat ground plate and
    An antenna unit having a flat plate-shaped first radiation plate facing the ground plate and a flat plate-shaped second radiation plate facing the ground plate, and
    The first feeder connected to the feeder point of the first radiation plate and
    A second feeder line provided separately from the first feeder and connected to a feeder point of the second radiation plate is provided.
    The first radiation plate has a first grounding end connected to the grounding plate.
    The second radiation plate has a second grounding end connected to the grounding plate.
    An antenna device having a portion in which the first radiation plate and the second radiation plate overlap each other when the antenna device is viewed through from the normal direction of the ground plate.
  2. 　前記アンテナ装置は、
    　　前記第１接地端部と前記接地板とを接続する第１接地線と、
    　　前記第２接地端部と前記接地板とを接続する第２接地線とをさらに備え、
    　前記接地板の法線方向から前記アンテナ装置を透視したとき、前記第１接地端部と前記第２接地端部とは互いに重なり合う部分を有する、請求項１に記載のアンテナ装置。     The antenna device is
    A first grounding wire connecting the first grounding end and the grounding plate,
    A second grounding wire for connecting the second grounding end and the grounding plate is further provided.
    The antenna device according to claim 1, wherein the first grounding end portion and the second grounding end portion have a portion that overlaps with each other when the antenna device is viewed through from the normal direction of the grounding plate.
  3. 　前記第１接地線と前記第２接地線とは、互いに共用される部分を有する、請求項２に記載のアンテナ装置。 The antenna device according to claim 2, wherein the first ground wire and the second ground wire have a portion shared with each other.
  4. 　前記第１放射板は、前記第２放射板よりも前記接地板から離れた位置に配置され、
    　前記第１接地端部と前記第２接地端部とは、前記第１接地線の一部によって直線的に接続される、請求項２または３に記載のアンテナ装置。     The first radiation plate is arranged at a position farther from the ground plate than the second radiation plate.
    The antenna device according to claim 2 or 3, wherein the first grounding end portion and the second grounding end portion are linearly connected by a part of the first grounding wire.
  5. 　前記アンテナ装置は、複数の前記アンテナユニットを備え、
    　複数の前記アンテナユニットは、前記接地板の延在方向と平行な方向に沿って並べて配置される、請求項１～４のいずれかに記載のアンテナ装置。     The antenna device includes a plurality of the antenna units.
    The antenna device according to any one of claims 1 to 4, wherein the plurality of antenna units are arranged side by side along a direction parallel to the extending direction of the ground plate.
  6. 　前記アンテナ装置は、複数の前記アンテナユニットの間に配置される第３放射板をさらに備える、請求項１～５のいずれかに記載のアンテナ装置。 The antenna device according to any one of claims 1 to 5, further comprising a third radiation plate arranged between the plurality of antenna units.
  7. 　前記第１放射板は、第１周波数の信号を放射し、
    　前記第２放射板は、前記第１周波数よりも低い第２周波数の信号を放射し、
    　前記第３放射板は、前記接地板に接続される接地端部を有し、前記第１周波数の信号を放射する、請求項６に記載のアンテナ装置。     The first radiation plate emits a signal of the first frequency,
    The second radiation plate emits a signal having a second frequency lower than that of the first frequency.
    The antenna device according to claim 6, wherein the third radiation plate has a grounding end portion connected to the grounding plate and emits a signal of the first frequency.
  8. 　前記アンテナ装置は、前記接地板の法線方向から前記アンテナ装置を透視したとき、前記第３放射板と重なり合う部分を有する第４放射板をさらに備える、請求項６に記載のアンテナ装置。 The antenna device according to claim 6, wherein the antenna device further includes a fourth radiation plate having a portion that overlaps with the third radiation plate when the antenna device is viewed through from the normal direction of the ground plate.
  9. 　前記第１放射板は、第１周波数の信号を放射し、
    　前記第２放射板は、前記第１周波数よりも低い第２周波数の信号を放射し、
    　前記第３放射板は、前記接地板に接続される接地端部を有し、前記第１周波数の信号を放射し、
    　前記第４放射板は、前記接地板に接続される端部を有し、前記第１周波数よりも低く、かつ前記第２周波数とは異なる第３周波数の信号を放射する、請求項８に記載のアンテナ装置。     The first radiation plate emits a signal of the first frequency,
    The second radiation plate emits a signal having a second frequency lower than that of the first frequency.
    The third radiation plate has a grounding end connected to the grounding plate and emits a signal of the first frequency.
    8. The fourth radiation plate has an end connected to the ground plate and emits a signal having a third frequency lower than the first frequency and different from the second frequency. Antenna device.
  10. 　前記アンテナ装置は、前記第１放射板と前記第２放射板との間の位置に配置される第５放射板をさらに備える、請求項１～９のいずれかに記載のアンテナ装置。 The antenna device according to any one of claims 1 to 9, further comprising a fifth radiation plate arranged at a position between the first radiation plate and the second radiation plate.
  11. 　前記アンテナ装置は、前記アンテナユニットに対して前記接地板の延在方向に隣接して配置される放射電極をさらに備える、請求項１～１０のいずれかに記載のアンテナ装置。 The antenna device according to any one of claims 1 to 10, further comprising a radiation electrode arranged adjacent to the antenna unit in the extending direction of the ground plate.
  12. 　前記アンテナユニットにおける前記第１接地端部と前記第２接地端部とは、前記放射電極が設けられる側に配置される、請求項１１に記載のアンテナ装置。 The antenna device according to claim 11, wherein the first grounded end portion and the second grounded end portion of the antenna unit are arranged on the side where the radiation electrode is provided.
  13. 　前記アンテナユニットは、
    　　前記放射電極の一方の側に配置される第１の前記アンテナユニットと、
    　　前記放射電極の他方の側に配置される第２の前記アンテナユニットとを含む、請求項１１または１２に記載のアンテナ装置。     The antenna unit is
    With the first antenna unit arranged on one side of the radiation electrode,
    The antenna device according to claim 11 or 12, further comprising a second antenna unit located on the other side of the radiation electrode.
  14. 　第１の前記アンテナユニットにおける前記第１接地端部と前記第２接地端部とは、前記放射電極が設けられる側に配置され、
    　第２の前記アンテナユニットにおける前記第１接地端部と前記第２接地端部とは、前記放射電極が設けられる側に配置される、請求項１３に記載のアンテナ装置。     The first grounded end portion and the second grounded end portion of the first antenna unit are arranged on the side where the radiation electrode is provided.
    The antenna device according to claim 13, wherein the first grounded end portion and the second grounded end portion of the second antenna unit are arranged on the side where the radiation electrode is provided.
  15. 　請求項１～１４のいずれかに記載のアンテナ装置と、
    　前記アンテナ装置に高周波信号を供給するように構成された給電回路とを備える、アンテナモジュール。     The antenna device according to any one of claims 1 to 14,
    An antenna module including a feeding circuit configured to supply a high frequency signal to the antenna device.
  16. 　請求項１５に記載のアンテナモジュールを搭載した、通信装置。 A communication device equipped with the antenna module according to claim 15.
PCT/JP2020/021683 2019-07-29 2020-06-02 Antenna device, antenna module, and communication device WO2021019899A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019138713 2019-07-29
JP2019-138713 2019-07-29

Publications (1)

Publication Number Publication Date
WO2021019899A1 true WO2021019899A1 (en) 2021-02-04

Family

ID=74228665

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/021683 WO2021019899A1 (en) 2019-07-29 2020-06-02 Antenna device, antenna module, and communication device

Country Status (1)

Country Link
WO (1) WO2021019899A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2147744A (en) * 1983-10-04 1985-05-15 Dassault Electronique A radiating device with an improved microstrip structure and its application to an adaptable antenna
JPS63144606A (en) * 1986-11-29 1988-06-16 ノーザン　テレコム　リミテッド Circularly polarized wave antenna
JPS63131408U (en) * 1987-02-18 1988-08-29
JPH05211406A (en) * 1991-07-01 1993-08-20 Ball Corp Stacked microstrip antenna for multi- frequency use
JPH11150415A (en) * 1997-11-17 1999-06-02 Toshiba Corp Multiple frequency antenna
JP2001028511A (en) * 1999-07-13 2001-01-30 Hitachi Ltd Planar antenna and applying device using the same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2147744A (en) * 1983-10-04 1985-05-15 Dassault Electronique A radiating device with an improved microstrip structure and its application to an adaptable antenna
JPS63144606A (en) * 1986-11-29 1988-06-16 ノーザン　テレコム　リミテッド Circularly polarized wave antenna
JPS63131408U (en) * 1987-02-18 1988-08-29
JPH05211406A (en) * 1991-07-01 1993-08-20 Ball Corp Stacked microstrip antenna for multi- frequency use
JPH11150415A (en) * 1997-11-17 1999-06-02 Toshiba Corp Multiple frequency antenna
JP2001028511A (en) * 1999-07-13 2001-01-30 Hitachi Ltd Planar antenna and applying device using the same

Similar Documents

Publication Publication Date Title
WO2020261806A1 (en) Antenna module and communication device equipped with same
JP7047918B2 (en) Antenna module
US11631936B2 (en) Antenna device
WO2019163419A1 (en) Antenna module and communication device installed therein
WO2020145392A1 (en) Antenna module and communication device with same mounted thereon
WO2022185917A1 (en) Antenna module and communication device equipped with same
WO2020261920A1 (en) Flexible substrate and antenna module provided with flexible substrate
US11539122B2 (en) Antenna module and communication unit provided with the same
US20220181794A1 (en) Antenna device, antenna module, and communication device
JP6798656B1 (en) Antenna module and communication device equipped with it
WO2021019899A1 (en) Antenna device, antenna module, and communication device
WO2022130877A1 (en) Antenna module and communication device equipped with same
WO2021039075A1 (en) Antenna module, communication device having antenna module mounted thereon, and circuit board
WO2020217971A1 (en) Antenna module, and communication device equipped with same
WO2022185874A1 (en) Antenna module and communication device equipped with same
WO2023210118A1 (en) Antenna module
WO2023037806A1 (en) Antenna module and communication device having same mounted thereon
WO2023157450A1 (en) Antenna module, and communication device having same mounted thereon
WO2023037805A1 (en) Antenna module and communication device equipped with same
WO2023214473A1 (en) Transmission line, and antenna module and communication device that include same
WO2023171115A1 (en) Antenna device and communication device including same
WO2023032581A1 (en) Antenna module and communication device equipped with same
WO2022004111A1 (en) Antenna module and communication device equipped with same
WO2024034188A1 (en) Antenna module and communication device equipped with same
WO2024004283A1 (en) Antenna module, and communication device having same mounted thereon

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20847506

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20847506

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP