WO2006098054A1 - 平面アンテナモジュール、トリプレート型平面アレーアンテナ、およびトリプレート線路-導波管変換器 - Google Patents
平面アンテナモジュール、トリプレート型平面アレーアンテナ、およびトリプレート線路-導波管変換器 Download PDFInfo
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- WO2006098054A1 WO2006098054A1 PCT/JP2005/019584 JP2005019584W WO2006098054A1 WO 2006098054 A1 WO2006098054 A1 WO 2006098054A1 JP 2005019584 W JP2005019584 W JP 2005019584W WO 2006098054 A1 WO2006098054 A1 WO 2006098054A1
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- ground conductor
- antenna
- waveguide
- dielectric
- conductor
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0025—Modular arrays
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
- H01P5/10—Coupling devices of the waveguide type for linking dissimilar lines or devices for coupling balanced with unbalanced lines or devices
- H01P5/107—Hollow-waveguide/strip-line transitions
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/065—Patch antenna array
Definitions
- Planar antenna module triplate type planar array antenna, and triplate line single waveguide converter
- the present invention relates to a planar array antenna used for millimeter wave band transmission / reception, an antenna module using the same, and a triplate line-waveguide converter.
- the input / output ports of the plurality of antenna groups and millimeter wave circuits are connected with low loss.
- Such a method is disclosed, for example, in JP-A-2002-299949.
- the contact surface accuracy of the isolation part of the waveguide groove (8) with the fourth ground conductor (14) is maintained with high accuracy, and Even if the fourth ground conductor (14) and the ninth ground conductor (19) are manufactured by cutting products so as to minimize the surface roughness of the waveguide groove (8), the unit length per lcm Loss of about 0.3 dB.
- the input / output port of the antenna group that is, the third waveguide opening (65) formed in the fourth ground conductor (14) and the millimeter wave circuit input / output port, that is, the ninth ground conductor (19).
- this type of antenna has a horizontal gap between the ground conductor and the slot plate in addition to the energy component directly radiated from the slot to the external space when the patch is excited from the feed line. A component propagating in the direction is generated. Since this lateral component eventually radiates into the space from the adjacent slot, it is known that the influence caused by the phase relationship with the energy component directly radiated from the slot to the external space has an effect on the array antenna gain.
- the array antenna gain shows the maximum gain and efficiency as shown in Fig. 13 at a special element arrangement interval, and a high gain and high efficiency antenna can be realized.
- a film substrate 4 in which the stripline conductor 3 is formed on the surface of the ground conductor 1 via the dielectric 2a is stacked and arranged. Furthermore, an upper ground conductor 5 is arranged on the surface via a dielectric 2b to constitute a triplate line.
- the ground conductor 1 is provided with a through-hole having the same dimensions as the inside dimension of the waveguide, and is equivalent to the dielectric 2a for holding the film substrate 4.
- a metal spacer portion 7a having a thickness of 5 mm is provided, and the film substrate 140 is sandwiched between the metal spacer portion 7b and the metal spacer portion 7b having the same dimensions as that of the metal spacer portion 7a.
- An upper ground conductor 5 having a through-hole having the same dimensions as the inside of the wave tube is provided with a through-hole provided in the ground conductor 1 and an inner wall of the metal spacer 7a '7b and the upper ground conductor 5
- the tri-plate line waveguide converter is configured by arranging the short-circuit metal plate 180 so as to close the through-holes provided in the ground conductor 5 and arranging the through-holes provided in the ground conductor 5 to coincide with each other. ing.
- the loss is wide and low in the desired frequency band.
- a triplate line waveguide converter having the following characteristics can be realized.
- the stripline conductor 3 into the waveguide is short because the wavelength is short in the millimeter wave band of about 76 GHz. Even if the mechanical dimensional accuracy of the insertion length A or short-circuit distance L is slightly deteriorated, the reflection characteristics deteriorate, and it is essential to select a highly accurate processing method and assembly structure. Also, as shown in Fig. 23 (c), in order to adjust the short-circuit distance L, there is a through-hole with the same size as the waveguide inner size as shown in Fig. 24 (c). In some cases, the short-circuit distance adjusting metal plate 190 is required, and the cost increases due to an increase in the number of parts.
- An object of the present invention is to provide an inexpensive planar antenna module that can reduce loss, reduce characteristic changes due to assembly errors, and improve the stability of frequency characteristics.
- Another object of the present invention is to provide a triplate type planar array that can realize equivalent antenna characteristics between the antenna at the array end of an antenna array configured by arranging a plurality of small antennas and the antenna at the center of the array. It is to provide an antenna.
- Still another object of the present invention is to eliminate the need for the short-circuit metal plate 180 and the short-circuit distance adjustment metal plate 190 required in the conventional structure without impairing the low-loss characteristics of the conventional broadband, making assembly easy and reliable connection.
- the purpose is to provide a high-performance triplate line-waveguide converter at low cost.
- a first aspect of the present invention provides a planar antenna module in which a connection conductor (18) to a high-frequency circuit, a feed line portion (102), and a tena portion (101) are laminated in this order.
- the antenna section (101) includes a first feed line (42) connected to the radiating element (41) and a feed line section (10
- the fourth ground conductor (14) having the second slot (24) at a position corresponding to the position of (43), A third dielectric (33), a fourth dielectric (34), and a second coupling port forming part (23) at a position corresponding to the position of the first connection part (43). 3 ground conductors (13).
- the feed line portion (102) includes a second connection portion (52) and a second connection portion (52) electromagnetically coupled to the second feed line (51) and the first connection portion (43) of the antenna portion (101). 7 first conductor opening (17) of ground conductor (17)
- a power supply board in which a plurality of power supply line groups including a third connection part (53) electromagnetically coupled to each other are formed.
- (50) a seventh ground conductor (17) having a first waveguide opening (63) at a position corresponding to the position of the third connection portion (53), and a power supply substrate (50)
- the fourth ground conductor (14) between the third coupling opening forming portion (25) and the first waveguide opening (63) at a position corresponding to the position of the second connecting portion (52).
- connection conductor (18) is connected to the second waveguide at a position corresponding to the first waveguide opening (63) of the seventh ground conductor (17) of the feed line portion (102). It has a tube opening (64).
- the connecting conductor (18) with the high-frequency circuit the seventh ground conductor (17), the sixth ground conductor (16), the power supply board (50), the fifth ground conductor (15), the fourth ground conductor A ground conductor (14), a third ground conductor (13) including a third dielectric (33) and a fourth dielectric (34), an antenna substrate (40), a first dielectric (31) and The second ground conductor (12) including the second dielectric (32) and the first ground conductor (11) are laminated in this order.
- an inexpensive planar antenna module capable of realizing loss reduction, characteristic change reduction due to assembly error, and improvement in frequency characteristic stability is provided.
- the second aspect of the present invention has a radiating element (5) and a feeder line (6), and is disposed on the surface of the ground conductor (1) via a dielectric (2a) and a metal spacer (9a).
- a triplate type planar array antenna comprising a body (2b) and a slot plate (4) arranged via a metal spacer (9b). Where the slot A dummy slot opening (8) is provided adjacent to the opening (7).
- the slot opening (7) has an interval of 0.85-0.93 times the free space wavelength of the center frequency of the frequency band to be used.
- a triplate type planar array antenna according to the second aspect which is arranged at intervals of 93 times.
- the fourth aspect of the present invention provides a triplate type planar array antenna according to the second or third aspect, wherein at least two rows of dummy slot openings (8) 1S are arranged.
- the dummy slot opening is provided in the antenna circuit board (3).
- a triplate type planar array antenna according to any one of the second to fourth aspects, in which a dummy element (10) is provided so that (8) is positioned directly above.
- a line (110) is provided on the dummy element (10) provided on the antenna circuit board (3), and electrically connected via a metal spacer (190b).
- a short triplate type planar array antenna according to the second, fifth and fifth modes.
- equivalent antenna characteristics are realized between the antenna at the array end of the antenna array configured by arranging a plurality of small antennas and the antenna at the center of the array.
- a triplate type planar array antenna is provided.
- a seventh aspect of the present invention includes a film substrate (140) having a stripline conductor (300) and disposed on a surface of a ground conductor (111) via an insulator (120a), and the film
- An upper ground conductor (150) disposed on the surface of the substrate via a dielectric (120b) and a triplate line configured, and a waveguide (160) connected to the ground conductor (111) are provided. Equipped with a triplate line—waveguide transformation.
- the ground conductor (111) is provided with a through hole having the same dimension as the inner dimension of the waveguide (160) at the connection position of the ground conductor (111) and the waveguide (160).
- the holding portion of the film substrate (140) is provided with a metal spacer portion (170a) having a thickness equivalent to that of the dielectric (120a).
- the film substrate (140) is sandwiched between the metal spacer (170a) and the metal spacer (170b) having the same dimensions.
- An upper ground conductor (150) is placed on top of the metal spacer (170b), and a rectangular resonance is formed at the tip of the conversion section of the waveguide (160) of the stripline conductor (300) formed on the film substrate (140).
- a patch pattern (100) is formed.
- a square resonant patch putter The center position of the waveguide (100) matches the center position of the inner dimension of the waveguide (160).
- the dimension L1 in the line connecting direction of the rectangular resonant patch pattern (100) is approximately 0.27 times the free space wavelength ⁇ of a desired frequency, and the rectangular resonant ⁇
- the short-circuit metal plate 180 and the short-circuit distance adjustment metal plate 190 which are required in the conventional structure without impairing the conventional broadband and low-loss characteristics, become unnecessary.
- An inexpensive triplate line waveguide converter that is easy to assemble and has high connection reliability is provided. Since the component parts such as the metal spacer parts 170a and 170b and the upper ground conductor 150 and the ground conductor 11 1 can be formed at low cost by punching a metal plate or the like having a desired thickness, this triplate Lines Waveguide modifications are provided at a lower cost.
- FIG. 1 is a perspective view showing components of a conventional planar antenna module.
- FIGS. 2 (a) to 2 (c) are plan views showing components of a conventional planar antenna module, and FIG. 2 (d) is a sectional view thereof.
- FIG. 3 is a pass loss characteristic diagram of a conventional planar antenna module.
- FIG. 4 is a perspective view showing a planar antenna module that works on the first embodiment of the present invention.
- FIG. 5 is a perspective view showing components of the antenna portion (101) of the planar antenna module that works on the first embodiment of the present invention.
- Fig. 6 is a plan view showing components of the antenna section (101) of the planar antenna module that works on the first embodiment of the present invention.
- FIG. 7 is a perspective view showing components of the feed line portion (102) of the planar antenna module that works on the first embodiment of the present invention.
- FIG. 8 is a plan view showing components of the feed line portion (102) of the planar antenna module that works on the first embodiment of the present invention.
- FIG. 9 (a) is a plan view showing the connection of the planar antenna module according to the first embodiment of the present invention. It is a perspective view which shows a conductor (18), (b) is the top view.
- FIG. 10 is a graph showing the relative gain characteristics of the planar antenna module that works on the first embodiment of the present invention compared with the conventional example.
- FIG. 11 is an explanatory diagram of a lateral propagation component in the triplate type planar antenna used by the present inventors.
- FIG. 12 is a diagram showing an example of a method for reducing a lateral propagation component in a planar antenna.
- FIG. 13 is a diagram showing the relationship between element arrangement spacing and gain-efficiency in a conventional triplate type planar antenna.
- FIG. 14 is an exploded perspective view showing a conventional triplate type planar antenna.
- FIG. 15 (a) is an exploded perspective view showing a triplate-type planar array antenna that works according to the second embodiment of the present invention
- FIG. 15 (b) is a front view thereof.
- FIG. 16 (a) is an exploded perspective view showing a triplate-type planar array antenna that works according to the second embodiment of the present invention
- FIG. 16 (b) is a front view thereof.
- FIG. 17 is a front view showing a triplate-type planar array antenna that works according to the second embodiment of the present invention.
- FIG. 18 is a front view showing a triplate-type planar array antenna that works on the second embodiment of the present invention.
- FIG. 19 (a) is an exploded perspective view showing a triplate-type planar array antenna that works according to the second embodiment of the present invention
- FIG. 19 (b) is a front view thereof.
- FIG. 20 is a front view showing a triplate-type planar array antenna that works on the second embodiment of the present invention.
- FIG. 21 is a diagram of horizontal plane directivity at the center and end portions of a conventional receiving antenna array.
- FIG. 22 is a horizontal plane directivity diagram of the central portion and the end portion of the receiving antenna array by the triplate type planar array antenna that works according to the second embodiment of the present invention.
- FIG. 23 (a) is a top view showing a conventional example
- FIG. 23 (b) is a cross-sectional view thereof
- (C) is a cross-sectional view showing another conventional example.
- FIGS. 24 (a) to 24 (c) are top views showing a part of an example of a triple-plate-waveguide converter according to the third embodiment of the present invention.
- (D) is a top view showing a short-circuit distance adjusting metal plate of a conventional example.
- FIG. 25 (a) is a top view showing an example of a triplate line-waveguide converter that works on the third embodiment of the present invention
- FIG. 25 (b) is a sectional view thereof. It is.
- FIG. 26 is a top view showing another example of the triplate line-waveguide converter that works on the third embodiment of the present invention.
- FIG. 27 is a cross-sectional view for explaining the conversion state of excitation modes in a triplate line-waveguide converter that works according to the third embodiment of the present invention.
- FIG. 28 is a diagram showing the relationship between the frequency and return loss of one example of a triplate line-waveguide converter that works on the third embodiment of the present invention and another example. .
- the planar antenna module of the present invention mainly includes an antenna section (101), a feed line section (102), and a connection conductor (18).
- the antenna unit (101) includes an antenna group including a first feed line (42) connected to the radiating element (41) and a first connection unit (43) electromagnetically coupled to the feed line unit (102).
- Antenna substrate (40) having a plurality of holes, a first ground conductor (11) having a first slot (21) at a position corresponding to the position of the radiating element (41), and an antenna substrate (40). Between the first ground conductor (11) and the first dielectric (31), the second dielectric (32), and the first connecting portion (43) at a location corresponding to the position of the first dielectric (31).
- a fourth ground conductor (14) having a second slot (24) is provided at a location corresponding to the position of the portion (43).
- the feed line section (102) includes a second connection section (52) coupled to the second feed line (51) and the first connection section (43) of the antenna section (101) and a seventh connection section.
- a power supply substrate (50) having a plurality of power supply line groups each including a third connection portion (53) electromagnetically coupled to the first waveguide opening (63) of the ground conductor (17), and a power supply substrate ( 50) and the fourth ground conductor (14), corresponding to the position of the second connection (52)
- the fourth coupling port forming portion (26) and the first joint are formed at a position corresponding to the position of the second connection portion (52).
- the second waveguide opening forming portion (62) is provided at a position corresponding to the position of the waveguide opening (63) of the second, and the fourth coupling port forming portion (26) and the second waveguide are provided.
- a seventh earth conductor (17) having (63) is provided.
- the connecting conductor (18) has a second waveguide opening at a position corresponding to the first waveguide opening (63) of the seventh ground conductor (17) of the feed line portion (102). Part (64).
- the fourth dielectric (34) including the third ground conductor (13) and the third dielectric (33), the antenna substrate (40), the second ground conductor (12) and the first dielectric
- the second dielectric (32) including the dielectric (31) and the first ground conductor (11) are laminated in this order.
- the radiating element (41) formed on the antenna substrate (40) is connected to the fourth ground conductor (14). Together with the first slot (21) formed in the first ground conductor (11), it functions as an antenna element and can take in energy of a desired frequency. This energy is transmitted to the first connection portion (43) through the first feed line (42) formed on the antenna substrate (40). The energy further flows from the first connecting portion (43) formed on the antenna substrate (40) via the second slot (24) formed on the fourth ground conductor (14). Since it is electromagnetically coupled to the second connection portion (52) formed on (50), it is transmitted to the second feed line (51) formed on the feed substrate (50).
- the first coupling port forming portion (22) formed in the second ground conductor (12) and the second coupling port forming portion formed in the third ground conductor (13) (23), a third coupling port forming part (25) formed in the fifth ground conductor (15), and a fourth coupling port forming part (in the sixth ground conductor (16)) ( 26) means that electric power electromagnetically coupled from the first connection part (43) formed on the antenna board (40) to the second connection part (52) formed on the power supply board (50) is leaked to the surroundings. And contributes to efficient transmission.
- the electric power transmitted to the second feeder line (51) is formed on the seventh ground conductor (17) by the third connection part (53) formed on the feeder substrate (50). Then, the signal is transmitted through the first waveguide opening (63) to the second waveguide opening (64) formed in the connection conductor (18) connected to the high-frequency circuit.
- the first waveguide opening forming part (61) formed in the fifth ground conductor (15) and the second waveguide opening forming part (in the sixth ground conductor (16)) ( 62) means that the power of the third connection part (53) formed on the power supply substrate (50) is efficiently transmitted to the second waveguide opening (64) without leaking to the surroundings. Contribute.
- the line (42) can achieve low loss characteristics even at high frequencies.
- the fifth ground conductor (15) and the sixth ground conductor (16) stabilize the feeder board (50) between the fourth ground conductor (14) and the seventh ground conductor (17).
- the second feeder line (51) is held by the gap (71) formed in the fifth ground conductor (15) and the gap (72) formed in the sixth ground conductor (16). Low loss characteristics and low loss characteristics can be realized even at high frequencies.
- planar antenna module that works with the present embodiment is configured only by laminating each component, and transmission / reception power is transmitted by electromagnetic coupling. Therefore, the positional accuracy during assembly is not limited to the conventional assembly accuracy. It does not have to be highly accurate.
- the antenna substrate (40) and the power supply substrate (50) used in this embodiment can be configured using a flexible substrate in which a copper foil is bonded to a polyimide film.
- the radiating element (41), the first feed line (42), the first connection part (43), and the second connection Preferably, the feeder line (51), the second connection part (52), and the third connection part (53) are formed.
- the flexible substrate has a plurality of radiating elements by etching away unnecessary copper foil (metal foil) on a substrate having a film as a base material and a metal foil such as a copper foil bonded thereon. And is used to form a feed line connecting them.
- the flexible substrate is It may be a copper-clad laminated board in which a copper foil is bonded to a resin board.
- the ground conductor used in the present embodiment can be manufactured using a metal plate or a plated plastic plate.
- an aluminum plate is preferable to use.
- They are also composed of a flexible substrate with a film as a base material and a copper foil laminated on it, and a copper-clad laminate with a thin resin plate impregnated with glass cloth and a copper foil laminated with a copper foil. I can do it.
- Slots and joint opening forming portions formed in the ground conductor can be formed by punching with a mechanical press or by etching. The punching force with a mechanical press is preferred from the standpoint of simplicity and productivity.
- the dielectric used in the present embodiment it is preferable to use a foam or the like having a low dielectric constant relative to air.
- the foam include polyolefin foams such as polyethylene and polypropylene, polystyrene foams, polyurethane foams, polysilicon foams, and rubber foams. Of these, polyolefin foams are preferred because of their lower dielectric constant relative to air.
- the first ground conductor (11) and the fourth ground conductor (14) were 0.7 mm thick aluminum plates.
- the second ground conductor (12), the third ground conductor (13), the fifth ground conductor (15), the sixth ground conductor (16) and the seventh ground conductor (17) A 3mm aluminum plate was used.
- the (circuit) connecting conductor (18) was an aluminum plate with a thickness of 3 mm.
- foamed polyethylene foam having a thickness of 0.3 mm and a relative dielectric constant of about 1.1 was used.
- the antenna substrate (40) and the power supply substrate (50) are flexible substrates in which copper foil is bonded to a polyimide film.
- Unnecessary copper foil is removed by etching to remove the radiating element (41) and the first power supply line (42 ), A first connection part (43), a second feed line (51), a second connection part (52), and a third connection part (53). All ground conductors were punched out of an aluminum plate with a mechanical press.
- the first slot (21) formed in the first ground conductor (11) and the second slot (24) formed in the fourth ground conductor (14) are free space wavelengths with a desired frequency of 76 GHz.
- the above-described members are sequentially stacked as shown in FIGS. 4, 5, and 7 to form a planar antenna module, and the received power is measured by connecting a measuring instrument.
- the reception gain was improved by more than ldB in relative gain compared to the case where the gain in the conventional component configuration was used as a reference, and good characteristics could be realized.
- the planar array antenna according to the second embodiment sandwiches the antenna circuit board 3 as a metal spacer 9a, 9b force metal shield part having the same thickness as the dielectrics 2a, 2b. And a dummy slot opening 8 adjacent to the slot opening 7 provided in the slot plate 4 is provided.
- another planar array antenna according to the present embodiment has a free space wavelength at the center frequency of the frequency band that uses the arrangement interval of the target dummy slot openings 8. On the other hand, it is characterized by a ratio of 0.85 to 0.93 times.
- a similar dummy element 10 is provided on the antenna circuit board 3.
- Still another planar array antenna according to the present embodiment includes a metal line 110 provided on the dummy element 10 provided on the antenna circuit board 3, as shown in FIGS. 19 (a), 19 (b), and 20. Spare It is characterized by an electrical short circuit through the circuit 9b.
- Another planar array antenna according to this embodiment is characterized in that at least two rows of target dummy slot openings 8 are arranged.
- the ground conductor 1 and the slot plate 4 can be any metal plate or a plate plated with plastic, but an aluminum plate is particularly preferable because it can be manufactured at a low weight and at a low cost. It can also be configured by etching away unnecessary copper foil from a flexible substrate that is made by laminating copper foil to a film as a base material, and copper foil is coated on a thin resin plate impregnated with glass cloth. A copper-clad laminate with laminated foils can also be used. Slots and the like formed in the ground conductor can be formed by punching with a mechanical press or by etching. Punching with a mechanical press is preferred because of its simplicity and productivity.
- the dielectric 2a and the dielectric 2b it is preferable to use air, a low dielectric constant, a foam or the like.
- foams include polyolefin foams such as polyethylene and polypropylene, polystyrene foams, polyurethane foams, polysilicon foams, and rubber foams.
- Polyolefin foams have a dielectric constant relative to air. Is preferred because it is smaller.
- the antenna circuit board 3 can be configured by forming a radiating element 5 and a feed line 6 by etching away unnecessary copper foil from a flexible board having a film as a base material and a copper foil laminated thereon. However, it can also be constituted by a copper-clad laminate in which a glass cloth is laminated with a copper foil on a thin resin board impregnated with a resin.
- a flexible substrate with a copper film laminated on a polyimide film is preferred for its heat resistance, dielectric properties, and versatility. In view of dielectric properties, a fluorine-based film is preferably used.
- the basic shapes of the radiating element 5 and the slot opening 7 may be rhombus, square, or circle.
- Ground conductor 1 was made of an aluminum plate having a thickness of 1 mm.
- the dielectric 2a and the dielectric 2b were made of a foamed polyethylene plate having a relative dielectric constant of about 1 and a thickness of 0.3 mm.
- the antenna circuit board 3 uses a film substrate in which a polyimide film with a thickness of 25 m is bonded to a copper foil with a thickness of 18 m, and the copper foil is etched to form a plurality of radiating elements 5 and feeder lines. Created by forming 6.
- the radiating element 5 is square in this embodiment, and the length of one side thereof is approximately 0.4 times the free space wavelength ⁇ 0 of the use frequency 76.5 GHz.
- the slot plate 4 was manufactured by forming a plurality of rectangular slot openings 7 on an aluminum plate having a thickness of 1 mm by stamping with a press method. The short side of the slot opening 7 was about 0.55 times ⁇ 0.
- the radiating element 5 and the slot opening 7 are. It is arranged at intervals of about 0.9 times.
- the conversion of the output end of each antenna is a waveguide conversion, and the conversion is performed by the short-circuit plate 120.
- one 4 ⁇ 16 element antenna is configured as a transmitting antenna, and nine 2 ⁇ 16 element antennas are configured as receiving antennas.
- the slot plate 4 has the same opening dimensions as the slot opening 7 and each has 1 X
- a pair of dummy slot openings 8 arranged in a 16 shape was provided so that nine receiving antennas were positioned between them (see Fig. 15 (b)).
- the arrangement interval of the dummy slot openings 8 was the same as that of the slot openings 7 (0.9 ⁇ ).
- the planar array antenna of the present embodiment configured as described above has a large level difference in the horizontal plane directivity between the central portion and the end portion of the receiving antenna array, as shown in FIG. In contrast to the asymmetry, stable characteristics were realized as shown in Fig. 22.
- Example 3 shown in FIGS. 16 (a) and 16 (b) is different from Example 2 in antenna circuit board 3.
- the dummy element 10 having a side length of approximately 0.4 ⁇ 0 is provided so that the dummy slot opening 8 is positioned directly above.
- Example 4 shown in FIGS. 19 (a) and 19 (b), the line 110 was formed in the dummy element 10 in Example 3, and the slot plate 4 was electrically connected.
- the gain and directivity characteristics of the antenna configured at the array end are equivalent to the antenna configured at the array center. Therefore, a triplate planar array antenna can be realized.
- the metal spacer portions 170a, 170b, etc. shown in FIG. It can be formed by punching a metal plate with a thickness of.
- a metal spacer as shown in FIG. 25 (b) is formed on the surface of the ground conductor 1 having the through hole of the inner dimension a X b of the waveguide.
- the TM01 mode excitation mode is excited between the rectangular resonant patch pattern 100 formed on the surface of the film substrate 140 and the upper ground conductor 500 as shown in FIG. . Therefore, the excitation mode TEM mode of the triplate line formed by the strip line conductor 300 and the ground conductors 111 and 151 formed on the surface of the film substrate 140 is between the rectangular resonance patch pattern 100 and the ground conductor 150. , Converted to TM01 mode, and further, mode conversion can be performed to the rectangular waveguide excitation mode TE10 mode.
- each component when assembling each component, the center position of the rectangular resonant patch pattern 100 and the internal dimensions of the waveguide 160 The position accuracy of each component is fixed to the guide pin in order to match the center position of the metal conductor and maintain the mechanical continuity between the through hole of the ground conductor 111 and the inner wall of the metal spacer 170a, 170b. Needless to say, it is desirable to assemble and fix with screws or the like.
- the dimension L1 of the rectangular resonant patch pattern 100 in the line connecting direction is approximately 0.27 times the free space wavelength of the desired frequency, and the rectangular resonant patch pattern 1
- the dimension L2 in the direction perpendicular to the line connection direction of 00 is the free space wavelength ⁇ of the desired frequency.
- ⁇ is preferably about 0.38 times.
- L1 stands for free space wavelength of the desired frequency 0.2
- the reason for 7 times is to make it possible to smoothly convert different electromagnetic field modes to about 0.85 times the internal dimension a of the waveguide.
- L2 is approximately 0.38 times the free-space wavelength ⁇ of the desired frequency.
- free space wavelength Preferably, free space wavelength
- the film substrate 140 has a plurality of radiating elements and the like by etching away unnecessary copper foils (metal foils) of a flexible substrate having a film as a base material and a metal foil such as a copper foil laminated thereon. A strip conductor line is formed to connect the two. Further, the film substrate is composed of a copper-clad laminate in which a copper foil is laminated to a thin resin plate in which a glass cloth is impregnated with a resin.
- the ground conductor 111 and the upper ground conductor 150 can be any metal plate or a plate plated with plastic, but particularly if an aluminum plate is used, the converter according to the present embodiment is light and inexpensive. It is preferable to manufacture. In addition, they are composed of a flexible substrate with a film as a base material and a copper foil laminated on it, or a copper-clad laminate with a copper foil laminated to a thin resin plate impregnated with a glass cloth. can do.
- foams having a low relative dielectric constant to air examples include polyolefin foams such as polyethylene and polypropylene, polystyrene foams, polyurethane foams, polysilicon foams, and rubber foams. Polyolefin foams have a dielectric constant relative to air. It is preferable because it is smaller.
- foams include polyolefin foams such as polyethylene and polypropylene, polystyrene foams, polyurethane foams, polysilicon foams, and rubber foams.
- Polyolefin foams have a dielectric constant relative to air. It is preferable because it is smaller.
- Example 5 An example (Example 5) according to this embodiment is shown in FIGS. 25 (a) and 25 (b).
- the ground conductor 111 was made of an aluminum plate having a thickness of 3 mm.
- the dielectrics 120a and 120b were made of a foamed polypropylene sheet having a thickness of 0.3 mm and a relative dielectric constant of about 1.1.
- the film substrate 4 was made of a film substrate in which a 18 ⁇ m thick copper foil was bonded to a 25 ⁇ m thick polyimide film.
- the ground conductor 5 was made of an aluminum plate having a thickness of 0.7 mm.
- metal spacers 170a and 170b were used, and 0.3 mm thick anoleum plates were used!
- the film substrate 140 is provided with a dimension in the line connecting direction at a position where the strip line conductor 300 of a straight line having a line width of 0.3 mm and the waveguide at the tip thereof are located.
- the through hole of the ground conductor 111 and the position of the inner wall portion indicated by the a dimension 'b dimension of the metal spacer portions 170a and 170b, the rectangular resonant patch pattern 100 In order to accurately match the positions of the upper and lower ground conductors, they are laminated by guide pins or the like through which the respective materials are penetrated, and each member is penetrated from the upper surface of the upper ground conductor 150 and fixed to the ground conductor 111 by screws.
- the input section and the output section are formed symmetrically, a waveguide termination is connected to one output section, and the waveguide is guided to the input section.
- the result of measuring the reflection characteristics with the tube connected is shown by the solid line in Fig. 28.
- the reflection loss had a characteristic of -20 dB or less, and a low reflection loss characteristic of -20 dB or less was obtained over a wide frequency band.
- FIG. 26 shows another example (Example 6) of the present embodiment.
- Example 6 shows the dimensions of the rectangular resonant patch pattern 100 in the direction perpendicular to the line connecting direction.
- the input part and the output part are formed symmetrically, the waveguide terminal is connected to one output part, and the waveguide is connected to the input part. Indicated by a broken line.
- the reflection loss has a characteristic of 20 dB or less, and a low reflection loss characteristic of 20 dB or less was obtained over an even wider frequency band.
- the component parts such as the metal spacer portions 170a and 170b, the upper ground conductor 150, and the ground conductor 111 are punched out of a metal plate or the like having a desired thickness. It can be formed inexpensively by processing. Therefore, the short-circuit metal plate 180 and the short-circuit distance adjustment metal plate 190 required in the conventional structure that impairs the low-loss characteristics of the conventional broadband are not necessary, and an inexpensive triplate that is easy to assemble and has high connection reliability. Line Waveguide converter can be realized.
- the antenna substrate (40) in the first embodiment, the antenna circuit substrate (3) in the second embodiment, and the film substrate (140) in the third embodiment are used.
- flexible substrate films include polyethylene, polypropylene, polytetrafluoroethylene, fluorinated styrene polypropylene copolymer, ethylene tetrafluoroethylene copolymer, polyamide, polyimide, polyamideimide, polyarylate, thermoplastic plastic polyimide, poly Examples include ether imide, polyether ether ketone, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polysulfone, polyphenylene ether, polyphenylene sulfide, and polymethylpentene.
- An adhesive may be used for laminating the film and the metal foil.
- a flexible substrate with a copper foil laminated on a polyimide film is preferred because of its heat resistance, dielectric properties, and versatility.
- a fluorine-based film is preferably used because of its dielectric properties.
- an antenna device that is suitable for communication in the millimeter wave band and has improved characteristics can be provided at low cost.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/575,099 US7411553B2 (en) | 2005-03-16 | 2005-10-25 | Planar antenna module, triple plate planar, array antenna, and triple plate feeder-waveguide converter |
JP2007508016A JP4803172B2 (ja) | 2005-03-16 | 2005-10-25 | 平面アンテナモジュール、トリプレート型平面アレーアンテナ、およびトリプレート線路−導波管変換器 |
EP05799388.3A EP1860731B1 (en) | 2005-03-16 | 2005-10-25 | Planar antenna module, triplate planar array antenna, and triplate line-waveguide converter |
CN2005800279540A CN101006610B (zh) | 2005-03-16 | 2005-10-25 | 平面天线组件 |
US12/169,953 US8253511B2 (en) | 2005-03-16 | 2008-07-09 | Triple plate feeder—waveguide converter having a square resonance patch pattern |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005074918 | 2005-03-16 | ||
JP2005-074918 | 2005-03-16 | ||
JP2005074915 | 2005-03-16 | ||
JP2005-074915 | 2005-03-16 | ||
JP2005-074917 | 2005-03-16 | ||
JP2005074917 | 2005-03-16 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/575,099 A-371-Of-International US7411553B2 (en) | 2005-03-16 | 2005-10-25 | Planar antenna module, triple plate planar, array antenna, and triple plate feeder-waveguide converter |
US12/169,953 Division US8253511B2 (en) | 2005-03-16 | 2008-07-09 | Triple plate feeder—waveguide converter having a square resonance patch pattern |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006098054A1 true WO2006098054A1 (ja) | 2006-09-21 |
Family
ID=36991412
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2005/019584 WO2006098054A1 (ja) | 2005-03-16 | 2005-10-25 | 平面アンテナモジュール、トリプレート型平面アレーアンテナ、およびトリプレート線路-導波管変換器 |
Country Status (7)
Country | Link |
---|---|
US (2) | US7411553B2 (ja) |
EP (3) | EP2192654A3 (ja) |
JP (1) | JP4803172B2 (ja) |
KR (1) | KR100859638B1 (ja) |
CN (2) | CN101006610B (ja) |
MY (1) | MY142332A (ja) |
WO (1) | WO2006098054A1 (ja) |
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EP2293380A1 (en) | 2009-08-31 | 2011-03-09 | Hitachi Chemical Company, Ltd. | Triplate line inter-layer connector, and planar array antenna |
JP2011517247A (ja) * | 2008-04-15 | 2011-05-26 | フーバー ウント ズーナー アーゲー | 導波路コネクタ機能を有する表面実装型アンテナ、上記アンテナ装置を有する通信システム、アダプタ、及び配置 |
US9136576B2 (en) | 2009-04-28 | 2015-09-15 | Mitsubishi Electric Corporation | Connecting structure for a waveguide converter having a first waveguide substrate and a second converter substrate that are fixed to each other |
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US9865937B1 (en) * | 2014-07-22 | 2018-01-09 | Rockwell Collins, Inc. | Method for fabricating radiating element containment and ground plane structure |
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Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008114580A1 (ja) * | 2007-03-22 | 2008-09-25 | Hitachi Chemical Co., Ltd. | トリプレート線路-導波管変換器 |
JP2008271482A (ja) * | 2007-03-22 | 2008-11-06 | Hitachi Chem Co Ltd | トリプレート線路−導波管変換器 |
US8188805B2 (en) | 2007-03-22 | 2012-05-29 | Hitachi Chemical Co., Ltd. | Triplate line-to-waveguide transducer having spacer dimensions which are larger than waveguide dimensions |
TWI456829B (zh) * | 2007-03-22 | 2014-10-11 | Hitachi Chemical Co Ltd | 三板式線路-波導管變換器 |
KR101456314B1 (ko) * | 2007-03-22 | 2014-11-03 | 히타치가세이가부시끼가이샤 | 트리플레이트 선로-도파관 변환기 |
JP2011517247A (ja) * | 2008-04-15 | 2011-05-26 | フーバー ウント ズーナー アーゲー | 導波路コネクタ機能を有する表面実装型アンテナ、上記アンテナ装置を有する通信システム、アダプタ、及び配置 |
US9136576B2 (en) | 2009-04-28 | 2015-09-15 | Mitsubishi Electric Corporation | Connecting structure for a waveguide converter having a first waveguide substrate and a second converter substrate that are fixed to each other |
EP2293380A1 (en) | 2009-08-31 | 2011-03-09 | Hitachi Chemical Company, Ltd. | Triplate line inter-layer connector, and planar array antenna |
JP2011229107A (ja) * | 2009-08-31 | 2011-11-10 | Hitachi Chem Co Ltd | トリプレート線路層間接続器及び平面アレーアンテナ |
EP2421092A1 (en) | 2009-08-31 | 2012-02-22 | Hitachi Chemical Company, Ltd. | Triplate line inter-layer connector, and planar array antenna |
US8643564B2 (en) | 2009-08-31 | 2014-02-04 | Hitachi Chemical Company, Ltd. | Triplate line inter-layer connector, and planar array antenna |
US9817105B2 (en) | 2014-07-03 | 2017-11-14 | Fujitsu Limited | Stacked waveguide substrate, radio communication module, and radar system |
Also Published As
Publication number | Publication date |
---|---|
CN102122761B (zh) | 2013-07-17 |
US7411553B2 (en) | 2008-08-12 |
EP1860731A4 (en) | 2009-07-22 |
CN101006610B (zh) | 2012-04-25 |
CN101006610A (zh) | 2007-07-25 |
EP1860731B1 (en) | 2014-12-17 |
MY142332A (en) | 2010-11-15 |
KR100859638B1 (ko) | 2008-09-23 |
JPWO2006098054A1 (ja) | 2008-08-21 |
EP1860731A1 (en) | 2007-11-28 |
US8253511B2 (en) | 2012-08-28 |
US20080303721A1 (en) | 2008-12-11 |
KR20070088443A (ko) | 2007-08-29 |
US20070229380A1 (en) | 2007-10-04 |
EP2192654A3 (en) | 2010-06-09 |
CN102122761A (zh) | 2011-07-13 |
EP2190066A2 (en) | 2010-05-26 |
EP2192654A2 (en) | 2010-06-02 |
JP4803172B2 (ja) | 2011-10-26 |
EP2190066A3 (en) | 2010-06-09 |
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