WO2010016298A1 - Antenne et machine de communication sans fil - Google Patents

Antenne et machine de communication sans fil Download PDF

Info

Publication number
WO2010016298A1
WO2010016298A1 PCT/JP2009/056791 JP2009056791W WO2010016298A1 WO 2010016298 A1 WO2010016298 A1 WO 2010016298A1 JP 2009056791 W JP2009056791 W JP 2009056791W WO 2010016298 A1 WO2010016298 A1 WO 2010016298A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
radiation electrode
variable circuit
frequency
end portion
Prior art date
Application number
PCT/JP2009/056791
Other languages
English (en)
Japanese (ja)
Inventor
重雪 藤枝
一也 川端
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
Priority to CN200980129413.7A priority Critical patent/CN102144334B/zh
Priority to JP2010504973A priority patent/JP5051296B2/ja
Priority to DE112009001935T priority patent/DE112009001935B4/de
Publication of WO2010016298A1 publication Critical patent/WO2010016298A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • 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
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
    • H01Q5/321—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors within a radiating element or between connected radiating elements
    • 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
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
    • H01Q5/328—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors between a radiating element and ground
    • 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
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
    • H01Q5/364—Creating multiple current paths
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/06—Details
    • H01Q9/14—Length of element or elements adjustable
    • H01Q9/145—Length of element or elements adjustable by varying the electrical length
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

Definitions

  • the present invention relates to an antenna and a wireless communication device provided with a frequency variable circuit.
  • Patent Document 1 Japanese Patent Document 2
  • the antenna 200 disclosed in Patent Document 1 includes a radiation electrode 201, a base body 202, and a frequency variable circuit 203.
  • the frequency variable circuit 203 includes a varicap diode 204, and can change the resonance frequency of the radiation electrode 201 by changing the capacitance of the varicap diode 204 with the control voltage V applied to the varicap diode 204. It can be done.
  • an antenna 300 disclosed in Patent Document 2 includes a radiation electrode 301 used in a high-frequency UHF band and an additional radiation electrode 302 used in a low-frequency RF-ID band, FM band, VHF band, and the like. It has. Further, the additional radiation electrode 302 is branched from the middle of the radiation electrode 301 via the inductor 303, and the tip thereof is grounded to the ground region 305 via the reactance variable circuit 304.
  • the inductor 303 is a choke coil having a high impedance with respect to a frequency equal to or higher than the frequency in the UHF band.
  • the reactance variable circuit 304 is a frequency variable circuit that can control the resonance frequency of the additional antenna unit 306 including the additional radiation electrode 302.
  • the conventional antenna described above has the following problems. First, since the antenna 200 disclosed in Patent Document 1 has only one radiation electrode 201, only one resonance frequency can be obtained, and multiple resonance cannot be achieved. Further, since only the capacity of one varicap diode 204 can be given to the radiation electrode 201, the variable range of the resonance frequency is narrow and it is difficult to increase the bandwidth.
  • the antenna 300 disclosed in Patent Document 2 has a two-resonance configuration of a resonance frequency in the UHF band using the radiation electrode 301 and a resonance frequency such as an FM band and a VHF band using the additional radiation electrode 302. Since the additional radiation electrode 302 is connected to the radiation electrode 301 via the inductor 303 having a high impedance with respect to a frequency equal to or higher than the frequency in the UHF band, it is impossible to achieve multiple resonance in the UHF band as it is. is there. On the other hand, when the additional radiation electrode 302 is lengthened, two resonances in the UHF band can be achieved. However, when the radiation electrode 302 is lengthened, the antenna size is increased.
  • the present invention has been made to solve the above-described problems, and can achieve multiple resonances in a desired band such as the UHF band without deteriorating the antenna gain while the antenna size is reduced.
  • An object of the present invention is to provide an antenna and a wireless communication device capable of widening the resonance frequency.
  • the invention of claim 1 includes a first antenna unit having a first frequency variable circuit capable of changing a first resonance frequency by changing a reactance value thereof;
  • An antenna including a second antenna unit having a second frequency variable circuit capable of changing the second resonance frequency by changing the reactance value, wherein the first antenna unit is A first radiating electrode whose portion is connected to the power feeding portion, a first frequency variable circuit whose one end is connected to the tip of the first radiating electrode, and a base end portion of the first frequency variable circuit.
  • the second frequency variable circuit and the base end portion are connected to the other end of the second frequency variable circuit, and the open end portion is close to the middle portion of the second radiation electrode and has a capacitance in the middle portion. It comprised with the couple
  • the first resonance frequency can be changed by changing the reactance value using the first frequency variable circuit, and the reactance value can be changed using the second frequency variable circuit.
  • the second resonance frequency can be changed. Therefore, by using this antenna, two resonances can be achieved.
  • the first antenna unit is configured by the first radiation electrode, the first frequency variable circuit, and the loop-shaped second radiation electrode
  • the second antenna unit is configured by the first radiation electrode and the second radiation electrode.
  • the antenna length of the first antenna section and the antenna length of the second antenna section are As a result, the first resonance frequency and the second resonance frequency approach each other, and the first and second resonance frequencies can be arranged in a desired same frequency band such as the UHF band. .
  • the third radiation electrode is capacitively coupled to the second radiation electrode, the inductance value of the second variable frequency circuit is not increased while the length of the third radiation electrode is shortened.
  • the antenna length of the second antenna portion can be increased. As a result, it is possible to reduce insertion loss due to the lumped constant elements constituting the second frequency variable circuit, and to prevent deterioration of the antenna gain of the second antenna unit.
  • n an integer greater than or equal to 3
  • the base end is connected to the other end of the nth frequency variable circuit, and the open front end is the first.
  • an (n + 1) th radiation electrode capacitively coupled to the middle portion of the second radiation electrode and an nth antenna portion including the second radiation electrode are added.
  • the open end and the base end of the second radiation electrode are brought close to each other and capacitively coupled.
  • the antenna length of the first antenna portion can be increased without increasing the inductance value of the first frequency variable circuit. Can do.
  • any or all of the first antenna unit to the nth antenna unit are formed on a dielectric block.
  • the first frequency variable circuit to the nth frequency variable circuit have a variable capacitance whose capacitance value can be changed by a control voltage.
  • a configuration including a diode was adopted.
  • a wireless communication device configured to include the antenna according to any one of claims 1 to 5.
  • the antenna of the present invention there is an excellent effect that two resonances can be achieved in a desired band such as the UHF band.
  • the antenna size can be reduced, and the antenna gain of the second antenna portion can be prevented from being deteriorated.
  • the antenna of the third aspect of the invention it is possible to prevent the antenna gain of the first antenna unit from deteriorating.
  • the capacitance value of the capacitive coupling portion can be arbitrarily changed.
  • a radio communication apparatus capable of achieving two resonances in a desired band such as the UHF band, reducing the antenna size, and preventing deterioration of the antenna gain. Can be provided.
  • FIG. 1 is a schematic plan view showing an antenna according to a first embodiment of the present invention. It is a schematic plan view for demonstrating the effect
  • 1-1 to 1-5 antenna, A1, A2, A3 to An ... antenna, 3-1, 3-2, 3-3 to 3-n, frequency variable circuit, 4, 5, 6, 6-3 ... 6-n ... Radiation electrode, 7 ... Dielectric block, 30-32 ... Reactance circuit, 40, 50, 60 ... Base end, 41, 51, 61 ... Tip, 52 ... Middle part, 100 ... Substrate, 101 ... Non-ground area, 102 ... Ground area, 110 ... Power feeding part, A1, A2, A3-An ... Antenna part, C1-Cn ... Capacitance, D0, D1, D2 ... Variable capacitance diode, G1, G2 ... Gap, I Current, L0 to Ln: Inductor, f1: Resonance frequency, f1, f2: Resonance frequency.
  • FIG. 1 is a schematic plan view showing an antenna according to a first embodiment of the present invention.
  • the antenna 1-1 of this embodiment includes an antenna unit A1 as a first antenna unit and an antenna unit A2 as a second antenna unit, and is used in a wireless communication device such as a mobile phone. It is formed in the non-ground region 101 of the substrate 100 to be incorporated.
  • the antenna unit A1 is an antenna unit that resonates at the resonance frequency f1 that is the first resonance frequency.
  • the antenna unit A1 has a frequency variable circuit 3-1 that is a first frequency variable circuit, and changes the reactance value of the frequency variable circuit 3-1, thereby changing the resonance frequency f1 of the antenna unit A1. Be able to.
  • the frequency variable circuit 3-1, the radiation electrode 4 as the first radiation electrode, and the loop-shaped radiation electrode 5 as the second radiation electrode are configured.
  • the radiation electrode 4 is patterned in the non-ground region 101 with its base end 40 connected to the power feeding unit 110.
  • the inductor 111 is connected to the power supply unit 110 and the base end portion 40 of the radiation electrode 4
  • the inductor 112 is connected to the power supply unit 110 and the ground region 102
  • a matching circuit is connected to the inductors 111 and 112. Are formed on the non-ground region 101.
  • the base end part 40 of the radiation electrode 4 is in a state of being connected to the power feeding part 110 via the matching circuit.
  • the frequency variable circuit 3-1 has one end connected to the distal end portion 41 of the radiation electrode 4 and the other end connected to the proximal end portion 50 of the radiation electrode 5. It is interposed between. Specifically, the frequency variable circuit 3-1 has a configuration in which a variable reactance circuit 30 connected to the distal end portion 41 of the radiation electrode 4 and a reactance circuit 31 connected to the proximal end portion 50 of the radiation electrode 5 are connected. ing. Then, by applying the tuning voltage Vc as the control voltage from the tuning voltage source 120 to the reactance circuits 30 and 31 and changing the reactance value, the resonance frequency f1 of the antenna unit A1 can be controlled. It has become.
  • the radiation electrode 5 extends from the proximal end portion 50 connected to the reactance circuit 31 of the frequency variable circuit 3-1, draws a loop, and the distal end portion 51 wraps around the proximal end portion 50 side, so that the proximal end portion 50 It has a shape next to it. That is, the radiation electrode 5 has a loop shape as a whole, and the distal end portion 51 faces the proximal end portion 50 via the gap G1.
  • the transmission / reception band of the antenna unit A1 having such a configuration is the UHF band, and the reactance values of the reactance circuits 30 and 31 of the frequency variable circuit 3-1 and the lengths of the radiation electrodes 4 and 5 resonate at the resonance frequency f1 of the UHF band. Is set to
  • the antenna portion A2 is an antenna portion that resonates at the resonance frequency f2 that is the second resonance frequency.
  • the antenna unit A2 includes a frequency variable circuit 3-2 that is a second frequency variable circuit, and changes the reactance value of the frequency variable circuit 3-2 to change the resonance frequency f2 of the antenna unit A2. Be able to.
  • the antenna portion A2 is configured by the radiation electrode 4, the frequency variable circuit 3-2, the radiation electrode 6 as the third radiation electrode, and the radiation electrode 5.
  • the frequency variable circuit 3-2 is connected between the radiation electrode 4 and the radiation electrode 6 with one end connected to the distal end portion 41 of the radiation electrode 4 and the other end connected to the proximal end portion 60 of the radiation electrode 6. It is interposed between.
  • the frequency variable circuit 3-2 has a configuration in which a reactance circuit 30 and a reactance circuit 32 connected to the base end portion 60 of the radiation electrode 6 are connected. Then, by applying a tuning voltage Vc as a control voltage from the tuning voltage source 120 to the reactance circuits 30 and 32 and changing the reactance value, the resonance frequency f2 of the antenna unit A2 can be controlled. It has become.
  • the radiation electrode 6 extends along the radiation electrode 5 from the base end portion 60 connected to the reactance circuit 32 of the frequency variable circuit 3-2, and the distal end portion 61 in the open state is close to the middle portion 52 of the radiation electrode 5. ing. Specifically, the distal end portion 61 of the radiation electrode 6 approaches the middle portion 52 of the radiation electrode 5 via the narrow gap G2, and the radiation electrode 6 is generated between the distal end portion 61 and the middle portion 52. It is capacitively coupled to the middle part 52 of the radiation electrode 5 through a constant type capacitor C2.
  • the antenna part A2 is composed of the radiation electrode 4, the frequency variable circuit 3-2, the radiation electrode 6 and the radiation electrode 5, the antenna length of the antenna part A2 can be brought close to the antenna length of the antenna part A1. It can. Accordingly, the reactance values of the reactance circuits 30 and 32 of the frequency variable circuit 3-2 and the lengths of the radiation electrodes 4, 5, and 6 can be set to resonate at the resonance frequency f2 in the UHF band, and the antenna unit A2 Can be transmitted and received in the same UHF band as the antenna unit A1. In addition, since the radiation electrode 6 is capacitively coupled to the radiation electrode 5 and the loop-shaped radiation electrode 5 is included in the antenna length of the antenna part A2, the length of the radiation electrode 6 can be shortened. For this reason, the inductance value of the lumped constant element constituting the frequency variable circuit 3-2 can be kept small.
  • Reference numeral 130 denotes an inductor for taking a ground potential.
  • FIG. 2A and 2B are schematic plan views for explaining the operation of the antenna 1-1.
  • FIG. 2A shows the operation of the antenna unit A1
  • FIG. 2B shows the operation of the antenna unit A2.
  • FIG. 3 is a diagram showing a change state of each resonance frequency.
  • the antenna unit A1 when a current having a resonance frequency f1 is supplied from the power feeding unit 110 to the radiation electrode 4, the antenna unit A1 resonates and transmits a radio wave having the resonance frequency f1. In addition, it resonates with an external radio wave having a resonance frequency f1 and receives it. In this case, as shown in FIG.
  • the current I having the resonance frequency f1 flows from the radiation electrode 4 of the antenna part A1 through the reactance circuits 30 and 31 of the frequency variable circuit 3-1, to form a loop-shaped radiation electrode. 5, the antenna unit A1 enters an excited state, and resonates at the resonance frequency f1 in the UHF band as indicated by the solid curve S1 in FIG.
  • the antenna unit A2 when a current having a resonance frequency f2 is supplied from the power feeding unit 110 to the radiation electrode 4, the antenna unit A2 resonates and transmits a radio wave having the resonance frequency f2. Further, the signal is received by resonating with an external radio wave having a resonance frequency f2. In such a case, as shown in FIG.
  • the current I having the resonance frequency f2 flows from the radiation electrode 4 of the antenna part A2 to the radiation electrode 6 through the reactance circuits 30 and 32 of the frequency variable circuit 3-2. . Then, the current I on the radiation electrode 6 flows to the loop-shaped radiation electrode 5 through the capacitance C2 generated by capacitive coupling between the radiation electrode 6 and the radiation electrode 5, and the antenna portion A2 enters an excited state. At this time, the current I flowing from the radiation electrode 6 into the radiation electrode 4 flows in either the direction indicated by the solid line or the direction indicated by the broken line according to the magnitude of the resonance frequency f2, and the solid line curve S2 in FIG. As shown by, resonance occurs at the resonance frequency f2 in the UHF band.
  • the resonance frequencies f1 and f2 can be independently set within a wide band by the tuning voltage Vc. Can be controlled.
  • FIG. 4 is a schematic plan view showing an antenna according to the second embodiment of the present invention.
  • the frequency variable circuits 3-1 and 3-2 include variable capacitance diodes whose capacitance values can be changed by a control voltage. That is, the reactance circuit 30 is composed of an inductor L0 connected to the tip 41 of the radiation electrode 4 and a variable capacitance diode D0 having an anode connected to the inductor L0.
  • the reactance circuit 31 is connected to the cathode side of the variable capacitance diode D0 on the cathode side, and the inductor connected between the anode side of the variable capacitance diode D1 and the base end portion 50 of the radiation electrode 5 And L1.
  • the reactance circuit 32 is configured by an inductor L2 connected between the cathode side of the variable capacitance diodes D0 and D1 and the base end portion 60 of the radiation electrode 6.
  • the tuning voltage source 120 was connected to the connection point P between the cathodes of the variable capacitance diodes D0 and D1 and the inductor L2 via the high frequency cut resistors 121 and 123 and the DC pass capacitor 122.
  • the radiation electrode 6 is capacitively coupled to the radiation electrode 5 and the radiation electrode 5 is included in the antenna length of the antenna portion A2. Therefore, the length of the radiation electrode 6 is short. I'll do it. For this reason, the inductance value of the inductor L2 of the lumped constant element constituting the frequency variable circuit 3-2 can be suppressed small, and the antenna gain of the antenna part A2 is prevented from deteriorating while the antenna 1-2 is downsized. be able to.
  • the reactance circuit 32 is configured by the inductor L2. However, for example, as shown in FIG. 5, the reactance circuit 32 is connected to the cathode side of the variable capacitance diodes D0 and D1.
  • the variable capacitance diode D2 and the inductor L2 connected between the anode side of the variable capacitance diode D2 and the base end portion 60 of the radiation electrode 6 may be used. Since other configurations, operations, and effects are the same as those in the first embodiment, description thereof is omitted.
  • FIG. 6 is a schematic plan view showing an antenna according to the third embodiment of the present invention.
  • the antenna 1-3 of this embodiment is different from the first and second embodiments in that multiple resonance is achieved. That is, the inductor L3 is connected to the connection point P, the fourth radiating electrode 6-3 is connected to the inductor L3, and the tip thereof is brought close to the midway part 52 of the radiating electrode 5, thereby forming the capacitor C3.
  • the third antenna portion A3 is configured by the radiation electrode 4, the third frequency variable circuit 3-3 including the reactance circuit 30 and the inductor L3, the radiation electrode 6-3, and the radiation electrode 5.
  • the inductor Ln is connected to the connection point P
  • the (n + 1) th radiating electrode 6-n is connected to the inductor Ln
  • the tip thereof is brought close to the midway part 52 of the radiating electrode 5, so that the capacitance Cn Formed.
  • the nth antenna portion An is configured by the radiation electrode 4, the nth frequency variable circuit 3-n including the reactance circuit 30 and the inductor Ln, the radiation electrode 6-n, and the radiation electrode 5.
  • the antenna 1-3 according to this embodiment can achieve a maximum of n resonances.
  • Other configurations, operations, and effects are the same as those in the first and second embodiments, and thus description thereof is omitted.
  • FIG. 7 is a schematic plan view showing an antenna according to the fourth embodiment of the present invention.
  • the radiation electrode 5 is capacitively coupled. Specifically, the distal end portion 51 and the proximal end portion 50 in the open state of the radiation electrode 5 are brought close to each other, the gap G1 between the distal end portion 51 and the proximal end portion 50 is reduced, and the capacitance C1 is generated. The distal end portion 51 and the proximal end portion 50 were capacitively coupled.
  • FIG. 8 is a schematic perspective view showing an antenna according to a fifth embodiment of the present invention.
  • the antenna portions A1 and A2 are formed on the dielectric block 7.
  • the L-shaped radiation electrode 4 is formed on the front surface 71 of the dielectric block 7, and the radiation electrode 4 is connected to the power supply unit 110 through the wiring pattern 113 patterned on the non-ground region 101. did.
  • a matching circuit including inductors 111 and 112 as lumped constant elements was mounted on the wiring pattern 113.
  • the loop-shaped radiation electrode 5 and the linear radiation electrode 6 were formed close to the upper surface 72 of the dielectric block 7.
  • a wiring pattern 124 for connecting the radiation electrode 4, the radiation electrode 5, and the radiation electrode 6 is formed across the front surface 71 and the upper surface 72 of the dielectric block 7, and is a lumped constant element that constitutes the reactance circuit 30.
  • the wiring pattern 124 includes an inductor L0 and a variable capacitance diode D0, a variable capacitance diode D1 and an inductor L1 that are lumped constant elements constituting the reactance circuit 31, and an inductor L2 that is a lumped constant element constituting the reactance circuit 32.
  • a wiring pattern 125 connected to the connection point P on the wiring pattern 124 is formed across the front surface 71 and the non-ground region 101, and is connected to the tuning voltage source 120 for high-frequency cut that is a lumped constant element path.
  • Resistors 121 and 123 and a DC pass capacitor 122 are mounted on the wiring pattern 125.
  • the wiring pattern 131 was formed from the right corner of the radiation electrode 5 to the upper surface 72, the front surface 71, and the non-ground region 101 and connected to the ground region 102.
  • An inductor 130, which is a lumped element, is mounted on the wiring pattern 131.
  • the dielectric constant of the dielectric block 7 by changing the dielectric constant of the dielectric block 7, the value of the capacitance C2 between the distal end portion of the radiation electrode 6 and the middle portion of the radiation electrode 5, the distal end portion, and the proximal end portion of the radiation electrode 5 can be obtained.
  • the value of the capacitance C1 in between can be arbitrarily changed.
  • the antenna 1-5 can be made smaller than the antennas 1-1 to 1-4.
  • Other configurations, operations, and effects are the same as those in the first to fourth embodiments, and thus description thereof is omitted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Details Of Aerials (AREA)

Abstract

L'invention porte sur une antenne et sur une machine de communication sans fil permettant d'obtenir des bandes plus larges de fréquences de résonance ainsi qu'une résonance multiple dans des bandes désirées, telles que des bandes UHF, en réduisant la taille de l'antenne mais sans dégrader le gain d'antenne. Une antenne (1-1) formée dans une zone non de masse (101) d'une carte (100), comprend deux parties antenne (A1, A2). La partie antenne (A1), qui résonne à une fréquence de résonance (f1), comprend un circuit à fréquence variable (3-1), une électrode rayonnante (4) et une électrode rayonnante en forme de boucle (5). La partie antenne (A2), qui résonne à une fréquence de résonance (f2), comprend l'électrode rayonnante (4), un circuit à fréquence variable (3-2), une électrode rayonnante (6) et l'électrode rayonnante (5). Une partie extrémité (61) de l'électrode rayonnante (6) est située face à une partie centrale (52) de l'électrode rayonnante (5) dont elle est séparée par un espace (G2). L'électrode rayonnante (6) est couplée de façon capacitive à la partie centrale (52) de l'électrode rayonnante (5) par une capacité (C2) apparaissant entre la partie extrémité (61) et la partie centrale (52).
PCT/JP2009/056791 2008-08-05 2009-04-01 Antenne et machine de communication sans fil WO2010016298A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN200980129413.7A CN102144334B (zh) 2008-08-05 2009-04-01 天线和无线通信设备
JP2010504973A JP5051296B2 (ja) 2008-08-05 2009-04-01 アンテナ及び無線通信機
DE112009001935T DE112009001935B4 (de) 2008-08-05 2009-04-01 Antenne und Funkkommunikationsvorrichtung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008201895 2008-08-05
JP2008-201895 2008-08-05

Publications (1)

Publication Number Publication Date
WO2010016298A1 true WO2010016298A1 (fr) 2010-02-11

Family

ID=41663524

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2009/056791 WO2010016298A1 (fr) 2008-08-05 2009-04-01 Antenne et machine de communication sans fil

Country Status (4)

Country Link
JP (1) JP5051296B2 (fr)
CN (1) CN102144334B (fr)
DE (1) DE112009001935B4 (fr)
WO (1) WO2010016298A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012044254A (ja) * 2010-08-12 2012-03-01 Central Glass Co Ltd 車両用アンテナ
WO2012090415A1 (fr) * 2010-12-28 2012-07-05 三菱マテリアル株式会社 Substrat pour dispositif d'antenne, ainsi que dispositif d'antenne
CN102810732A (zh) * 2011-05-31 2012-12-05 深圳光启高等理工研究院 一种天线及具有该天线的mimo天线
CN102809752A (zh) * 2011-05-31 2012-12-05 深圳光启高等理工研究院 导航装置
EP2658031A1 (fr) * 2012-04-27 2013-10-30 LG Innotek Co., Ltd. Antenne
JP2014146851A (ja) * 2013-01-25 2014-08-14 Panasonic Corp アンテナ装置及び該アンテナ装置を備えた携帯端末

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9240627B2 (en) 2011-10-20 2016-01-19 Htc Corporation Handheld device and planar antenna thereof
US8988306B2 (en) 2011-11-11 2015-03-24 Htc Corporation Multi-feed antenna
KR101470117B1 (ko) * 2013-01-25 2014-12-05 엘지이노텍 주식회사 안테나 장치
CN103928761B (zh) * 2014-04-01 2018-02-02 刘扬 一种利用共振式馈电结构的宽带天线
KR102288148B1 (ko) * 2015-04-24 2021-08-10 엘지이노텍 주식회사 안테나 모듈
CN106505299B (zh) * 2015-09-04 2020-11-17 Ａｇｃ株式会社 天线
JP6614363B2 (ja) * 2016-11-29 2019-12-04 株式会社村田製作所 アンテナ装置および電子機器
CN109360005B (zh) * 2018-10-12 2021-07-27 苏州晟达力芯电子科技有限公司 一种射频芯片、电子标签及其识别方法
KR102301421B1 (ko) * 2020-04-29 2021-09-14 주식회사 갤트로닉스 코리아 휴대용 통신 디바이스용 하이브리드 안테나

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006080141A1 (fr) * 2005-01-27 2006-08-03 Murata Manufacturing Co., Ltd. Antenne et dispositif de communication sans fil
WO2008007489A1 (fr) * 2006-07-13 2008-01-17 Murata Manufacturing Co., Ltd. Dispositif d'antenne et appareil de communication sans fil
WO2008013021A1 (fr) * 2006-07-28 2008-01-31 Murata Manufacturing Co., Ltd. Dispositif d'antenne et dispositif de communication radio

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6642895B2 (en) * 2000-03-15 2003-11-04 Asulab S.A. Multifrequency antenna for instrument with small volume
FR2849288A1 (fr) * 2002-12-23 2004-06-25 Socapex Amphenol Une antenne de faible volume, notamment pour radiotelephones portatifs
CN1778014B (zh) * 2003-06-04 2011-06-15 株式会社村田制作所 可变频率天线及包含该天线的设备
JP2006060384A (ja) * 2004-08-18 2006-03-02 Murata Mfg Co Ltd 周波数可変型アンテナ及び無線通信機
JP4632176B2 (ja) * 2006-01-20 2011-02-16 株式会社村田製作所 アンテナ及び無線通信機
EP2104178A4 (fr) * 2007-01-19 2014-05-28 Murata Manufacturing Co Module d'antenne et dispositif de communication sans fil

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006080141A1 (fr) * 2005-01-27 2006-08-03 Murata Manufacturing Co., Ltd. Antenne et dispositif de communication sans fil
WO2008007489A1 (fr) * 2006-07-13 2008-01-17 Murata Manufacturing Co., Ltd. Dispositif d'antenne et appareil de communication sans fil
WO2008013021A1 (fr) * 2006-07-28 2008-01-31 Murata Manufacturing Co., Ltd. Dispositif d'antenne et dispositif de communication radio

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012044254A (ja) * 2010-08-12 2012-03-01 Central Glass Co Ltd 車両用アンテナ
WO2012090415A1 (fr) * 2010-12-28 2012-07-05 三菱マテリアル株式会社 Substrat pour dispositif d'antenne, ainsi que dispositif d'antenne
JP2012142775A (ja) * 2010-12-28 2012-07-26 Mitsubishi Materials Corp アンテナ装置用基板およびアンテナ装置
US9203145B2 (en) 2010-12-28 2015-12-01 Mitsubishi Materials Corporation Antenna-device substrate and antenna device
KR101831477B1 (ko) 2010-12-28 2018-02-22 미쓰비시 마테리알 가부시키가이샤 안테나 장치용 기판 및 안테나 장치
CN102810732A (zh) * 2011-05-31 2012-12-05 深圳光启高等理工研究院 一种天线及具有该天线的mimo天线
CN102809752A (zh) * 2011-05-31 2012-12-05 深圳光启高等理工研究院 导航装置
CN102810732B (zh) * 2011-05-31 2016-08-03 深圳光启创新技术有限公司 一种天线及具有该天线的mimo天线
EP2658031A1 (fr) * 2012-04-27 2013-10-30 LG Innotek Co., Ltd. Antenne
JP2013232883A (ja) * 2012-04-27 2013-11-14 Lg Innotek Co Ltd アンテナ
US9515381B2 (en) 2012-04-27 2016-12-06 Lg Innotek, Co., Ltd. Antenna
JP2014146851A (ja) * 2013-01-25 2014-08-14 Panasonic Corp アンテナ装置及び該アンテナ装置を備えた携帯端末

Also Published As

Publication number Publication date
CN102144334A (zh) 2011-08-03
JP5051296B2 (ja) 2012-10-17
DE112009001935B4 (de) 2013-06-27
JPWO2010016298A1 (ja) 2012-01-19
DE112009001935T5 (de) 2012-02-02
CN102144334B (zh) 2014-02-19

Similar Documents

Publication Publication Date Title
JP5051296B2 (ja) アンテナ及び無線通信機
JP4508190B2 (ja) アンテナ及び無線通信機
JP4632176B2 (ja) アンテナ及び無線通信機
JP4389275B2 (ja) アンテナ装置及び無線通信機
KR101122851B1 (ko) 방송 수신 단말 장치
US10205232B2 (en) Multi-antenna and radio apparatus including thereof
US20130257666A1 (en) Antenna with multiple coupled regions
US8421702B2 (en) Multi-layer reactively loaded isolated magnetic dipole antenna
JP4858860B2 (ja) マルチバンドアンテナ
JP2004166242A (ja) 表面実装型アンテナおよびそれを用いたアンテナ装置および通信装置
JPWO2008013021A1 (ja) アンテナ装置及び無線通信機
WO2015110917A2 (fr) Châssis faisant office d'antenne multibande
JPH10284919A (ja) アンテナ装置
CN112421211B (zh) 天线及电子设备
JP5105208B2 (ja) アンテナ装置及び無線通信機
JPH1127026A (ja) アンテナ装置
KR20020015694A (ko) 평판식 모노폴 안테나
TWI814085B (zh) 天線結構及具有該天線結構之無線通訊裝置
US11367963B2 (en) Antenna device
US8847821B2 (en) Antenna and radio communication apparatus
WO2010140406A1 (fr) Dispositif formant antenne et dispositif de communication sans fil
JP2004228797A (ja) 平面アンテナ
JP2004228796A (ja) アンテナユニット、放送受信端末装置
JP2009296483A (ja) アンテナ装置

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200980129413.7

Country of ref document: CN

ENP Entry into the national phase

Ref document number: 2010504973

Country of ref document: JP

Kind code of ref document: A

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

Ref document number: 09804785

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 09804785

Country of ref document: EP

Kind code of ref document: A1