WO2018123345A1 - Dispositif d'antenne - Google Patents

Dispositif d'antenne Download PDF

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Publication number
WO2018123345A1
WO2018123345A1 PCT/JP2017/041650 JP2017041650W WO2018123345A1 WO 2018123345 A1 WO2018123345 A1 WO 2018123345A1 JP 2017041650 W JP2017041650 W JP 2017041650W WO 2018123345 A1 WO2018123345 A1 WO 2018123345A1
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WO
WIPO (PCT)
Prior art keywords
antenna
antenna device
loop
ground conductor
loop portion
Prior art date
Application number
PCT/JP2017/041650
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English (en)
Japanese (ja)
Inventor
正裕 伊澤
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 JP2018558901A priority Critical patent/JP6673503B2/ja
Priority to CN201780080840.5A priority patent/CN110121815B/zh
Publication of WO2018123345A1 publication Critical patent/WO2018123345A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
    • 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
    • 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 device including a plurality of antennas.
  • Patent Document 1 Japanese Unexamined Patent Application Publication No. 2006-42111 discloses an antenna device including two antennas.
  • Isolation is an amount indicating the degree of signal leakage from one antenna element to the other antenna element between antenna elements. Isolation is expressed as the ratio (dB) between the power of the input signal to one antenna element and the power of the leakage signal from one antenna element to the other antenna element.
  • the current excited from one antenna to the other is reduced by a resonance phenomenon that occurs in the loop path formed by the parasitic element and the ground plane. As a result, isolation between antennas is ensured.
  • the resonance frequency of the loop path needs to be adjusted based on the frequency of the signal received by the antenna.
  • the length of the parasitic element affects the inductance component of the parasitic element. If the length of the parasitic element is changed, the resonance frequency of the loop path changes. For this reason, if the length of the parasitic element is changed, the loop portion hardly resonates with the signal received by the antenna. There is a possibility that the amount of signal transmitted from the antenna to the other antenna increases and the isolation between the antennas decreases.
  • the parasitic element can be an obstacle to downsizing the antenna device while ensuring isolation between the antennas.
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to downsize the antenna device while ensuring isolation between the antennas.
  • An antenna device includes a ground conductor, a first antenna and a second antenna, and a first loop portion.
  • the first antenna and the second antenna are electrically connected to the ground conductor.
  • the first loop unit includes a first parasitic element and a first reactance element. In the first parasitic element, one end of the first parasitic element is electrically connected to the ground conductor. In the first parasitic element, the other end of the first parasitic element is connected to the ground conductor via the first reactance element.
  • a circuit element is "electrically connected" to another circuit element when both are directly connected or indirectly connected via a different circuit element. Means.
  • the antenna device when the signal received by the first antenna or the second antenna is transmitted to the first loop unit, the energy of the signal is consumed in the first loop unit. The power of the signal transmitted from one antenna to the other antenna is reduced. As a result, isolation between antennas can be ensured.
  • the other end of the first parasitic element is connected to the ground conductor via the first reactance element.
  • the resonance frequency of the first loop portion can be adjusted by the length of the first parasitic element (inductance component) and the reactance of the first reactance element when designing the antenna device. Even when the first parasitic element is shortened, the antenna device can be designed so that the first loop unit resonates with the signal received by the first antenna by adjusting the reactance of the first reactance element. As a result, the antenna device can be reduced in size.
  • the antenna device according to the present invention can reduce the size of the antenna device while ensuring isolation between the antennas.
  • FIG. 3 is a diagram illustrating an example of an equivalent circuit diagram of the antenna device according to Embodiment 1.
  • FIG. It is a figure which shows an example of the external appearance of the antenna apparatus shown by FIG.
  • FIG. 6 is a diagram showing an example of an equivalent circuit diagram of an antenna device according to a modification of the first embodiment.
  • FIG. 6 is a diagram illustrating an example of an equivalent circuit diagram of an antenna device according to Embodiment 2.
  • FIG. It is a figure which shows an example of the external appearance of the antenna apparatus shown by FIG. It is a figure which shows the isolation characteristic of the antenna apparatus shown by FIG. 5, and the isolation characteristic of the antenna apparatus shown by FIG.
  • FIG. 10 is a diagram illustrating an example of an equivalent circuit diagram of the antenna device according to the third embodiment. It is a figure which shows an example of the external appearance of the antenna apparatus shown by FIG. It is a figure which shows together the isolation characteristic of the antenna apparatus shown by FIG. 8, and the isolation characteristic of the antenna apparatus shown by FIG.
  • FIG. 10 is a diagram illustrating an example of an equivalent circuit diagram of an antenna device according to a fourth embodiment. It is a figure which shows an example of the external appearance of the antenna apparatus shown by FIG.
  • FIG. 10 is a diagram illustrating an example of an equivalent circuit diagram of an antenna device according to Modification 1 of Embodiment 4.
  • FIG. 10 is a diagram showing an example of an equivalent circuit diagram of an antenna device according to Modification 2 of Embodiment 4.
  • FIG. 10 is a diagram illustrating an example of an equivalent circuit diagram of an antenna device according to Modification 3 of Embodiment 4.
  • FIG. 1 is a diagram illustrating an example of an equivalent circuit diagram of the antenna device 1 according to the first embodiment.
  • the antenna device 1 can perform communication according to a plurality of communication methods.
  • the antenna device 1 can perform communication in accordance with WiFi (registered trademark) (Wireless Fidelity) and Bluetooth (registered trademark) in, for example, 2400 to 2484 MHz (2.4 GHz band).
  • WiFi registered trademark
  • Bluetooth registered trademark
  • the antenna device 1 includes a ground conductor GND1, antennas ANT1 and ANT2, and a loop portion LP11.
  • the ground conductor GND ⁇ b> 1 is drawn as a straight line connecting the feeding points FP ⁇ b> 1 and FP ⁇ b> 2 in order to make it easy to understand the connection relationship between each component. The same applies to FIG. 4, FIG. 5, FIG. 8, FIG. 11, and FIG.
  • the antenna ANT1 is connected to the ground conductor GND1 through the feeding point FP1.
  • the antenna ANT2 is connected to the ground conductor GND1 through the feeding point FP2.
  • the resonance frequency of the antenna ANT1 is close to the resonance frequency of the antenna ANT2.
  • the loop portion LP11 includes a parasitic element PE11 and a reactance element RT11.
  • the end T9 of the parasitic element PE11 is connected to the ground conductor GND1 via the reactance element RT11.
  • the end T10 of the parasitic element PE11 is connected to the ground conductor GND1.
  • the reactance element RT11 is connected to the ground conductor GND1 at the connection point N11.
  • the reactance element RT11 includes an inductor L11.
  • the reactance element RT11 may include a capacitor.
  • a loop path is formed by the parasitic element PE11, the reactance element RT11, and the portion of the ground conductor GND1 from the connection point N11 to the end T12 of the parasitic element PE11.
  • the capacitive coupling between the loop part LP11 and the antenna ANT1 is stronger than the capacitive coupling between the loop part LP11 and the antenna ANT2.
  • the magnitude relationship is expressed by the fact that the parasitic element PE11 and the antenna ANT1 are connected via the capacitor C1, while the parasitic element PE11 and the antenna ANT2 are not connected via the capacitor. ing.
  • the antenna device 1 including the antennas ANT1 and ANT2, it is necessary to ensure isolation between the antennas ANT1 and ANT2.
  • the signal received by the antenna ANT1 or ANT2 is transmitted to the loop part LP11, whereby the power of the signal is consumed in the loop part LP11.
  • the power of the signal transmitted from one antenna to the other antenna is reduced.
  • the isolation between the antenna ANT1 and the antenna ANT2 can be ensured by the loop portion LP11.
  • the resonance frequency f1 of the loop portion LP11 needs to be adjusted based on the frequency of the signal received by the antenna ANT1 or ANT2.
  • the length of the parasitic element PE11 included in the loop portion LP11 affects the inductance component of the parasitic element PE11.
  • the resonance frequency f1 of the loop portion LP11 is changed.
  • the resonance frequency f1 of the loop portion LP11 is set to the parasitic element PE11. It is necessary to adjust by a method other than the change of the length.
  • the resonance frequency f1 of the loop portion LP11 is adjusted by changing the reactance of the reactance element RT11.
  • the resonance frequency f1 of the loop portion LP11 can be adjusted by the length (inductance component) of the parasitic element PE11 and the reactance of the reactance element RT11 when the antenna device 1 is designed. Even when the parasitic element PE11 is shortened, the antenna device 1 can be designed so that the loop portion LP11 resonates with a signal received by the antenna ANT1 or ANT2 by adjusting the reactance of the reactance element RT11. As a result, the antenna device can be reduced in size.
  • FIG. 2 is a diagram showing an example of the appearance of the antenna device 1 shown in FIG. In FIG. 2, the X-axis direction and the Y-axis direction are orthogonal to each other. The same applies to FIG. 6, FIG. 9, and FIG.
  • the ground conductor GND1 extends in the X-axis direction.
  • the antenna ANT1, the parasitic element PE11 included in the loop part LP11, and the reactance element RT11 are arranged on the dielectric substrate 10.
  • the antenna ANT2 is disposed on the dielectric substrate 20.
  • the antenna ANT1 is an inverted F-type monopole antenna that extends from the feed point FP1 in the Y-axis direction and bends from the Y-axis direction to the X-axis direction.
  • the antenna ANT1 includes a main body ML1, a short-circuit line SL1, and a feed line FL1.
  • the main body ML1 extends in the X-axis direction from the bent portion BP1 of the antenna ANT1.
  • the feed line FL1 extends in the Y-axis direction from the feed point FP1 to the bent portion BP1.
  • the short-circuit line SL1 connects the main body ML1 and the ground conductor GND1. Since the short circuit line SL1 has an inductance component, the resonance frequency of the antenna ANT1 can be adjusted to a desired value by forming the short circuit line SL1.
  • the mounting space can be effectively utilized by making the antenna ANT1 an inverted-F monopole antenna. As a result, the dead space is reduced and the antenna device 1 can be downsized. Further, since the main body ML1 can be arranged away from the ground conductor GND1, the capacitive coupling between the main body ML1 and the ground conductor GND1 can be weakened. As a result, the signal radiation capability of the main body ML1 can be increased.
  • the distance between the loop part LP11 and the antenna ANT1 is smaller than the distance between the loop part LP11 and the antenna ANT2. Therefore, capacitive coupling between the loop part LP11 and the antenna ANT1 is stronger than capacitive coupling between the loop part LP11 and the antenna ANT2.
  • the loop portion LP11 since the loop portion LP11 is close to the antenna ANT1, it is not necessary to form a dielectric substrate between the loop portion LP11 and the antenna ANT2. Therefore, for example, a notch (notch) of the dielectric substrate can be formed between the loop portion LP11 and the antenna ANT2, and the degree of freedom in designing the dielectric substrate can be increased.
  • the parasitic element PE11 extends in the Y-axis direction from the reactance element RT11, and is bent in the bent portion BP2 from the Y-axis direction to the X-axis direction.
  • the parasitic element PE11 extends from the bent portion BP2 in the X-axis direction, and is bent from the X-axis direction to the Y-axis direction at the bent portion BP3.
  • the parasitic element PE11 extends from the bent portion BP3 in the Y-axis direction, and is bent in the bent portion BP4 from the Y-axis direction to the X-axis direction.
  • the parasitic element PE11 extends from the ground conductor GND1 in the Y-axis direction, and is bent from the Y-axis direction to the X-axis direction at the bent portion BP5.
  • the parasitic element PE11 extends from the bent part BP4 to BP5.
  • the parasitic element PE11 includes a part PT1 and a part PT2.
  • the part PT1 is a part from the bent parts BP2 to BP3.
  • the part PT2 is a part from the bent parts BP4 to BP5.
  • the part PT1 is disposed between the main body ML1 of the antenna ANT1 and the ground conductor GND1.
  • the distance between the portion PT2 and the ground conductor GND1 is larger than the distance between the portion PT1 and the ground conductor GND1.
  • the parasitic element PE11 has a plurality of bent portions BP2 to BP5, the parasitic element PE11 can be arranged to be as long as possible in a limited mounting space. Further, since the mounting space can be used effectively, the dead space is reduced and the antenna device 1 can be downsized. Furthermore, by adjusting the distance between the portion PT1 and the main body ML1, the capacitive coupling between the parasitic element PE11 and the antenna ANT1 can be adjusted to a desired strength.
  • FIG. 3 is a diagram showing the isolation characteristic IS1 of the antenna device 1 shown in FIG.
  • the vertical axis attenuation (dB) is shown as a negative value.
  • FIGS. 7 and 10. As shown in FIG. 3, the attenuation is minimized at the resonance frequency f1 of the loop portion LP11, and an attenuation of about ⁇ 20 dB is realized.
  • the loop portion LP11 is disposed between the antennas ANT1 and ANT2.
  • the loop portion LP11 may be disposed not on the antenna ANT1 and ANT2, but on the side opposite to the antenna ANT2, as seen from the antenna ANT1, as in the antenna device 1A shown in FIG.
  • the antenna device can be downsized while ensuring the isolation between the antennas.
  • FIG. 5 is a diagram illustrating an example of an equivalent circuit diagram of the antenna device 2 according to the second embodiment.
  • the loop portion LP11 of the antenna device 1 shown in FIG. 1 is replaced with a loop portion LP12. Since the configuration other than the loop portion LP12 is the same as that of the antenna device 1, the description of the configuration will not be repeated.
  • the loop portion LP12 includes a parasitic element PE12 and reactance elements RT11 and RT12.
  • the end T11 of the parasitic element PE12 is connected to the ground conductor GND1 via the reactance element RT11.
  • the end T12 of the parasitic element PE12 is connected to the ground conductor GND1 via the reactance element RT12.
  • the reactance element RT12 is connected to the ground conductor at the connection point N12.
  • the reactance element RT12 includes an inductor L12.
  • the reactance element RT12 may include a capacitor.
  • a loop path is formed by the parasitic element PE12, the reactance element RT11, the portion of the ground conductor GND1 from the connection points N11 to N12, and the reactance element RT12.
  • the resonance frequency of the loop portion LP12 is the resonance frequency f1 as in the first embodiment.
  • FIG. 6 is a diagram showing an example of the appearance of the antenna device 2 shown in FIG. As shown in FIG. 6, the parasitic element PE12 and the reactance elements RT11 and RT12 included in the loop portion LP12 are arranged on the dielectric substrate 10.
  • FIG. 7 is a diagram showing the isolation characteristic IS2 of the antenna device 2 shown in FIG. 5 and the isolation characteristic IS1 of the antenna device 1 shown in FIG.
  • the isolation characteristic IS1 shown in FIG. 7 is the same as the isolation characteristic IS1 shown in FIG.
  • the absolute value of the attenuation amount of the isolation characteristic IS2 exceeds the absolute value of the attenuation amount of the isolation characteristic IS1 by about 15 dB.
  • the absolute value of the attenuation amount of the isolation characteristic IS2 exceeds the absolute value of the attenuation amount of the isolation characteristic IS1 because both ends of the parasitic element PE12 are connected to the ground conductor via the reactance elements RT11 and RT12, respectively. This is because the bias of the current distribution in the parasitic element PE12 is suppressed more than in the first embodiment.
  • the isolation between the antennas ANT1 and ANT2 can be further increased.
  • both ends of the parasitic element of the loop portion are connected to the ground conductor via the reactance elements, respectively, thereby suppressing the bias of the current distribution in the parasitic element. Can do. As a result, the isolation between the antennas can be further increased.
  • the antenna device includes one loop unit.
  • the antenna device according to the present invention may include a plurality of loop portions.
  • the antenna device includes two loop units, and the loop unit is arranged for each antenna.
  • FIG. 8 is a diagram illustrating an example of an equivalent circuit diagram of the antenna device 3 according to the third embodiment.
  • a loop portion LP22 is added to the configuration of the antenna device 2 shown in FIG. Since the configuration other than the loop portion LP22 is the same as that of the antenna device 2, the description of the configuration will not be repeated.
  • the loop portion LP22 includes a parasitic element PE22 and reactance elements RT21 and RT22.
  • the end T21 of the parasitic element PE22 is connected to the ground conductor GND1 via the reactance element RT21.
  • the end T22 of the parasitic element PE22 is connected to the ground conductor GND1 via the reactance element RT22.
  • the reactance element RT21 is connected to the ground conductor GND1 at the connection point N21.
  • the reactance element RT21 includes an inductor L21.
  • the reactance element RT21 may include a capacitor.
  • the reactance element RT22 is connected to the ground conductor GND1 at the connection point N22.
  • the reactance element RT22 includes an inductor L22.
  • the reactance element RT22 may include a capacitor.
  • a loop path is formed by the parasitic element PE22, the reactance element RT21, the portion of the ground conductor GND1 from the connection points N21 to N22, and the reactance element RT22.
  • the resonance frequency of the loop portion LP22 is the resonance frequency f2.
  • the capacitive coupling between the loop part LP22 and the antenna ANT2 is stronger than the capacitive coupling between the loop part LP22 and the antenna ANT1.
  • the magnitude relationship is expressed by the fact that the parasitic element PE22 and the antenna ANT2 are connected via the capacitor C2, while the parasitic element PE22 and the antenna ANT1 are not connected via the capacitor. ing.
  • FIG. 9 is a diagram showing an example of the appearance of the antenna device 3 shown in FIG. As shown in FIG. 9, the parasitic element PE21 and the reactance elements RT21 and RT22 included in the loop portion LP22 are arranged on the dielectric substrate 20.
  • the distance between the loop part LP22 and the antenna ANT2 is smaller than the distance between the loop part LP22 and the antenna ANT1. Therefore, capacitive coupling between the loop part LP22 and the antenna ANT2 is stronger than capacitive coupling between the loop part LP22 and the antenna ANT1.
  • the loop part LP22 since the loop part LP22 is close to the antenna ANT2, it is not necessary to form a dielectric substrate between the loop part LP22 and the antenna ANT1. Therefore, for example, a notch of the dielectric substrate can be formed between the loop portion LP22 and the antenna ANT1, and the degree of freedom in designing the dielectric substrate can be increased.
  • FIG. 10 is a diagram showing the isolation characteristic IS3 of the antenna device 3 shown in FIG. 8 and the isolation characteristic IS2 of the antenna device 2 shown in FIG.
  • the isolation characteristic IS2 shown in FIG. 10 is the same as the isolation characteristic IS2 shown in FIG. In the frequency band of 2000 to 3000 MHz shown in FIG. 10, the isolation characteristic IS3 has a larger absolute value of attenuation than the isolation characteristic IS2.
  • the isolation characteristic IS3 has the largest absolute value of attenuation at the resonance frequency f2 of the loop portion LP22.
  • the antenna device 3 since the antenna device 3 includes two loop portions LP12 and LP22, when the signal received by the antenna ANT1 or ANT2 is transmitted to the loop portion LP12, the energy of the signal is consumed in the loop portion LP12. Even when the signal is transmitted to the loop part LP22, the energy of the signal is consumed in the loop part LP22. As a result, the isolation characteristic IS3 has a greater attenuation value than the isolation characteristic IS2, and the isolation between the antennas ANT1 and ANT2 can be further increased.
  • the isolation between the antennas can be further increased by the plurality of loop portions.
  • the case where the antenna device includes two antennas has been described.
  • the antenna device according to the present invention may include three or more antennas.
  • the case where the antenna device includes three antennas will be described.
  • FIG. 11 is a diagram illustrating an example of an equivalent circuit diagram of the antenna device 4 according to the fourth embodiment.
  • an antenna ANT3, a loop portion LP32, and a feed point FP3 are added to the configuration of the antenna device 3 shown in FIG. Since the configuration other than these is the same as that of the antenna device 3, the description of the configuration will not be repeated.
  • Loop portion LP32 includes a parasitic element PE32 and reactance elements RT31 and RT32.
  • the end T31 of the parasitic element PE32 is connected to the ground conductor GND1 via the reactance element RT31.
  • the end T32 of the parasitic element PE32 is connected to the ground conductor GND1 via the reactance element RT32.
  • the reactance element RT31 is connected to the ground conductor GND1 at the connection point N31.
  • the reactance element RT31 includes an inductor L31.
  • the reactance element RT31 may include a capacitor.
  • the reactance element RT32 is connected to the ground conductor GND1 at the connection point N32.
  • the reactance element RT32 includes an inductor L32.
  • the reactance element RT32 may include a capacitor.
  • a loop path is formed by the parasitic element PE32, the reactance element RT31, the portion of the ground conductor GND1 from the connection points N31 to N32, and the reactance element RT32.
  • the capacitive coupling between the loop part LP32 and the antenna ANT3 is stronger than the capacitive coupling between the loop part LP32 and the antenna ANT1, and is stronger than the capacitive coupling between the loop part LP32 and the antenna ANT2.
  • the magnitude relationship is that the parasitic element PE32 and the antenna ANT3 are connected via the capacitor C3, while the parasitic element PE32 and the antennas ANT1 and ANT2 are not connected via the capacitor. It is expressed.
  • FIG. 12 is a diagram showing an example of the appearance of the antenna device 4 shown in FIG. As shown in FIG. 12, the antenna ANT3, the parasitic element PE32 included in the loop part LP32, and the reactance elements RT31 and RT32 are arranged on the dielectric substrate 30.
  • the distance between the loop part LP32 and the antenna ANT3 is smaller than the distance between the loop part LP32 and the antenna ANT1, and smaller than the distance between the loop part LP32 and the antenna ANT2. Therefore, capacitive coupling between the loop part LP32 and the antenna ANT3 is stronger than capacitive coupling between the loop part LP32 and the antenna ANT1, and stronger than capacitive coupling between the loop part LP32 and the antenna ANT2.
  • Embodiment 4 the case where a loop part is arranged for every three antennas has been described. There is no need for a loop portion to be arranged for every three antennas, and if there is one loop portion in which at least one end of a parasitic element is connected to a ground conductor via a reactance element, any configuration is possible. There may be.
  • antenna device 4A according to Modification 1 of Embodiment 4 shown in FIG. 13 when there is no loop portion corresponding to antenna ANT2
  • antenna device 4B according to Modification 2 of Embodiment 4 shown in FIG.
  • the configuration may be such that there is no loop portion corresponding to one of the three antennas, as in the case where there is no loop portion corresponding to the antenna ANT3.
  • two antennas out of the three antennas are used as in the antenna device 4C according to the third modification of the fourth embodiment shown in FIG. 15 (when there is no loop portion corresponding to the antenna ANT2 and the antenna ANT3).
  • a configuration without a corresponding loop portion may be used.
  • the antenna devices according to the fourth and fourth modification examples 1 to 3 of the fourth embodiment can secure the isolation between the antennas and reduce the size of the antenna device.

Abstract

La présente invention a pour objet de réduire la taille d'un dispositif d'antenne tout en assurant une isolation entre des antennes. Un dispositif d'antenne (1) selon un mode de réalisation de l'invention comprend : un conducteur de terre(GND1) ; une première antenne (ANT1) ; une seconde antenne (ANT2) ; et une partie boucle (LP11). La première antenne (ANT1) et la seconde antenne (ANT2) sont électriquement connectées au conducteur de terre. La partie boucle (LP11) comprend un élément parasite (PE11) et un élément de réactance (RT11). Pour l'élément parasite (PE11), une partie d'extrémité (T10) est électriquement connectée au conducteur de terre (GND1). Pour l'élément parasite (PE11), une partie d'extrémité (T9) est reliée au conducteur de terre (GND1) par l'intermédiaire de l'élément de réactance (RT11).
PCT/JP2017/041650 2016-12-27 2017-11-20 Dispositif d'antenne WO2018123345A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2018558901A JP6673503B2 (ja) 2016-12-27 2017-11-20 アンテナ装置
CN201780080840.5A CN110121815B (zh) 2016-12-27 2017-11-20 天线装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016253809 2016-12-27
JP2016-253809 2016-12-27

Publications (1)

Publication Number Publication Date
WO2018123345A1 true WO2018123345A1 (fr) 2018-07-05

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JP (1) JP6673503B2 (fr)
CN (1) CN110121815B (fr)
WO (1) WO2018123345A1 (fr)

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JP2005198245A (ja) * 2003-12-10 2005-07-21 Matsushita Electric Ind Co Ltd アンテナ
JP2005252406A (ja) * 2004-03-01 2005-09-15 Advanced Telecommunication Research Institute International アンテナ構造体およびテレビ受像機
JP2005295002A (ja) * 2004-03-31 2005-10-20 Matsushita Electric Ind Co Ltd アンテナ装置および移動通信端末装置
WO2008105126A1 (fr) * 2007-02-28 2008-09-04 Nec Corporation Antenne en réseau, appareil de communication radio, et procédé de commande d'antenne en réseau
JP2011049864A (ja) * 2009-08-27 2011-03-10 Ntt Docomo Inc 偏波共用アンテナ

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JPWO2018123345A1 (ja) 2019-07-11
CN110121815B (zh) 2021-04-16
JP6673503B2 (ja) 2020-03-25

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