WO2007114165A1 - 通信装置 - Google Patents
通信装置 Download PDFInfo
- Publication number
- WO2007114165A1 WO2007114165A1 PCT/JP2007/056641 JP2007056641W WO2007114165A1 WO 2007114165 A1 WO2007114165 A1 WO 2007114165A1 JP 2007056641 W JP2007056641 W JP 2007056641W WO 2007114165 A1 WO2007114165 A1 WO 2007114165A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wiring board
- printed wiring
- conductor
- chip antenna
- circuit
- Prior art date
Links
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
- 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
- H01Q1/526—Electromagnetic shields
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
Definitions
- the present invention relates to a communication device.
- These communication devices are equipped with an antenna that establishes a wireless communication line with a base station and transmits and receives radio waves.
- this antenna in recent years, from the viewpoint of appearance and cost, Instead of protruding antennas, chip antennas built into the housing have been used.
- the adjacent devices include a digital circuit mounted on a printed wiring board on which a chip antenna is mounted, and a notebook personal computer in a PC card type communication device.
- Patent Document 1 As techniques for reducing the influence of noise, there are techniques described in Patent Document 1 and Patent Document 2.
- Patent Document 1 states that the ground wiring for the high-frequency receiver and the ground wiring of the arithmetic processing circuit are separated from each other, and noise generated by the arithmetic processing circuit does not enter the high-frequency receiver via the ground wiring. The technology to be disclosed is disclosed.
- Patent Document 2 is a wireless communication card to which a spread spectrum system is applied, which has card interface means such as a personal computer, modulation / demodulation processing means, spread spectrum despreading means, and frequency modulation means, and can be mounted in a card slot.
- card interface means such as a personal computer, modulation / demodulation processing means, spread spectrum despreading means, and frequency modulation means, and can be mounted in a card slot.
- Technology has been developed to mount antennas at least 10 cm away from the main body of a PC, etc., in communication cards. It is shown.
- Patent Document 1 Japanese Patent Laid-Open No. 9-64764
- Patent Document 2 Japanese Patent Laid-Open No. 9-289471
- the present invention has been made in view of the above-described circumstances, and aims to reduce the influence of noise by a low-cost and easy method and to eliminate the cause of a decrease in reception performance of the chip antenna. To do.
- the present applicant has provided a conductor connected to the ground conductor of the printed circuit board between the chip antenna and the digital circuit that is a noise generation source in a shape and a position that satisfy a predetermined condition. It was confirmed that chip antenna reception performance degradation due to noise generated by digital circuits, etc. can be suppressed.
- the present invention has been made in view of the above-described circumstances, and is generated by providing a conductor.
- the purpose is to prevent power amplifier oscillation which is a new problem.
- a chip antenna that captures a radio wave of a desired frequency
- an RF circuit that lowers the frequency of a received signal input from the chip antenna
- the RF A digital circuit for demodulating a low-frequency received signal input from a circuit is mounted on a printed wiring board, and is provided between the chip antenna and the digital circuit, and the printed wiring board. Force One having a conductor extending at a predetermined height and having one end connected to the ground conductor of the printed wiring board and a radio wave absorber attached to the conductor was adopted.
- a chip antenna having an electrical length corresponding to 1Z4 wavelength of a radio wave of a desired frequency, and an RF circuit for lowering the frequency of a received signal input from the chip antenna
- a digital circuit for demodulating the low frequency received signal input from the RF circuit cover, mounted on a printed wiring board, between the chip antenna and the digital circuit, and Printed wiring board force
- a conductor that extends to a predetermined height and has an electrical length corresponding to the 1Z4 wavelength of the radio wave and one end connected to the ground conductor of the printed wiring board is added to the conductor.
- a radio wave absorber is added to the conductor.
- the conductor is formed of a long sheet metal, and the radio wave absorber extends along the longitudinal direction of the conductor.
- a conductor having a length of 2 mm or more and a length substantially the same as the width of the conductor along the width direction of the conductor was adopted.
- a chip antenna that captures radio waves of a desired frequency, and a received signal input from the chip antenna is amplified and reduced in frequency.
- An RF circuit and a digital circuit for demodulating a low-frequency received signal input from the RF circuit are mounted on a printed wiring board, between the chip antenna and the digital circuit, and The printed wiring board force was used which had a conductor extending to a predetermined height and having one end connected to the ground conductor of the printed wiring board.
- a chip antenna having an electrical length corresponding to 1Z4 wavelength of a radio wave of a desired frequency, and a received signal input from the chip antenna is amplified and reduced in frequency.
- An RF circuit and a digital circuit for demodulating a low-frequency received signal input from the RF circuit cable are mounted on a printed wiring board, and are provided between the chip antenna and the digital circuit. And having a conductor extending from the printed wiring board to a predetermined height, having an electrical length corresponding to the 1Z4 wavelength of the radio wave, and having one end connected to the ground conductor of the printed wiring board. It was adopted.
- the conductor is a substantially L-shaped member in which a long metal member is bent at a substantially right angle at a position close to one end.
- the end force far from the bent portion is connected to the ground conductor at the end closer to the bent portion so that the portion up to the bent portion is substantially parallel to the printed wiring board.
- the other end is an open end.
- the power amplifier is prevented from oscillating by attaching the radio wave absorber to the conductor, by providing a conductor that impairs the function of suppressing the influence of noise on the chip antenna. It is possible to prevent power amplifier oscillation, which is a new problem that occurs.
- FIG. 1 is a perspective view showing an external appearance of a communication device when a radio wave absorber is not added to a conductor according to an embodiment of the present invention.
- FIG. 2 is a graph showing a transmission spectrum when a power amplifier of a communication device is oscillating when a radio wave absorber is not added to a conductor according to an embodiment of the present invention.
- FIG. 3 is a graph showing a stability index between a chip antenna and an L-shaped sheet metal power amplifier of a communication device when a radio wave absorber is not added to a conductor in an embodiment of the present invention.
- FIG. 4A is a perspective view showing an appearance of a communication device when a radio wave absorber is added to a conductor in one embodiment of the present invention.
- FIG. 4B is a perspective view showing a conductor and a radio wave absorber in an embodiment of the present invention.
- FIG. 5 is a graph showing a transmission spectrum of a communication device when a radio wave absorber is added according to an embodiment of the present invention.
- FIG. 6 is a graph showing a stability index between a chip antenna, an L-shaped sheet metal, and a power amplifier of a communication device when a radio wave absorber is added according to an embodiment of the present invention.
- FIG. 7 is a perspective view showing an appearance of a communication device in one embodiment of the present invention.
- FIG. 8 is a perspective view showing the appearance and dimensions of an L-shaped sheet metal in an embodiment of the present invention.
- FIG. 9 is a graph showing the noise floor improvement effect in an embodiment of the present invention. Explanation of symbols
- FIG. 1 is a perspective view showing the external appearance of the communication device before the power amplifier oscillation countermeasure is taken.
- This communication device is used by being housed in a PC card casing, and includes a printed wiring board 1, a chip antenna 2, an RF circuit section 3, a digital circuit section 4, and an L-shaped sheet metal. 5 (conductor).
- the RF circuit unit 3 includes a transmission unit 6 and a reception unit 7, and the transmission unit 6 includes an RFSAW filter 8, a power amplifier 9, an isolator 10, an RF switch 11, and a dielectric filter 12.
- the printed wiring board 1 includes a connector la at one end. Connector la is connected to the connector in the expansion slot of the notebook computer.
- the printed wiring board 1 On the printed wiring board 1, a chip antenna 2, an RF circuit unit 3, and a digital circuit unit 4 are mounted in order on the end force far from the connector la.
- the printed wiring board 1 has a ground conductor, to which an L-shaped metal plate 5 is connected.
- the chip antenna 2 is mounted such that its longitudinal direction is substantially orthogonal to the arrangement direction of the chip antenna 2, the RF circuit unit 3, and the digital circuit unit 4 on the printed wiring board 1.
- the chip antenna 2 captures the received radio wave and outputs it as a received signal to the receiving unit 7 of the RF circuit unit 3, while the transmission signal input from the transmitting unit 6 of the RF circuit unit 3 is transmitted in the air as the transmitted radio wave. Radiates to.
- the chip antenna 2 has an electrical length corresponding to the 1Z4 wavelength of the received or transmitted radio wave.
- the receiving unit 7 of the RF circuit unit 3 lowers the frequency of the signal (RF signal) input from the chip antenna 2 and outputs the signal to the digital circuit unit 4.
- the transmission unit 6 of the RF circuit unit 3 converts the input signal of the digital circuit unit 4 into a high frequency (RF signal) and outputs the signal to the chip antenna 2.
- the modulation signal input from the digital circuit unit 4 is input to the RFSAW filter 8 to be band-limited, and then input to the power amplifier 9. After being amplified and input to the dielectric filter 12 via the isolator 10 and the RF switch 11, the band is again limited, and then input to the chip antenna 2.
- the digital circuit unit 4 demodulates the signal input from the receiving unit 7 of the RF circuit unit 3 and outputs the demodulated signal to the connector la, while modulating the signal input from the connector la and transmits the signal to the transmitting unit 6 of the RF circuit unit 3. Output to.
- the L-shaped sheet metal 5 is obtained by bending a long sheet metal close to one end part at a substantially right angle at the heel position, and the end part 5b far from the bent part 5a is also bent. Near the bent portion 5a, the end portion 5d is connected to the ground conductor so that the portion 5c up to 5a is substantially parallel to the printed wiring board 1, and the other end portion 5b is an open end.
- the L-shaped sheet metal 5 has an electrical length corresponding to 1Z4 wavelength of radio waves having a transmission / reception frequency.
- the transmit / receive frequency of the chip antenna 2 is 1. 79 GHz band
- the appropriate dimensions of the L-shaped sheet metal 5 are, for example, a width of 6 mm, an open end 5b force, and the length of the part 5c up to the bent part 5a.
- the length from the bent part 5a to the end part 5d is 5mm.
- the L-shaped sheet metal 5 has a portion 5c from the open end 5b to the bent portion 5a between the chip antenna 2 and the digital circuit unit 4 and at a height of 5 mm from the printed wiring board 1. Further, the longitudinal direction of the portion 5c is provided so as to be substantially parallel to the longitudinal direction of the chip antenna 2 so as to extend to the position. [0024]
- FIG. 2 is a graph showing a transmission spectrum when the power amplifier 9 oscillates. As shown here: 1. In the above configuration where transmission is performed in the 79 GHz band, oscillation occurs near 1.7 GHz.
- Figure 3 is a graph showing the stability index between chip antenna L-shaped sheet metal power amplifiers.
- the stabilization index is also called the K factor, and is an index that indicates the stable operation of amplifiers, etc., and is obtained by the following equation (1) using the S parameter that represents the transfer characteristics of the circuit.
- the stability index has deteriorated around 1.7 GHz due to oscillation of the power amplifier 9.
- FIGS. 4A and 4B A configuration for solving the above problem is shown in FIGS. 4A and 4B.
- an electromagnetic wave absorber 13 is added to the L-shaped sheet metal 5.
- the force applied to the electromagnetic wave absorber 13 on the surface of the L-shaped sheet metal 5 facing the printed wiring board 1 and facing the power amplifier 9 is L-shaped. As long as it is on the sheet metal 5, other positions may be used, and similar results are obtained.
- An appropriate size of the radio wave absorber 13 is, for example, 5 mm long ⁇ 5 mm wide ⁇ 0.25 mm thick.
- various materials can be used as the electromagnetic wave absorber.
- an electromagnetic wave absorber formed by mixing synthetic rubber and metal magnetic powder into a sheet shape is easy to handle! It is easy to form in a desired shape and add it to the L-shaped sheet metal 5.
- FIG. 5 is a graph showing the transmission spectrum of the communication device having the configuration of FIGS. 4A and 4B. As shown here, oscillation is suppressed.
- FIG. 6 is a graph showing the stability index between the chip antenna and the L-shaped sheet metal power amplifier of the communication device configured as shown in FIGS. 4A and 4B. As shown here, the deterioration of the stabilization index around 1.7 GHz is improved.
- the communication device having the configuration shown in FIGS. 4A and 4B is provided with the L-shaped sheet metal 5.
- the L-shaped sheet metal 5 In addition to improving the reception performance of the chip antenna, it was possible to suppress the adverse effects caused by the provision of the L-shaped sheet metal 5, that is, the oscillation of the power amplifier 9.
- the conductor is realized by the L-shaped sheet metal 5.
- it may be of other shapes, for example, a metal round bar is bent. Things can be considered.
- the communication device As an example of the communication device, a device that is used while being stored in a PC card casing has been described. However, in the implementation, the communication device may be another device such as a portable terminal. Good.
- FIG. 7 is a perspective view showing an external appearance of the communication device according to the present embodiment.
- This communication device is used by being housed in a PC card casing, and includes a printed wiring board 21, a chip antenna 22, an RF circuit 23, a digital circuit 24, an L-shaped sheet metal 25 ( A conductor).
- the printed wiring board 21 includes a connector 21a at one end.
- the connector 21a is connected to the connector in the expansion slot of the notebook computer.
- the printed wiring board 21 On the printed wiring board 21, a chip antenna 22, an RF circuit 23, and a digital circuit 24 are mounted in order on the end force far from the connector 21 a.
- the printed wiring board 21 has a ground conductor, to which an L-shaped sheet metal 25 is connected.
- the chip antenna 22 is mounted such that its longitudinal direction is substantially orthogonal to the arrangement direction of the chip antenna 22, the RF circuit 23, and the digital circuit 24 on the printed wiring board 21.
- the chip antenna 22 captures the received radio wave and outputs it as a received signal to the RF circuit 23.
- the chip antenna 22 radiates the transmission signal input from the RF circuit 23 into the air as the transmitted radio wave. It has an electrical length equivalent to the 1Z4 wavelength of radio waves or transmitted radio waves.
- the RF circuit 23 amplifies and lowers the frequency of the signal (RF signal) input from the chip antenna 22 and outputs the signal to the digital circuit 24.
- the signal input to the digital circuit 24 also has a higher frequency (RF signal conversion). ) And output to the chip antenna.
- the digital circuit 24 demodulates the signal input from the RF circuit 23 and outputs it to the connector 21a, while modulating the signal input from the connector 21a and outputs it to the RF circuit 23.
- the L-shaped metal plate 25 is a long metal member bent at a substantially right angle at a position close to one end, and as shown in FIG. 8, the one farther from the bent portion 25a.
- the end 25d closer to the bend 25a is connected to the ground conductor so that the portion 25c from the end 25b to the bend 25a is substantially parallel to the printed wiring board 21, and the other end 25b is the open end. It is said that.
- the L-shaped sheet metal 25 has an electrical length corresponding to 1Z4 wavelength of radio waves having a transmission / reception frequency.
- the transmission / reception frequency of the chip antenna 22 is 1.79 GHz band
- the appropriate dimensions of the L-shaped metal plate 25 are, for example, the width of the end 25b from the open end 25b to the bent portion 25a is 25mm long. The length from the bend 25a to the end 25d is 5mm.
- the L-shaped metal plate 25 has a portion 25c from the open end 25b to the bent portion 25a between the chip antenna 22 and the digital circuit 24 and at a height of 5 mm from the printed wiring board 21. Further, the longitudinal direction of the portion 25 c is provided so as to be substantially parallel to the longitudinal direction of the chip antenna 22.
- FIG. 9 is a graph showing the results of measuring the noise floor improvement effect when a PC card containing the communication device configured as described above is installed in an expansion slot of a notebook computer.
- the solid line shows the noise floor when the L-shaped sheet metal 25 is provided as in the above configuration, and the broken line shows the noise floor when the L-shaped sheet metal 25 is not provided as before. .
- the noise floor without the L-shaped sheet metal 25 changes around -2. OdB over each frequency.
- the noise floor when the L-shaped sheet metal 25 is provided is improved by an average of 2 dB by providing the L-shaped sheet metal 25 which is lowered by about 0 to 4. OdB.
- the applicant presumes that the noise floor is improved because the distribution of the current flowing through the printed wiring board 21 changes due to the addition of the L-shaped sheet metal 25 and is less susceptible to noise. And then.
- this communication device when provided with the L-shaped sheet metal 25, reduces the adverse effects of noise and reduces the reception performance of the chip antenna by a low-cost and easy method. It could be excluded.
- the conductor is realized by the L-shaped sheet metal 25.
- other shapes may be used.
- a metal round bar may be used. It can be bent.
- the communication device As an example of the communication device, a device that is used while being stored in a PC card casing has been described. However, in the implementation, the communication device may be another device such as a portable terminal. Good.
- the power amplifier is prevented from oscillating by attaching the radio wave absorber to the conductor, by providing a conductor that impairs the function of suppressing the influence of noise on the chip antenna. It is possible to prevent power amplifier oscillation, which is a new problem that occurs.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/294,873 US8502737B2 (en) | 2006-03-28 | 2007-03-28 | Communication device |
CN200780010920XA CN101416351B (zh) | 2006-03-28 | 2007-03-28 | 通信装置 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006087467A JP4680110B2 (ja) | 2006-03-28 | 2006-03-28 | 通信装置 |
JP2006087466A JP4680109B2 (ja) | 2006-03-28 | 2006-03-28 | 通信装置 |
JP2006-087467 | 2006-03-28 | ||
JP2006-087466 | 2006-03-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007114165A1 true WO2007114165A1 (ja) | 2007-10-11 |
Family
ID=38563434
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/056641 WO2007114165A1 (ja) | 2006-03-28 | 2007-03-28 | 通信装置 |
Country Status (2)
Country | Link |
---|---|
US (1) | US8502737B2 (ja) |
WO (1) | WO2007114165A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102656744A (zh) * | 2009-12-17 | 2012-09-05 | 莱尔德技术股份有限公司 | 天线构造及其便携式无线电通信设备 |
KR101318877B1 (ko) | 2011-10-14 | 2013-10-17 | 삼성전자주식회사 | 휴대용 단말기 |
TWI538300B (zh) * | 2014-01-27 | 2016-06-11 | A resonant circuit capable of suppressing the interference between the high-frequency connector and the antenna | |
FR3044189B1 (fr) | 2015-11-19 | 2018-01-05 | Sagemcom Broadband Sas | Appareil electronique a emissions radio parasites limitees |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10126146A (ja) * | 1996-10-16 | 1998-05-15 | Mitsubishi Electric Corp | ミリ波平面アンテナ |
JPH10173434A (ja) * | 1996-12-12 | 1998-06-26 | Matsushita Electric Ind Co Ltd | 表面実装アンテナ |
JPH10270932A (ja) * | 1997-03-26 | 1998-10-09 | Tech Res & Dev Inst Of Japan Def Agency | 非対称性アンテナパターンを持つパッチアンテナ |
JP2000307339A (ja) * | 1999-04-15 | 2000-11-02 | Matsushita Electric Ind Co Ltd | 携帯型通信端末用アンテナ |
JP2002217631A (ja) * | 2001-01-22 | 2002-08-02 | Ntt Electornics Corp | 無線装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0964764A (ja) | 1995-08-30 | 1997-03-07 | Hitachi Ltd | 電子制御装置の配線方法 |
JPH09289471A (ja) | 1996-04-23 | 1997-11-04 | Hitachi Ltd | 無線通信カード |
ATE311020T1 (de) * | 2000-04-14 | 2005-12-15 | Hitachi Metals Ltd | Antennenanordnung und kommunikationsgerät mit einer derartigen antennenanordnung |
JP2001352208A (ja) | 2000-06-07 | 2001-12-21 | Sony Corp | 通信端末装置 |
KR100483044B1 (ko) * | 2002-05-21 | 2005-04-15 | 삼성전기주식회사 | 신호간섭 배제특성을 개선한 표면실장형 칩 안테나 및이를 사용하는 이동통신 장치 |
JP4027307B2 (ja) | 2003-12-04 | 2007-12-26 | シャープ株式会社 | 無線機装置 |
JP4511387B2 (ja) * | 2005-02-25 | 2010-07-28 | 京セラ株式会社 | 無線通信端末 |
KR100689475B1 (ko) * | 2005-04-27 | 2007-03-02 | 삼성전자주식회사 | 휴대 단말기의 내장형 안테나 장치 |
US8174452B2 (en) * | 2008-09-25 | 2012-05-08 | Apple Inc. | Cavity antenna for wireless electronic devices |
-
2007
- 2007-03-28 US US12/294,873 patent/US8502737B2/en not_active Expired - Fee Related
- 2007-03-28 WO PCT/JP2007/056641 patent/WO2007114165A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10126146A (ja) * | 1996-10-16 | 1998-05-15 | Mitsubishi Electric Corp | ミリ波平面アンテナ |
JPH10173434A (ja) * | 1996-12-12 | 1998-06-26 | Matsushita Electric Ind Co Ltd | 表面実装アンテナ |
JPH10270932A (ja) * | 1997-03-26 | 1998-10-09 | Tech Res & Dev Inst Of Japan Def Agency | 非対称性アンテナパターンを持つパッチアンテナ |
JP2000307339A (ja) * | 1999-04-15 | 2000-11-02 | Matsushita Electric Ind Co Ltd | 携帯型通信端末用アンテナ |
JP2002217631A (ja) * | 2001-01-22 | 2002-08-02 | Ntt Electornics Corp | 無線装置 |
Also Published As
Publication number | Publication date |
---|---|
US8502737B2 (en) | 2013-08-06 |
US20100231459A1 (en) | 2010-09-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US11075442B2 (en) | Broadband sub 6GHz massive MIMO antennas for electronic device | |
AU2012381197B2 (en) | Antenna device for portable terminal | |
CN106816706B (zh) | 天线结构及应用该天线结构的无线通信装置 | |
US10355758B2 (en) | Multi-band antennas and MIMO antenna arrays for electronic device | |
JP2006054847A (ja) | アンテナ装置 | |
US8558634B2 (en) | High-frequency coupler and communication device | |
WO2006001110A1 (ja) | アンテナ装置及び無線通信装置 | |
CN103515696A (zh) | 天线组件及具有该天线组件的无线通信装置 | |
US20100156738A1 (en) | Electromagnetic radiation apparatus and method for forming the same | |
WO2007114165A1 (ja) | 通信装置 | |
US8212727B2 (en) | Antenna and wireless transceiver using the same | |
JP2004260343A (ja) | 小型アンテナ装置 | |
JP4680109B2 (ja) | 通信装置 | |
JP2003101340A (ja) | ダイバーシティアンテナ及び無線通信装置 | |
JP3275513B2 (ja) | 移動体通信機 | |
JP2003051705A (ja) | 表面実装型アンテナおよびそれを用いた通信機 | |
JP4680110B2 (ja) | 通信装置 | |
JP4604853B2 (ja) | 無線通信装置用アダプタおよび無線通信装置 | |
KR101303153B1 (ko) | 안테나 장치 및 이를 구비하는 이동통신 단말기 | |
TW584978B (en) | Grounding module of antenna in portable electronic device | |
CN104103912B (zh) | 天线组件 | |
EP1557959B1 (en) | Terminal apparatus | |
CN101171752A (zh) | 发送装置及使用该发送装置的通信设备 | |
JP3429597B2 (ja) | 小形無線機 | |
JP3341830B2 (ja) | 送信装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 07740079 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 200780010920.X Country of ref document: CN |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 07740079 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12294873 Country of ref document: US |