CN1230089A - 移动电话机 - Google Patents
移动电话机 Download PDFInfo
- Publication number
- CN1230089A CN1230089A CN98105829A CN98105829A CN1230089A CN 1230089 A CN1230089 A CN 1230089A CN 98105829 A CN98105829 A CN 98105829A CN 98105829 A CN98105829 A CN 98105829A CN 1230089 A CN1230089 A CN 1230089A
- Authority
- CN
- China
- Prior art keywords
- filter
- voltage
- telephone
- output
- power
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/50—Circuits using different frequencies for the two directions of communication
- H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
- H04B1/525—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/02—Automatic frequency control
- H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
- H03J7/047—Automatic frequency control using an auxiliary signal, e.g. low frequency scanning of the locking range or superimposing a special signal on the input signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0475—Circuits with means for limiting noise, interference or distortion
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmitters (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims (8)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9620226A GB2317760B (en) | 1996-09-27 | 1996-09-27 | Mobile telephone apparatus |
US09/028,813 US6212367B1 (en) | 1996-09-27 | 1998-02-24 | Mobile telephone apparatus with tunable filter tuned to the transmit band |
CNB981058299A CN1146273C (zh) | 1996-09-27 | 1998-03-19 | 移动电话机 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9620226A GB2317760B (en) | 1996-09-27 | 1996-09-27 | Mobile telephone apparatus |
US09/028,813 US6212367B1 (en) | 1996-09-27 | 1998-02-24 | Mobile telephone apparatus with tunable filter tuned to the transmit band |
AU56421/98A AU769330B2 (en) | 1998-03-02 | 1998-03-02 | Mobile telephone apparatus |
CNB981058299A CN1146273C (zh) | 1996-09-27 | 1998-03-19 | 移动电话机 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1230089A true CN1230089A (zh) | 1999-09-29 |
CN1146273C CN1146273C (zh) | 2004-04-14 |
Family
ID=27423519
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB981058299A Expired - Fee Related CN1146273C (zh) | 1996-09-27 | 1998-03-19 | 移动电话机 |
Country Status (3)
Country | Link |
---|---|
US (1) | US6212367B1 (zh) |
CN (1) | CN1146273C (zh) |
GB (1) | GB2317760B (zh) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102870333A (zh) * | 2010-02-24 | 2013-01-09 | 华为技术有限公司 | 无线通信收发器中rf干扰信号和噪声的抑制 |
CN103095332A (zh) * | 2011-10-28 | 2013-05-08 | 美国博通公司 | 具有可编程陷波滤波器的发送器前端及其使用方法 |
CN104184527A (zh) * | 2013-05-21 | 2014-12-03 | 联发科技(新加坡)私人有限公司 | 传送功率测量装置以及传送功率测量方法 |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2376823B (en) * | 2001-06-20 | 2005-05-18 | Ericsson Telefon Ab L M | Communications device |
US6934557B2 (en) * | 2001-09-27 | 2005-08-23 | Kabushiki Kaisha Toshiba | Portable type radio equipment |
US6825713B2 (en) * | 2001-12-11 | 2004-11-30 | International Business Machines Corporation | System and method for bandwidth estimation of an integrated filter |
KR100473164B1 (ko) * | 2002-10-15 | 2005-03-10 | 주식회사 팬택 | 파워 검출기를 이용한 트랙킹 필터 |
WO2004082135A2 (en) * | 2003-03-12 | 2004-09-23 | Analog Devices, Inc. | Closed loop power control of non-constant envelope waveforms using sample/hold |
US7761067B1 (en) | 2003-05-15 | 2010-07-20 | Marvell International Ltd. | Iterative filter circuit calibration |
US7587175B2 (en) * | 2003-10-20 | 2009-09-08 | Broadcom Corporation | Radio frequency unit analog level detector and feedback control system |
DE102006052873B4 (de) * | 2006-11-09 | 2013-07-11 | Siemens Aktiengesellschaft | Filter-Schaltungsanordnung |
TW201014213A (en) * | 2008-09-29 | 2010-04-01 | Realtek Semiconductor Corp | WLAN transceiving system |
US8471550B2 (en) | 2010-05-05 | 2013-06-25 | Javelin Semiconductor | Delivered power detection for power amplifiers and related systems and methods |
US8244194B2 (en) | 2010-07-08 | 2012-08-14 | Javelin Semiconductor, Inc. | Narrow-band tunable radio frequency (RF) power amplifiers and related methods |
GB2492516B (en) * | 2012-01-09 | 2013-12-04 | Renesas Mobile Corp | Method and apparatus for time division duplex communication |
GB2498212B (en) | 2012-01-09 | 2013-12-04 | Renesas Mobile Corp | Method and apparatus for time division duplex communication |
JP2021175084A (ja) * | 2020-04-24 | 2021-11-01 | 株式会社村田製作所 | 高周波回路および通信装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2092845A (en) * | 1981-01-30 | 1982-08-18 | Redifon Telecomm | Radio communication system |
US4422047A (en) * | 1981-11-23 | 1983-12-20 | E-Systems, Inc. | Solid state autotune power amplifier |
US4618997A (en) * | 1984-03-23 | 1986-10-21 | General Research Of Electronics, Inc. | Portable transceiver |
US5239686A (en) * | 1991-04-29 | 1993-08-24 | Echelon Corporation | Transceiver with rapid mode switching capability |
FI91469C (fi) * | 1992-03-31 | 1994-06-27 | Nokia Telecommunications Oy | Menetelmä RF-kaistanpäästösuodattimen virittämiseksi |
GB2276293B (en) * | 1993-03-19 | 1996-11-13 | Motorola Gmbh | An isolation circuit and method of operation thereof |
-
1996
- 1996-09-27 GB GB9620226A patent/GB2317760B/en not_active Expired - Fee Related
-
1998
- 1998-02-24 US US09/028,813 patent/US6212367B1/en not_active Expired - Lifetime
- 1998-03-19 CN CNB981058299A patent/CN1146273C/zh not_active Expired - Fee Related
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102870333A (zh) * | 2010-02-24 | 2013-01-09 | 华为技术有限公司 | 无线通信收发器中rf干扰信号和噪声的抑制 |
CN102870333B (zh) * | 2010-02-24 | 2014-12-10 | 华为技术有限公司 | 无线收发器、自适应负电导电路及校准陷波滤波器方法 |
US9166636B2 (en) | 2010-02-24 | 2015-10-20 | Huawei Technologies Co., Ltd. | Rejection of RF interferers and noise in a wireless communications transceiver |
CN103095332A (zh) * | 2011-10-28 | 2013-05-08 | 美国博通公司 | 具有可编程陷波滤波器的发送器前端及其使用方法 |
US9065504B2 (en) | 2011-10-28 | 2015-06-23 | Broadcom Corporation | Transmitter front end with programmable notch filter and methods for use therewith |
CN103095332B (zh) * | 2011-10-28 | 2016-08-24 | 美国博通公司 | 具有可编程陷波滤波器的发送器前端及其使用方法 |
CN104184527A (zh) * | 2013-05-21 | 2014-12-03 | 联发科技(新加坡)私人有限公司 | 传送功率测量装置以及传送功率测量方法 |
CN104184527B (zh) * | 2013-05-21 | 2017-04-12 | 联发科技(新加坡)私人有限公司 | 传送功率测量装置以及传送功率测量方法 |
US9712169B2 (en) | 2013-05-21 | 2017-07-18 | Mediatek Singapore Pte. Ltd. | Transmit power measurement apparatus having programmable filter device that is set at least based on frequency response of transmit power detection path and related transmit power measurement method thereof |
Also Published As
Publication number | Publication date |
---|---|
CN1146273C (zh) | 2004-04-14 |
GB9620226D0 (en) | 1996-11-13 |
US6212367B1 (en) | 2001-04-03 |
GB2317760A (en) | 1998-04-01 |
GB2317760B (en) | 2000-09-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C06 | Publication | ||
PB01 | Publication | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: LENOVO INNOVATION CO., LTD. (HONGKONG) Free format text: FORMER OWNER: NEC CORP. Effective date: 20141125 |
|
C41 | Transfer of patent application or patent right or utility model | ||
COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; TO: HONG KONG, CHINA |
|
TR01 | Transfer of patent right |
Effective date of registration: 20141125 Address after: Hongkong, China Patentee after: LENOVO INNOVATIONS Co.,Ltd.(HONG KONG) Address before: Tokyo, Japan Patentee before: NEC Corp. |
|
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040414 Termination date: 20160319 |