CN100399708C - RF signal matching device of mobile communication terminal - Google Patents
RF signal matching device of mobile communication terminal Download PDFInfo
- Publication number
- CN100399708C CN100399708C CNB200610003415XA CN200610003415A CN100399708C CN 100399708 C CN100399708 C CN 100399708C CN B200610003415X A CNB200610003415X A CN B200610003415XA CN 200610003415 A CN200610003415 A CN 200610003415A CN 100399708 C CN100399708 C CN 100399708C
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- variable
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- 238000010295 mobile communication Methods 0.000 title claims abstract description 14
- 230000001105 regulatory effect Effects 0.000 claims abstract 4
- 238000000034 method Methods 0.000 claims description 16
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 244000287680 Garcinia dulcis Species 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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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
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/56—Modifications of input or output impedances, not otherwise provided for
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
- H03G3/3042—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power amplifiers
-
- 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
- H04B2001/0408—Circuits with power amplifiers
- H04B2001/0416—Circuits with power amplifiers having gain or transmission power control
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Transmitters (AREA)
Abstract
The present invention discloses one kind of RF signal matching device as one gain regulator for mobile communication terminal. In the mobile communication terminal with upper frequency converter, power amplifier and matching circuit, the matching circuit has variable capacitance diode and thus variable matching value, and the emitting gain regulating signal the baseband signal treating unit outputs is connected to the variable matching circuit for regulating the matching value. Therefore, the present invention utilizes the emitting gain regulating signal the baseband signal treating unit in the emitting terminal uses in controlling emitting signal level and thus can match RF signal positively and effectively.
Description
Technical field
The invention belongs to the mobile communication terminal gain regulator, be particularly related to a kind of transmitting gain of the base band signal process portion use of terminal sending part that utilizes and adjust signal, control transmission signal level, thereby can mate the RF signal matching device of the mobile communication terminal of radiofrequency signal actively, efficiently.
Background technology
Fig. 1 is that the mobile communication terminal sending part constitutes block diagram in the past, and as shown in the figure, it is made of following several sections: upconverter 20, and it is to gain adjustments (AGC) and exporting of the data (I/Q Data) of base band signal process portion 10 outputs; Power amplifier 30, it carries out power amplification to the signal of upconverter 20 outputs, so that can export by antenna; Match circuit portion 40, it can mate the radiofrequency signal of power amplifier output.
At this moment, the signal of upconverter 20 outputs only filters the RF signal by SAW filter 50, is input to power amplifier 30.
In addition, base band signal process portion 10 utilizes transmitting gain to adjust signal controlling upconverter 20 and power amplifier 30, keeps certain transmitting power.
Wherein, the effect of upconverter 20 be to baseband signal because of the variable power that the traffic and signal gain (Gain) etc. causes compensates, make the output of input signal have certain gain, in addition, make output be maintained fixed.
, there are the following problems, promptly irrelevant with RF output, uses 50 Ω to mate or be fixed as the matching value of other purposes, therefore, and according to the difference of RF output, the inefficiency of the current sinking except that the RF delivery efficiency.
Summary of the invention
The object of the present invention is to provide a kind of radio frequency (RF) signal matching device of mobile communication terminal.Be to utilize the transmitting gain of the base band signal process portion use of terminal sending part to adjust signal specifically, the control transmission signal level, thus can mate radiofrequency signal actively, efficiently.
For realizing this purpose, the present invention is directed to comprising mobile communication terminal as the lower part: upconverter, it is to gain adjustments (AGC) and exporting of the data (I/Q Data) of base band signal process portion output; Power amplifier (PAM), it carries out power amplification to the signal of above-mentioned upconverter output, so that can export by antenna; Match circuit portion, it can mate the radiofrequency signal of above-mentioned power amplifier output.Feature of the present invention is: utilize variable capacitance diode that above-mentioned match circuit portion is become variable matching circuit portion for variable matching value; The transmitting gain of above-mentioned base band signal process portion output is adjusted signal (TX_AGC_ADJ) insert variable matching circuit portion, this matching value is adjusted.
Of the present inventionly to be intended to provide a kind of device, base band signal process portion in order to control launching electrical level with the output signal of pulse density modulated PDM form, the difference that has signal level because of the difference of RF output, sort signal is converted to DC level, by having the variable capacitance diode of different capabilities with the difference of voltage, as the active RF matching value that changes with RF output, thus the characteristic that can manage RF characteristic and current sinking efficiently.
The invention has the beneficial effects as follows that the employed transmitting gain of the base band signal process portion that utilizes the terminal sending part adjusts signal and control transmission signal level, thereby can mate radiofrequency signal actively, efficiently.
Description of drawings
Fig. 1 is that the sending part of mobile communication terminal in the past constitutes block diagram.
Fig. 2 is the formation block diagram of the RF signal matching device of mobile communication terminal of the present invention.
The symbol description of accompanying drawing major part
100: the 100a of variable matching circuit portion, 100b: variable capacitance diode
201,202:RC filter
Embodiment
The invention provides a kind of coalignment that transmits of mobile communication terminal.Be to utilize the transmitting gain of the base band signal process portion use of terminal sending part to adjust signal specifically, control transmission signal level, thereby can mate the device of radio frequency (RF) signal actively, efficiently.
With reference to the accompanying drawings, describe useful embodiment of the present invention in detail.
At first it should be noted that giving to the inscape of each accompanying drawing aspect the reference marks,,, but also given identical symbol as far as possible even be shown in the different accompanying drawings for identical inscape.
In addition, in following explanation, concrete numerous specific details such as handling process have been shown, so that more fully understand the present invention.Do not having under the situation of these specific details, the present invention still can implement, and this is that to have this technical field Chang Shizhe self-explantory.
And, think well-known function and the formation that may obscure main idea of the present invention for judgement, omitted detailed description thereof.
Fig. 2 is the formation block diagram of radio frequency (RF) signal matching device of mobile communication terminal of the present invention, as shown in the figure, it is constructed as follows: utilize variable capacitance diode 100a and 100b to constitute variable matching circuit portion 100, the transmitting gain that base band signal process portion 10 export for control upconverter 20 and power amplifier 30 is adjusted signal access variable matching circuit portion 100.At this moment, above-mentioned transmitting gain is adjusted signal to be base band signal process portion 10 with the output of PDM form and to be converted to the signal of DC level, in order to regulate this DC level, has added a plurality of RC filters 201,202.Therefore, adjust signal with above-mentioned transmitting gain and regulate the matching value of variable matching circuit portion 100 pro rata, its actual adjusted value is adjusted by the RC filter, thereby can be set to the matching value of needs.
That is to say, in base band signal process portion 10, adjust the required transmitting gain adjustment signal of transmit signal strength and be converted to DC voltage level through RC filter 201 by PDM, the voltage level access power amplifier 30 of conversion utilizes the voltage strength that inserts to adjust the gain of power amplifier 30.
For example, output HIGH voltage when the RF signal is strong, output LOW voltage when a little less than the RF signal.
The variable capacitance diode 100a of above-mentioned variable matching circuit portion 100 and the accessory characteristic of 100b are that capacitor volume is according to voltage level and different, when utilizing this specific character, when constituting the RF match circuit with variable condenser capacity, according to the strong still weak difference that output occurs, matching value is linear and adjusts.
Certainly, can adjust DC level, adjust this matching value with this by RC filter 201 and 202.
That is to say, conventional art can't obtain RF output efficiently (and current sinking) characteristic because of fixing matching value, but the present invention is used for the PDM signal that the transmission signal level that changes with RF output is controlled is adjusted the RF matching value, thereby can obtain RF output characteristic efficiently.
Claims (1)
1. the RF signal matching device of a mobile communication terminal comprises: upconverter, and it gains to the data of base band signal process portion output and adjusts and output; Power amplifier, it carries out power amplification to the signal of above-mentioned upconverter output, so that can export by antenna; Match circuit portion, it can mate the radiofrequency signal of above-mentioned power amplifier output, it is characterized in that: utilize first variable capacitance diode (100a) and second variable capacitance diode (100b) that above-mentioned match circuit portion is constituted variable matching circuit portion (100), the transmitting gain that base band signal process portion (10) export for control upconverter (20) and power amplifier (30) is adjusted signal access variable matching circuit portion (100), at this moment, it is base band signal process portion (10) exported and be converted to DC level with the PDM form signal that above-mentioned transmitting gain is adjusted signal, in order to regulate this DC level, a plurality of RC filters have been added; Therefore, adjust the matching value that signal is regulated variable matching circuit portion (100) pro rata with above-mentioned transmitting gain, its actual adjusted value is adjusted by the RC filter, thereby can be set to the matching value of needs.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050013777 | 2005-02-18 | ||
| KR1020050013777A KR100641186B1 (en) | 2005-02-18 | 2005-02-18 | Transmission signal matching device of mobile communication terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1822512A CN1822512A (en) | 2006-08-23 |
| CN100399708C true CN100399708C (en) | 2008-07-02 |
Family
ID=36923613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610003415XA Expired - Fee Related CN100399708C (en) | 2005-02-18 | 2006-02-06 | RF signal matching device of mobile communication terminal |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100641186B1 (en) |
| CN (1) | CN100399708C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8750414B2 (en) * | 2007-07-31 | 2014-06-10 | Broadcom Corporation | Method and system for polar modulation with discontinuous phase |
| KR100985473B1 (en) * | 2008-09-03 | 2010-10-05 | 연세대학교 산학협력단 | Low Noise Amplifier Using Variable Capacitance Diode and Its Driving Method |
| US8774742B2 (en) * | 2012-01-18 | 2014-07-08 | Qualcomm Incorporated | High efficiency transmitter |
| CN102882477B (en) * | 2012-09-19 | 2016-03-30 | 昆山华太电子技术有限公司 | The RF power device of adjustable operating frequency |
| CN104639200B (en) * | 2013-11-07 | 2019-06-18 | 深圳富泰宏精密工业有限公司 | Wireless communication device |
| CN104639202A (en) * | 2013-11-15 | 2015-05-20 | 深圳富泰宏精密工业有限公司 | Wireless communication device |
| CN104638362B (en) * | 2013-11-15 | 2019-05-21 | 深圳富泰宏精密工业有限公司 | Wireless communication device |
| CN104539306B (en) * | 2014-11-10 | 2018-11-09 | 惠州Tcl移动通信有限公司 | The radio architectures and its matching process of Adaptive matching |
| CN110048975A (en) * | 2018-01-15 | 2019-07-23 | 中兴通讯股份有限公司 | Mobile terminal frequency compensation method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08288865A (en) * | 1995-04-14 | 1996-11-01 | Nec Corp | Automatic antenna matching device |
| US20030206141A1 (en) * | 2001-08-24 | 2003-11-06 | Broadcom Corporation | Active impedance matching in communications systems |
| KR20040107142A (en) * | 2003-06-12 | 2004-12-20 | 주식회사 팬택앤큐리텔 | Apparatus for controlling a load by use of pdm signal |
| US20050026573A1 (en) * | 2003-07-30 | 2005-02-03 | Lg Electronics Inc. | Transmitting apparatus and method of mobile communication terminal |
-
2005
- 2005-02-18 KR KR1020050013777A patent/KR100641186B1/en not_active Expired - Fee Related
-
2006
- 2006-02-06 CN CNB200610003415XA patent/CN100399708C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08288865A (en) * | 1995-04-14 | 1996-11-01 | Nec Corp | Automatic antenna matching device |
| US20030206141A1 (en) * | 2001-08-24 | 2003-11-06 | Broadcom Corporation | Active impedance matching in communications systems |
| KR20040107142A (en) * | 2003-06-12 | 2004-12-20 | 주식회사 팬택앤큐리텔 | Apparatus for controlling a load by use of pdm signal |
| US20050026573A1 (en) * | 2003-07-30 | 2005-02-03 | Lg Electronics Inc. | Transmitting apparatus and method of mobile communication terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20060092700A (en) | 2006-08-23 |
| KR100641186B1 (en) | 2006-11-06 |
| CN1822512A (en) | 2006-08-23 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: LANGCHAO LEJIN DIGITAL MOBILE COMMUNICATION CO., L Free format text: FORMER OWNER: LG ELECTRONIC (CHINA) RESEARCH + DEVELOPMENT CENTRE CO., LTD. Effective date: 20120309 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100022 CHAOYANG, BEIJING TO: 264001 YANTAI, SHANDONG PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20120309 Address after: 264001 No. 228 Changjiang Road, Yantai economic and Technological Development Zone, Shandong, China Patentee after: Langchao Lejin Digital Mobile Communication Co., Ltd. Address before: 100022 Beijing city Chaoyang District Jianguomenwai Street No. 12 b Gemini building 18 layer tower Patentee before: LG Electronic (China) Research and Development Center Co., Ltd. |
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| 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: 20080702 Termination date: 20170206 |