CN1684378A - Power amplifier mode selector of mobile communication terminal - Google Patents
Power amplifier mode selector of mobile communication terminal Download PDFInfo
- Publication number
- CN1684378A CN1684378A CNA2004101035841A CN200410103584A CN1684378A CN 1684378 A CN1684378 A CN 1684378A CN A2004101035841 A CNA2004101035841 A CN A2004101035841A CN 200410103584 A CN200410103584 A CN 200410103584A CN 1684378 A CN1684378 A CN 1684378A
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- China
- Prior art keywords
- power
- amplifier
- mentioned
- communication terminal
- mobile communication
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/14—Cutting, e.g. perforating, punching, slitting or trimming
- B31B70/16—Cutting webs
Abstract
The invention involves in a power amplifier mode selector of mobile communication terminal which will choose power amplifier of different power efficiency according to the power of sending signals. Only AB type power amplifier is used to amplify the power of transmitting signals transmitted from the modem in mobile station in existing structure of sending terminals. There is a limit to reduce to the minimum power consumption of transmitting signals, so problems remain in terms of stand-by time of mobile communication terminal and speaking time shortened. The invention chooses junction circuits according to power strength of transmitting signals of the modem in mobile station in view of these problems. So the effect of increasing stand-by time of mobile communication terminal and speaking time is achieved by choosing AB type power amplifier or E type power amplifier to make the power amplifier with the maximum power consumption work in the maximum efficiency.
Description
Technical field
The present invention relates to a kind of power amplifier mode selector (APPARATUS FORPOWER AMPLIFIER MODE SELECTION IN MOBILE COMMUNICATION DEVICE) of mobile communication terminal, particularly, power level according to the transmission signal of mobile station modems device transmission, select the power amplifier transmission to send signal, therefore can improve power efficiency.
Background technology
Accompanying drawing 1 is the structure chart of the mobile communication terminal transmitting terminal of prior art.As shown in the drawing, it structurally is made up of following components: transmission sends the mobile station modems device (MSM:Mobile Station Modem) 10 of signal; Receive this signal, and the upstream frequency transducer 20 of its frequency (RF:Radio Frequency) wave band from the baseband-converted to the high frequency; Reception is transformed into the transmission signal of high frequency (RF) audio range frequency, and the AB class of amplifying (Class AB) power amplifier 30; Utilize antenna transmission to amplify the duplexer (Duplexer) 40 that sends signal.
That is, mobile station modems device 10 is in case transmission sends signal, and upstream frequency transducer 20 is the frequency inverted of this signal a high frequency band just, and is delivered in the AB power-like amplifier.AB power-like amplifier 30 amplifies this again, is sent to antenna 50 by duplexer 40.
Above-mentioned AB power-like amplifier 30 utilizes grid (Gate) bias voltages (Bias) being inverted the operation principle that bias voltage takes place between (Deep Inversion) zone by (Cutoff) zone and the degree of depth, reduces power consumption, and makes to generate heat to dropping to and minimize.When starting AB power-like amplifier 30, average power during real work, reduce about about 3～4dB than maximum available power, make it reduce the distortion phenomenon of 90 degree phase shift keying (QSPK:Quadrature Phase Shift Keying) frequency variation signals, the while is the output line style of guaranteed output amplifier to a certain extent.
; for aforesaid prior art; existing transmitting terminal is on its structure; only use the AB power-like amplifier to amplify the transmission signal power of mobile station modems device transmission; exist: the maximum power efficiency of AB power-like amplifier is low, the problem points that causes the up duration of mobile communication terminal to reduce.
Summary of the invention
The present invention is in order to improve prior art the problems referred to above in actual mechanical process, a kind of power amplifier mode selector of mobile communication terminal is provided, its purpose is: according to the watt level that sends signal, selection utilizes the power amplifier of different capacity efficient, improved the power efficiency of mobile communication terminal, the stand-by time of mobile communication terminal and conversation all can be improved.For this reason, the power amplifier mode selector of mobile communication terminal of the present invention comprises: transmission sends signal, and exports the mobile station modems device of changeover control signal according to the watt level of above-mentioned transmission signal; Receive the transmission signal of above-mentioned mobile station modems device transmission, and it is converted to the upstream frequency transducer of high frequency band by the base band wave band; The transmission signal of above-mentioned upstream frequency transducer output, press AB power-like amplifier and E power-like amplifier that different capacity efficient is amplified separately; The transmission signal of above-mentioned upstream frequency transducer output,, select the converter section of above-mentioned AB power-like amplifier or above-mentioned E power-like amplifier input by above-mentioned changeover control signal; By antenna, the duplexer that the transmission signal of above-mentioned AB power-like amplifier or above-mentioned E power-like amplifier output is sent.
Described switch site is in the rear end of described AB power-like amplifier and E power-like amplifier, the output transmission signal of described upstream frequency transducer is inputed in described AB power-like amplifier and the E power-like amplifier jointly, meanwhile select the output of its described AB power-like amplifier and E power-like amplifier, input in the described duplexer.
The present invention has following effect: the watt level of the transmission signal of transmission mobile station modems, than maximum power value ad hoc in the mobile station modems hour, utilize the E power-like amplifier of high-power efficient, increase the stand-by time and the air time of mobile communication terminal, if when bigger than maximum power value, utilize the AB power-like amplifier to reduce to send the distortion of signal, and ensure line style.
Description of drawings
Fig. 1 is the structural representation of the mobile communication terminal transmitting terminal of prior art;
Fig. 2 is the structural representation of the mobile communication terminal transmitting terminal that comprises power amplifier mode selector of the embodiment of the invention.
The drawing reference numeral explanation:
10,100, mobile station modems device (MSM)
20,200, upstream frequency transducer 30,300, AB power-like amplifier
310, E power-like amplifier 40,400, duplexer
50,500, antenna 600, converter section
Embodiment
In order to finish aforesaid purpose, the present invention is made up of following components, and transmission sends signal, and exports the mobile station modems device of changeover control signal according to the watt level of above-mentioned transmission signal; Receive the transmission signal of above-mentioned mobile station modems device transmission, and it is converted to the upstream frequency transducer of high frequency band by the base band wave band; The transmission signal of above-mentioned upstream frequency transducer output, press AB power-like amplifier and E power-like amplifier that different capacity efficient is amplified separately; The transmission signal of above-mentioned upstream frequency transducer output,, select the converter section of above-mentioned AB power-like amplifier or above-mentioned E power-like amplifier input by above-mentioned changeover control signal; By antenna, the duplexer that the transmission signal of above-mentioned AB power-like amplifier or above-mentioned E power-like amplifier output is sent.
Below in conjunction with accompanying drawing, be described in detail for specific embodiments of the invention.
Accompanying drawing 2 is structural representations of the mobile communication terminal transmitting terminal that comprises power amplifier mode selector of the embodiment of the invention.As shown in the drawing, it structurally is made up of following components: transmission sends signal, and the mobile station modems device 100 of output changeover control signal; Receive above-mentioned transmission signal, and it is converted to the upstream frequency transducer 200 of high frequency band by the base band wave band; The transmission signal of above-mentioned upstream frequency transducer 200 outputs, press AB power-like amplifier 300 and E power-like amplifier 310 that different capacity efficient is amplified separately; According to above-mentioned changeover control signal, a side terminal a who is connected with the AB power-like amplifier by common terminal c or the opposite side terminal b conversion that is connected by the E power-like amplifier, and the transmission signal of above-mentioned upstream frequency transducer 200 outputs, to the converter section 600 of AB power-like amplifier or E power-like amplifier selection input; The transmission signal that has been exaggerated that above-mentioned class ab ammplifier 300 or E class A amplifier A 310 are provided transfers to the duplexer 400 of antenna 500.
When mobile station modems 100 sends signal to 200 transmission of upstream frequency transducer, to converter section 600 output changeover control signals, by this changeover control signal, when if the transmission signal power of transmission is bigger than maximum power value (P max) ad hoc in the mobile station modems 100, the common terminal c of converter section 600 is connected with a side terminal a, and sends signal to 300 inputs of AB power-like amplifier; If than maximum power value (P max) hour, the common terminal c of converter section 600 is connected with opposite side terminal b, and import the transmission signals to E power-like amplifier 310.
Converter section 600 is according to changeover control signal, and common terminal c is connected with a side terminal a or opposite side terminal b, and the transmission signal-selectivity of upstream frequency transducer 200 outputs is input in class ab ammplifier 300 or the E class A amplifier A 310, plays transformation thus.
Class ab ammplifier 300 reduces the input rank of power amplifier, moves in the range of linearity, reduces the high frequency distortion in the output, also has 78% power efficiency when abnormal work occurring; E class A amplifier A 310 is with big input signal switching power amplifier, and utilizes the capacitor (Capacitor) of output can obtain 100% theoretic efficient.
Duplexer 200 is the devices that connect transmitting terminal and antenna 500.It is connected with antenna 500, plays and only passes through the required signal of conversation, filters the unnecessary signal and the effect of noise.
Check the action of the power amplifier mode selector of the mobile communication terminal that constitutes as mentioned above below in detail.
At first, on mobile station modems device 100, utilize 200 transmission of upstream frequency transducer to send signal, and control signal is sent to converter section 600.Its control signal: when bigger than maximum power value ad hoc in the mobile station modems device 100, make common terminal c connect a side terminal a as if the transmission signal power size of transmitting; If than maximum power value hour, then make common terminal c connect opposite side terminal b.
The upstream frequency transducer 200 of the transmission signal input of reception mobile station modems device 100 transmission from baseband-converted tremendously high frequency (RF) wave band, is delivered to converter section 600 to the frequencies that send signal.If when the transmission signal power of mobile station modems device 100 transmission was bigger than maximum power value (P max), converter section 600 connected a side terminal a to common terminal c according to changeover control signal, send signal to 300 inputs of AB power-like amplifier; On the other hand, if the transmission signal power of mobile station modems device 100 transmission is than maximum power value (P max) hour, converter section 600 connects opposite side terminal b to common terminal c according to changeover control signal, sends signal for 310 inputs of E power-like amplifier.Then, AB power-like amplifier or E power-like amplifier receive the input that sends signal, amplify back output by different power efficiencies separately, and duplexer 400 sends out the transmission signal of output by antenna 500.
In another embodiment of the present invention, converter section 600 is placed the rear end (not shown) of AB power-like amplifier 300 and E power-like amplifier 310, according to changeover control signal, select to utilize AB power-like amplifier 300 and E power-like amplifier 310 to amplify and send signal.That is, mobile station modems 100 transmission send signal, and export the changeover control signal of corresponding transmission signal power strength.If mobile station modems 100 transmission send signal, upstream frequency transducer 200 is imported frequency inverted tremendously high frequency (RF) wave band jointly to AB power-like amplifier and E power-like amplifier.At this moment, converter section 600 is selected the output of AB power-like amplifier and E power-like amplifier to input in the duplexer 400, and is sent by antenna 500 according to changeover control signal.
The above is specific embodiments of the invention only, is not to be used to limit protection scope of the present invention.All within above-mentioned spirit of the present invention and principle, any modification and the improvement done all should be included within the claim scope of the present invention.
Claims (2)
1, a kind of power amplifier mode selector of mobile communication terminal is characterized in that comprising: transmission sends signal, and exports the mobile station modems device of changeover control signal according to the watt level of above-mentioned transmission signal; Receive the transmission signal of above-mentioned mobile station modems device transmission, and it is converted to the upstream frequency transducer of high frequency band by the base band wave band; The transmission signal of above-mentioned upstream frequency transducer output, press AB power-like amplifier and E power-like amplifier that different capacity efficient is amplified separately; The transmission signal of above-mentioned upstream frequency transducer output,, select the converter section of above-mentioned AB power-like amplifier or above-mentioned E power-like amplifier input by above-mentioned changeover control signal; By antenna, the duplexer that the transmission signal of above-mentioned AB power-like amplifier or above-mentioned E power-like amplifier output is sent.
2, the power amplifier mode selector of mobile communication terminal according to claim 1, it is characterized in that: described switch site is in the rear end of described AB power-like amplifier and E power-like amplifier, the output transmission signal of described upstream frequency transducer is inputed in described AB power-like amplifier and the E power-like amplifier jointly, meanwhile select the output of its described AB power-like amplifier and E power-like amplifier, input in the described duplexer.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020040025528 | 2004-04-13 | ||
| KR1020040025528A KR20050100300A (en) | 2004-04-13 | 2004-04-13 | Apparatus for power amplifier mode selection in mobile communication device |
| KR10-2004-0025528 | 2004-04-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1684378A true CN1684378A (en) | 2005-10-19 |
| CN100425007C CN100425007C (en) | 2008-10-08 |
Family
ID=35263540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004101035841A Expired - Fee Related CN100425007C (en) | 2004-04-13 | 2004-12-30 | Power amplifier mode selector of mobile communication terminal |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20050100300A (en) |
| CN (1) | CN100425007C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101792260B1 (en) | 2011-09-01 | 2017-11-02 | 삼성전기주식회사 | Power amplifier for time division multiple access |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3171141B2 (en) * | 1997-06-06 | 2001-05-28 | 日本電気株式会社 | Mobile communication transmitter and control method thereof |
| US6681101B1 (en) * | 2000-01-11 | 2004-01-20 | Skyworks Solutions, Inc. | RF transmitter with extended efficient power control range |
| US6288608B1 (en) * | 2000-04-28 | 2001-09-11 | International Business Machines Corporation | Radio frequency power amplifier for a battery powered handset unit of a wireless communications system |
| US6496063B2 (en) * | 2000-12-04 | 2002-12-17 | Texas Instruments Incorporated | Selectable diode bias for power amplifier control in a wireless telephone handset |
-
2004
- 2004-04-13 KR KR1020040025528A patent/KR20050100300A/en not_active Application Discontinuation
- 2004-12-30 CN CNB2004101035841A patent/CN100425007C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN100425007C (en) | 2008-10-08 |
| KR20050100300A (en) | 2005-10-18 |
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| C06 | Publication | ||
| 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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081008 Termination date: 20100201 |