Patent US7110730B2 successfully refreshed from Google Patents.
US7110730B2
Expired / Lapsed
US
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Apparatus for mobile communication system which performs signal transmission by amplitude modulation and phase modulation
Assignee: TTP Communications Ltd
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Filing: 2003-02-26
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Granted: 2006-09-19
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Expires: 2023-02-26
Abstract
Abstract A mobile communication system has a mobile phone in which a voltage is set corresponding to the characteristic variation of a PA even when a PA having characteristic variation is used. The mobile phone employs a polar loop method, which comprises an antenna ( 1 ) for transmission and reception of signal waves; an antenna switch ( 2 ) for switching the transmission mode and the reception mode; a BBLSI ( 3 ) having a function to control the transmission and reception; an RFIC ( 4 ) having a function for modulating and demodulating the transmitted and received signals; and a PA ( 5 ) for amplifying up to the target output power by means of the amplitude modulation at the time of the transmission.
Inventors
- 👤 Kazuhisa Okada
- 👤 Kazuhiko Hikasa
- 👤 Patrick Wurm
- 👤 David Freeborough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:27
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/02; H03F1/0205; H03F1/0211; H03F1/0261; H03F1/0272; H03F1/0266; H03F1/30; H03F1/32; H03F1/34; H03F1/345; H03F2200/00; H03F2200/504; H04; H04B; H04B1/00; H04B1/02; H04B1/04; H04B2001/0408; H04B2001/0416
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
197 words
An apparatus for mobile communication system which performs signal transmission by amplitude modulation and phase modulation, comprising: a power amplifier for amplifying a transmitting signal; a control circuit for controlling transmitting and receiving of signals and capable of supplying a predetermined characteristic data for a bias voltage or a power source voltage of said power amplifier; a radio frequency circuit for modulating the transmitting signal and demodulating a receiving signal; and a controllable voltage source which receives said predetermined characteristic data from said control circuit and provides said bias voltage or said power source voltage in accordance with said predetermined characteristic data, wherein said controllable voltage source includes a register for receiving and storing said predetermined characteristic data at a time of switching ON the apparatus and a digital to analog converter to output said bias voltage or said power source voltage based on said predetermined characteristic data stored in said register, and wherein said controllable voltage source is included in said radio frequency circuit, and a connection for setting said bias voltage or said power source voltage between said power amplifier and said radio frequency circuit or said control circuit is formed by an analog interface.
Claim 2
Independent Claim
197 words
An apparatus for mobile communication system which performs signal transmission by amplitude modulation and phase modulation, comprising: a power amplifier for amplifying a transmitting signal; a control circuit for controlling transmitting and receiving of signals and capable of supplying a predetermined characteristic data for a bias voltage or a power source voltage of said power amplifier; a radio frequency circuit for modulating the transmitting signal and demodulating a receiving signal; and a controllable voltage source which receives said predetermined characteristic data from said control circuit and provides said bias voltage or said power source voltage in accordance with said predetermined characteristic data, wherein said controllable voltage source includes a register for receiving and storing said predetermined characteristic data at a time of switching ON the apparatus and a digital to analog converter to output said bias voltage or said power source voltage based on said predetermined characteristic data stored in said register, and wherein said controllable voltage source is included in said radio frequency circuit, and a connection for setting said bias voltage or said power source voltage between said power amplifier and said radio frequency circuit or said control circuit is formed by an analog interface.
Claim 3
Independent Claim
194 words
An apparatus for mobile communication system, which performs signal transmission by amplitude modulation and phase modulation, comprising: a power amplifier for amplifying a transmitting signal; a control circuit for controlling transmitting and receiving of signals and capable of supplying a predetermined characteristic data for a bias voltage or a power source voltage of said power amplifier; a radio frequency circuit for modulating the transmitting signal and demodulating a receiving signal; and a controllable voltage source which receives said predetermined characteristic data from said control circuit and provides said bias voltage or said power source voltage in accordance with said predetermined characteristic data, wherein said controllable voltage source including a register for receiving and storing said predetermined characteristic data at a time of switching ON the apparatus and a digital to analog converter to output said bias voltage or said power source voltage based on said predetermined characteristic data stored in said register, and wherein said controllable voltage source is included in said control circuit, and a connection for setting said bias voltage or said power source voltage between said power amplifier and said control circuit is formed by a serial interface using digital signal.
Claim 4
Independent Claim
194 words
An apparatus for mobile communication system, which performs signal transmission by amplitude modulation and phase modulation, comprising: a power amplifier for amplifying a transmitting signal; a control circuit for controlling transmitting and receiving of signals and capable of supplying a predetermined characteristic data for a bias voltage or a power source voltage of said power amplifier; a radio frequency circuit for modulating the transmitting signal and demodulating a receiving signal; and a controllable voltage source which receives said predetermined characteristic data from said control circuit and provides said bias voltage or said power source voltage in accordance with said predetermined characteristic data, wherein said controllable voltage source including a register for receiving and storing said predetermined characteristic data at a time of switching ON the apparatus and a digital to analog converter to output said bias voltage or said power source voltage based on said predetermined characteristic data stored in said register, and wherein said controllable voltage source is included in said control circuit, and a connection for setting said bias voltage or said power source voltage between said power amplifier and said control circuit is formed by a serial interface using digital signal.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2009-09-18 | 2010-03-20 | 2010-09-19 | $2000.00 | Window Closed / Lapsed |
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