公开(公告)号：CA2384412A1

公开(公告)日：2001-03-29

申请号：CA2384412

申请日：2000-09-22

Applicant: QUALCOMM INC

Inventor： ZHANG YANG ,  PENG YONSHENG

IPC: H03F3/24 ,  H03F1/02 ,  H04B1/04

Abstract: A method and apparatus for RF amplification of a transmit signal within a wireless phone. The amplifier chain is composed of three parts, a pre-driver (202), a bypassable driver amp (220), and a power amp (240). The configurati on of the amplifier chain is adjusted in real time to optimize power consumptio n for a given output power requirement. At low output power levels the driver amp (220) is bypassed and the power amp (240) is provided a low bias current . At medium output power levels the driver amp (220) is bypassed and the power amp (240) is biased at a moderate current. When high output power is require d the driver amp (220) is utilized and the power amp (240) is provided a high bias current. The driver amp (220) is shut down when in the bypassed state. The result of implementing this amplifier configuration is an increase in th e efficiency of the transmit amplifier. The increase in amplifier efficiency results in increased talk times for battery powered wireless phones.

公开(公告)号：HK1048023A1

公开(公告)日：2003-03-14

申请号：HK02109440

申请日：2002-12-31

Applicant: QUALCOMM INC

Inventor： ZHANG YANG ,  PENG YONSHENG

IPC: H03F3/24 ,  H03F1/02 ,  H04B1/04 ,  H04B ,  H03F

Abstract: A method and apparatus for RF amplification of a transmit signal within a wireless phone. The amplifier chain is composed of three parts, a pre-driver, a bypassable driver amp, and a power amp. The configuration of the amplifier chain is adjusted in real time to optimize power consumption for a given output power requirement. At low output power levels the driver amp is bypassed and the power amp is provided a low bias current. At medium output power levels the driver amp is bypassed and the power amp is biased at a moderate current. When high output power is required the driver amp is utilized and the power amp is provided a high bias current. The driver amp is shut down when in the bypassed state. The result of implementing this amplifier configuration is an increase in the efficiency of the transmit amplifier. The increase in amplifier efficiency results in increased talk times for battery powered wireless phones.

公开(公告)号：AU768337B2

公开(公告)日：2003-12-11

申请号：AU7610600

申请日：2000-09-22

Applicant: QUALCOMM INC

Inventor： ZHANG YANG ,  PENG YONSHENG

IPC: H03F3/24 ,  H03F1/02 ,  H04B1/04

Abstract: A method and apparatus for RF amplification of a transmit signal within a wireless phone. The amplifier chain is composed of three parts, a pre-driver, a bypassable driver amp, and a power amp. The configuration of the amplifier chain is adjusted in real time to optimize power consumption for a given output power requirement. At low output power levels the driver amp is bypassed and the power amp is provided a low bias current. At medium output power levels the driver amp is bypassed and the power amp is biased at a moderate current. When high output power is required the driver amp is utilized and the power amp is provided a high bias current. The driver amp is shut down when in the bypassed state. The result of implementing this amplifier configuration is an increase in the efficiency of the transmit amplifier. The increase in amplifier efficiency results in increased talk times for battery powered wireless phones.

公开(公告)号：AU7610600A

公开(公告)日：2001-04-24

申请号：AU7610600

申请日：2000-09-22

Applicant: QUALCOMM INC

Inventor： ZHANG YANG ,  PENG YONSHENG

IPC: H03F3/24 ,  H03F1/02 ,  H04B1/04

Abstract: A method and apparatus for RF amplification of a transmit signal within a wireless phone. The amplifier chain is composed of three parts, a pre-driver, a bypassable driver amp, and a power amp. The configuration of the amplifier chain is adjusted in real time to optimize power consumption for a given output power requirement. At low output power levels the driver amp is bypassed and the power amp is provided a low bias current. At medium output power levels the driver amp is bypassed and the power amp is biased at a moderate current. When high output power is required the driver amp is utilized and the power amp is provided a high bias current. The driver amp is shut down when in the bypassed state. The result of implementing this amplifier configuration is an increase in the efficiency of the transmit amplifier. The increase in amplifier efficiency results in increased talk times for battery powered wireless phones.