Invention Grant
US08750813B2 Method and system for a dynamic transmission gain control using a dedicated power amplifier driver in a radio frequency transmitter
有权
用于在射频发射机中使用专用功率放大器驱动器的动态传输增益控制的方法和系统
- Patent Title: Method and system for a dynamic transmission gain control using a dedicated power amplifier driver in a radio frequency transmitter
- Patent Title (中): 用于在射频发射机中使用专用功率放大器驱动器的动态传输增益控制的方法和系统
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Application No.: US12470378Application Date: 2009-05-21
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Publication No.: US08750813B2Publication Date: 2014-06-10
- Inventor: Meng-An Pan
- Applicant: Meng-An Pan
- Applicant Address: US CA Irvine
- Assignee: Broadcom Corporation
- Current Assignee: Broadcom Corporation
- Current Assignee Address: US CA Irvine
- Agency: McDermott Will & Emery LLP
- Main IPC: H04B1/04
- IPC: H04B1/04 ; H01Q11/12

Abstract:
A transmitter RF front-end integrated on a single substrate is enabled to determine whether associated IF amplification stage provides a required transmission gain for transmitting an output signal of an application. A dedicated power amplifier driver within the transmitter RF front-end is configured to provide additional gain, when needed based on the determination, to meet the required transmission gain for transmitting the output signal. The associated IF amplification stage comprises an upconversion mixer and a lowpass filter (LPF). The upconversion mixer may be implemented as an active mixer or a passive mixer. The upconversion mixer and the dedicated power amplifier driver are enabled to operate in 2.44 gigahertz. A maximum gain provided by the associated intermediate frequency (IF) amplification stage for transmitting the output signal is determined to decide the additional gain provided by the dedicated power amplifier driver by comparing with the required transmission gain.
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