Invention Grant
US08731492B2 System for monitoring and controlling the power of a radio frequency (RF) signal in a short-range RF transmitter
有权
用于监测和控制短距离射频发射机中射频（RF）信号功率的系统
- Patent Title: System for monitoring and controlling the power of a radio frequency (RF) signal in a short-range RF transmitter
- Patent Title (中): 用于监测和控制短距离射频发射机中射频（RF）信号功率的系统
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Application No.: US13054124Application Date: 2008-07-17
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Publication No.: US08731492B2Publication Date: 2014-05-20
- Inventor: Alain Huot , Christophe Pinatel
- Applicant: Alain Huot , Christophe Pinatel
- Applicant Address: US TX Austin
- Assignee: Freescale Semiconductor, Inc.
- Current Assignee: Freescale Semiconductor, Inc.
- Current Assignee Address: US TX Austin
- International Application: PCT/IB2008/054159 WO 20080717
- International Announcement: WO2010/007475 WO 20100121
- Main IPC: H04B1/04
- IPC: H04B1/04 ; H04B17/00
Abstract:
A system for monitoring and controlling the power of a Radio Frequency (RF) signal in a short-range RF transmitter. An RF signal-generation unit generates the RF signal. A power amplifier amplifies the RF signal. An impedance-matching network matches the output impedance of the power amplifier to input impedance of an antenna. One or more RF power monitors monitor the voltage amplitude of the RF signal at the output of at least one of the RF signal-generation unit, the power amplifier and the impedance-matching network. The one or more RF power monitors further generate at least one alarm signal, based on the voltage amplitude of the RF signal. A control unit modifies at least one operating parameter of at least one of the RF signal-generation unit and the power amplifier, based on the at least one alarm signal generated by the one or more RF power monitors.
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