Invention Grant
- Patent Title: Built-in testing signal wireless communication apparatus and testing method thereof
- Patent Title (中): 内置测试信号无线通信设备及其测试方法
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Application No.: US11696193Application Date: 2007-04-04
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Publication No.: US07937050B2Publication Date: 2011-05-03
- Inventor: Tzung-Ming Chen
- Applicant: Tzung-Ming Chen
- Applicant Address: TW Science Park, HsinChu
- Assignee: Realtek Semiconductor Corp.
- Current Assignee: Realtek Semiconductor Corp.
- Current Assignee Address: TW Science Park, HsinChu
- Agent Winston Hsu; Scott Margo
- Priority: TW95112416A 20060407
- Main IPC: H03C1/62
- IPC: H03C1/62
Abstract:
A wireless communication apparatus has: a direct current generator, for generating a direct current signal and a transmitter. The transmitter includes: an oscillating signal generator for generating an oscillating signal; a mixer for mixing one of the direct current signal and the transmitting signal with the oscillating signal according to a mode signal and generating a mixed signal; and an amplifying module for amplifying the mixed signal to generate an output signal. When the mode signal is represented that the wireless communication apparatus is under test, the direct current signal is being mixed with the oscillating signal and the mixed signal is a sinusoidal wave. When the mode signal is represented that the wireless communication apparatus is under transmitting, the transmitting signal is being mixed with the oscillating signal and the mixed signal is a modulated signal.
Public/Granted literature
- US20070238422A1 BUILT-IN TESTING SIGNAL WIRELESS COMMUNICATION APPARATUS AND TESTING METHOD THEREOF Public/Granted day:2007-10-11
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