发明名称 HIGH FREQUENCY OSCILLATOR
摘要 PURPOSE: A high frequency oscillator having sufficient phase noises in 5-6 GHz bands is provided to enable integration for especially high cost performance on an IC. CONSTITUTION: The high frequency oscillator comprises a reference oscillator(6) and a phase-locked loop circuit including a phase frequency detector(1), a charge pump(2), a ring oscillator(4) and a divider(5). The reference oscillator(6) is connected to the phase frequency detector(1) for frequency control. The ring oscillator(4) is a symmetrical delay cell oscillator containing two amplifiers with a dual output stage for providing I/Q output signal generation. The reference oscillator(6) works in the range of 1.25¯1.5 GHz and is a Colpitts type digital controlled frequency synthesizer having an external tank circuit(7) for providing a low phase noise. The dividing factor of the divider(5) is 4 for providing a tuned output range of 5 to 6 GHz.
申请公布号 KR20020001546(A) 申请公布日期 2002.01.09
申请号 KR20010034834 申请日期 2001.06.19
申请人 THOMSON LICENSING S.A. 发明人 IPEK MEHMET;RIEGER MARTIN;SCHEMMANN HEINRICH
分类号 H03K3/0231;H03L7/087;H03L7/089;H03L7/099;(IPC1-7):H03L7/099 主分类号 H03K3/0231
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