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.
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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 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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