发明名称 |
Zerox-IF receiver with tracking second local oscillator and demodulator phase locked loop oscillator |
摘要 |
A zero-intermediate frequency receiver circuit (11) for receiving a radio frequency signal detected by an antenna (14). The receiver circuit (10) comprises a second local oscillator circuit (25) and an oscillator circuit (60) of a phase locked loop demodulator (36) which are identical and track each other so as to provide a more accurate reference for processing a demodulated signal. A current reference (39) providing a current reference signal utilized by the second local oscillator circuit (25) and the oscillator circuit (60) of the phase locked loop demodulator (36).
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申请公布号 |
US5606731(A) |
申请公布日期 |
1997.02.25 |
申请号 |
US19950399805 |
申请日期 |
1995.03.07 |
申请人 |
MOTOROLA, INC. |
发明人 |
PACE, GARY L.;PETERSON, VANCE H.;CALLAWAY, JR., EDGAR H. |
分类号 |
H03D3/24;H03J7/04;H04B1/30;(IPC1-7):H04B1/30 |
主分类号 |
H03D3/24 |
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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