发明名称 |
LOW PHASE NOISE FREQUENCY MULTIPLIER |
摘要 |
A low phase noise frequency multiplier is disclosed for multiplying a sine wave obtained from a low phase noise crystal oscillator to higher frequencies than can be directly obtained from a crystal oscillator. The multiplication occurs without the ordinary increase in phase noise. The multiplier, when tripling the frequency contains a low phase noise frequency doubler. The double and triple frequency terms in the tripler are synthesized from two orthogonally related derivatives of the same wave, which are then multiplied in a double balanced mixer. The process reinforces the desired harmonics while not reinforcing the short term random phase noise, and produces a substantial improvement in the single sideband phase noise ratio over conventional frequency multipliers.
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申请公布号 |
CA2048762(C) |
申请公布日期 |
2000.10.24 |
申请号 |
CA19912048762 |
申请日期 |
1991.08.08 |
申请人 |
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发明人 |
CARFI, RALPH WALTER;CHICO, ALEXANDER;JACEK, VICTOR JOSEPH;CALVITTO, JOSEPH STEVEN |
分类号 |
H03B19/18;(IPC1-7):H03B19/00 |
主分类号 |
H03B19/18 |
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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