发明名称 |
APPARATUS FOR USE IN MEASURING PHASE DISPERSION PRODUCED BY APPARATUS OR A SYSTEM |
摘要 |
First and second waves at distinct frequencies are mixed to produce a third wave at their difference frequency. The phase difference between this third wave and a wave at the same frequency from a local oscillator is then detected to produce an output which is directly related to the phaseal relationship between the first and second waves.
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申请公布号 |
US3706931(A) |
申请公布日期 |
1972.12.19 |
申请号 |
USD3706931 |
申请日期 |
1971.04.01 |
申请人 |
BELL TELEPHONE LAB. INC. |
发明人 |
MAHADEVAN SUBRAMANIAN |
分类号 |
H04B3/46;(IPC1-7):H04B3/46 |
主分类号 |
H04B3/46 |
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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