发明名称 |
Photonic sigma delta analog-to-digital conversation employing dual heterojunction thyristors |
摘要 |
Interference caused by the propagation of a transmit signal transmitted from a transmit antenna to a receive antenna is effectively cancelled by an improved signal cancellation system. The system includes an interference cancellation signal generator that generates a time-delayed and amplitude-reduced representation of said transmit signal. A summing stage is operably coupled to the interference cancellation signal generator and the receive antenna. The summing stage subtracts the time-delayed and amplitude-reduced representation of the transmit signal from a receive signal to substantially cancel the interference. The interference cancellation signal generator preferably includes a novel programmable optical delay line that introduces a variable amount of optical delay to an optical signal derived from said transmit signal in addition to a thyristor-based sigma delta modulator that converts samples of the transmit signal to into a digital signal in the optical domain.
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申请公布号 |
US7064697(B2) |
申请公布日期 |
2006.06.20 |
申请号 |
US20030602217 |
申请日期 |
2003.06.24 |
申请人 |
THE UNIVERSITY OF CONNECTICUT |
发明人 |
TAYLOR GEOFF W.;CAI JIANHONG;UPP DANIEL C. |
分类号 |
H03M1/00;H01Q1/52;H03M3/02;H04B1/52 |
主分类号 |
H03M1/00 |
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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