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	Interference cancellation system employing photonic sigma delta modulation and optical true time delay
	TAYLOR, GEOFF W.; CAI, JIANHONG; UPP, DANIEL C.
	2004-07-29
著作权人	UNIVERSITY OF CONNECTICUT, THE
专利号	US20040146237A1
国家	美国
文献子类	发明申请
其他题名	Interference cancellation system employing photonic sigma delta modulation and optical true time delay
英文摘要	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.
公开日期	2004-07-29
申请日期	2003-06-24
状态	授权
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/53061]
专题	半导体激光器专利数据库
作者单位	UNIVERSITY OF CONNECTICUT, THE
推荐引用方式 GB/T 7714	TAYLOR, GEOFF W.,CAI, JIANHONG,UPP, DANIEL C.. Interference cancellation system employing photonic sigma delta modulation and optical true time delay. US20040146237A1. 2004-07-29.

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