Switched delay line for steerable null antenna system

Details Switched delay line for steerable null antenna system Switched delay line for steerable null antenna system

H - Electricity

03

H

333/34

H03H 7/30 (2006.01) H01Q 3/26 (2006.01) H01Q 3/38 (2006.01) H03H 11/26 (2006.01) H03K 17/74 (2006.01)

Patent

CA 1154105

Abstract of the Disclosure The invention disclosed relates to a delay unit for providing an incrementally variable delay for radis frequency signals including the arrange- ment of the delay line switches from PIN diodes so as to require a constant direct current for each delay line with the current diverted by transistor switches through the switch diodes selected for turn on by an external device while reverse biasing those switch diodes that are turned off. In the preferred embodiment the arrangement permits the variation of line length in incremental steps, the number of steps being equal to the Nth power of two where N is the number of binary delay line segments.

378410

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