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

1980-08-25

1982-08-24

Heyman, John S.

Electrical transmission or interconnection systems

With nonswitching means responsive to external nonelectrical...

Temperature responsive

328 56, 333139, 307256, 307242, H03K 514, H03K 1766

Patent

active

043463150

ABSTRACT:
The delay line has a number of sections in tandem. Each section comprises o line segments in parallel, one of which is relatively short and the other of a length to provide a given differential delay for the section. Each segment has a PIN diode at each end, poled in one direction for the short segment and in the other direction for the other. The bias arrangement for the PIN diodes includes four transistor switches in a bridge, with a selected pair in opposite legs turned on to cause a polarity which permits it to flow through only that segment in which the PIN diodes are forward biased. The given differential delay for the several sections has a binary relation.

REFERENCES:
patent: 3295138 (1966-12-01), Nelson
patent: 3778733 (1973-12-01), Rizzi
patent: 3982214 (1976-09-01), Burns
patent: 4054804 (1977-10-01), Tanaka

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