Microwave digital phase-shifter apparatus and method for constru

Details Microwave digital phase-shifter apparatus and method for constru Microwave digital phase-shifter apparatus and method for constru

1985-03-26

1987-03-10

Heyman, John S.

Electrical pulse counters, pulse dividers, or shift registers: c

Systems

Having phase shift

328155, 328 55, H03K 5159

Patent

active

046495533

ABSTRACT:
An electronic phase shifter utilizes a serrodynable digital phase shifter which is driven by the output of a multi-bit counter. The counter in turn has its clock input driven by a pulse train which produces the desired frequency translation for noise and deception jamming. Alternatively, the counter has jam inputs for electronic antenna steering and electronic phase shift applications. In order to compensate for step phase error which causes undesirable spurious sidebands, the cells of the phase shifter are pretested for individual phase errors and an interface memory is provided which by use of a corrected counter code minimizes the errors.

REFERENCES:
patent: 2910586 (1959-10-01), Kohler
patent: 2961535 (1960-11-01), Lanning
patent: 3502976 (1970-03-01), Chamberlin, Jr. et al.
patent: 3636477 (1972-01-01), Selz
patent: 3699584 (1972-10-01), Hrivnak et al.
patent: 3742360 (1973-06-01), Ragsdale
patent: 4014238 (1977-03-01), Southard
patent: 4101821 (1978-07-01), Kirby
patent: 4443765 (1984-04-01), Findeisen et al.

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