Ultraminiature 180 degree phase shifter

Details Ultraminiature 180 degree phase shifter Ultraminiature 180 degree phase shifter

1989-10-27

1991-09-03

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307513, 328 55, 333164, H03L 700, H03K 5159, H01P 300

Patent

active

050457314

ABSTRACT:
A 180 degree ultraminiature phase shifter. Only two switching devices and very few passive circuit elements are required, thus allowing an extremely small and low loss device to be fabricated. When power is applied to switching devices, a low pass pi section low pass filter is realized which provides +90 degrees of phase shift. When power is absent from the switching devices, a T section high pass filter is realized which provides -90 degrees of phase shift.

REFERENCES:
patent: 4458219 (1984-07-01), Vorhaus
patent: 4556808 (1985-12-01), Coats
patent: 4580114 (1986-04-01), Upadhyayula
patent: 4599585 (1986-07-01), Vorhaus et al.
patent: 4605912 (1986-08-01), Naster et al.
patent: 4647789 (1987-03-01), Upadhyayula
patent: 4733203 (1988-03-01), Ayasli
patent: 4754265 (1988-07-01), Henderson et al.

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