Low pass/high pass filter phase shifter

Details Low pass/high pass filter phase shifter Low pass/high pass filter phase shifter

1988-07-18

1990-10-16

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307304, 307520, 328 55, 333138, 333165, H01C 1082, H03K 326, H03K 513

Patent

active

049637738

ABSTRACT:
A compact low pass/high pass filter phase shifter including a semiconductor switch having a control electrode and first and second load electrodes; a first inductance connected in series with one load electrode and second inductance connected in series with the other load electrode; a third inductance connected in parallel with one load electrode to ground and a fourth inductance connected in parallel with the other load electrode to ground; a capacitance connected in series between the control electrode and ground; and means for applying a control signal to the control electrode for switching the semiconductor switch between a first state in which it operates as a low pass filter and a second state in which it operates as a high pass filter to introduce a phase shift in a propagated signal.

REFERENCES:
patent: 3179816 (1965-04-01), Hall et al.
patent: 3665320 (1972-05-01), Ohsawa et al.
patent: 3716730 (1973-02-01), Cerny, Jr.
patent: 3882431 (1975-05-01), Hopwood et al.
patent: 4158149 (1979-06-01), Otofuji
patent: 4176332 (1979-11-01), Bachert
patent: 4220874 (1980-09-01), Iwata et al.
patent: 4701714 (1987-10-01), Agoston

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