Switching circuit at high frequency with low insertion loss

Details Switching circuit at high frequency with low insertion loss Switching circuit at high frequency with low insertion loss

1997-10-24

1999-10-19

Lam, Tuan T.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

327427, 333 81R, 333101, 333103, H01P 122

Patent

active

059695609

ABSTRACT:
In a switching circuit, low insertion loss and enough isolation can be ensured at a desired frequency at the same time. An inductor is externally connected in parallel with the path between the drain and source of each of field-effect transistors built in a switching integrated circuit, and the inductor and the OFF capacitance of the field-effect transistor are made to generate parallel resonance. At this time, by suitably adjusting the inductance, low insertion loss and enough isolation are ensured at a desired frequency at the same time.

REFERENCES:
patent: 4890077 (1989-12-01), Sun
patent: 4931753 (1990-06-01), Nelson et al.
patent: 4975604 (1990-12-01), Barta
patent: 5039873 (1991-08-01), Sasaki
patent: 5748053 (1998-05-01), Kameyama et al.

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