Wave transmission lines and networks – Attenuators
Patent
1980-12-02
1983-01-18
Heyman, John S.
Wave transmission lines and networks
Attenuators
307551, 330145, H03H 724
Patent
active
043694144
ABSTRACT:
A high-frequency input circuit for two inputs has a pair of first and second pi variable attenuation circuits each composed of three P-I-N diodes, some of which are shared by both of the circuits. The P-I-N diodes serve as attenuator elements in the attenuation circuits and also as switching elements for switching between the first and second attenuation circuits.
REFERENCES:
patent: 3518585 (1970-06-01), Wilcox
patent: 3813602 (1974-05-01), van Dijum et al.
patent: 4019160 (1977-04-01), Kam
patent: 4047131 (1977-09-01), Ludikhuize
patent: 4097827 (1978-06-01), Williams
Aoki Kazuharu
Igarashi Sadao
Alps Electric Co. ,Ltd.
Dunne Gerard F.
Heyman John S.
Shoup Guy W.
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