Broadband PIN diode attenuator bias network

Wave transmission lines and networks – Attenuators

Reexamination Certificate

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C327S308000, C327S325000

Reexamination Certificate

active

06919774

ABSTRACT:
Diode network configurations are disclosed in which cathode bias voltage is held substantially constant to provide an attenuator circuit in which return loss is optimized throughout a broad dynamic attenuation range. Preferred embodiments include PIN diodes arranged in a π network having two attenuation control signals provided thereto. Alternative embodiments include PIN diodes arranged in a T network having two attenuation control signals provided thereto.

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