A PIN Diode Controlled Variable Attenuator On Rectangular Waveguide In Millimeter Wave Band

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  In this paper,characteristics of a pin-attenuator on a rectangular waveguide line,which operates in ka-wave band,are presented.In the band of 3 GHz an attenuator with one diode provides attenuation adjustment from 2dB to more than 10dB,and especially in the band of 34GHz-35.5GHz,the attenuator can apply an attenuation range between 1.2dB and 15dB,which can be controlled by the bias circuit.
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