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RF attenuator has been widely used in analog and radio circuit. Designed a wideband attenuator using a surface mount device that including four PIN diode. The attenuation can be adjusted by the control voltage. The attenuator has good matching characteristic and linearity in 300kHz~3GHz. The structure of the attenuator is simple. The attenuator can be designed and made easily. The attenuator is suitable in some fields. Key words-PIN diode; attenuator; HMSP3816

Design of RF Attenuator Based on PIN Diode