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RF Small Signal Products Part 2 Slide 12
A series configuration of SPDT switch offers a low Insertion Loss over a wide range of frequency. In transmit state D1 is “ON” forward biased, D2 is “OFF” reverse biased. Transmit insertion loss depends on the forward resistance of D1, Isolation between transmitter and receiver depends on the reverse capacitance of D2. In receive state the opposite situation is valid.
PTM Published on: 2011-11-02