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What is the inductance of the RF receiving antenna?
1 plays a coupling role. In RF receiving antenna, the existence of inductance can eliminate detuning impedance and minimize reflection and loss.

2, play a resonant role, in the synthesizer and oscillator circuit, to ensure the necessary frequency.

3. It acts as a choke to prevent high-frequency AC components from achieving isolation effect in the loop and suppress high-frequency components. Choke beads are also used to obtain stronger isolation effect.