Electronic device

An electronic device, comprising:

• a shared pin, wherein the electronic device receives or transmits a signal through the shared pin;
• a bandwidth extension circuit, electrically coupled to the shared pin, and comprising:
• a first inductor, electrically connected between the shared pin and a node;
• a second inductor, electrically connected to the first inductor through the node;
• a first capacitor, electrically connected between the node and a ground;
• a second capacitor, electrically connected between the shared pin and the ground;
• and
• a third capacitor, electrically connected between the second inductor and the ground;
• and
• a high-frequency impedance matching circuit, electrically connected between the shared pin and the bandwidth extension circuit, and comprising:
• a third inductor, electrically connected between the shared pin and the first inductor;
• a fourth capacitor, electrically connected to one terminal of the third inductor;
• a fifth capacitor, electrically connected to another terminal of the third inductor;
• a first resistor, electrically connected between the fourth capacitor and the ground;
• and
• a second resistor, electrically connected between the fifth capacitor and the ground,
• wherein the first inductor and the second inductor are connected on each side of the node, and there is no coupling effect between the first inductor and the second inductor.