Radio frequency switch for providing constant isolation over multiple frequency bands

A radio frequency (RF) switch comprising:

• a first signal terminal configured to receive an RF signal;
• a second signal terminal;
• a first series switch circuit coupled to the first signal terminal and the second signal terminal, and comprises a first series transistor;
• a shunt switch circuit coupled to the first series switch circuit, the shunt switch circuit comprising:
• a first sub-switch circuit;
• a first transistor coupled to the first sub-switch circuit;
• and
• a first compensation capacitor coupled in parallel to the first transistor;
• an inductor coupled to the shunt switch circuit;
• and
• a reference voltage terminal coupled to the inductor;
• wherein when the RF signal is operated in a first frequency band, the first transistor is turned on, and the shunt switch circuit and the inductor provide a first impedance;
• and
• when the RF signal is operated in a second frequency band, the first transistor is turned off, and the shunt switch circuit and the inductor provide a second impedance.