A radio-frequency switching circuit (200; 400), comprising: a first diode (202; 402); a second diode (204; 404); a third diode (206; 406); a fourth diode (208; 408); a first inductor, wherein a first node of the first inductor is coupled between an anode of the first diode (202; 402) and an anode of the third diode (206; 406), and a second node of the first inductor is configured to receive a first control voltage (Vcti); a second inductor, wherein a first node of the second inductor is coupled between an anode of the second diode (204; 404) and an anode of the fourth diode (208; 408), and a second node of the second inductor is configured to receive a second control voltage; a third inductor, wherein a first node of the third inductor is coupled with a cathode of the third diode (206; 406), and a second node of the third inductor is configured to receive a second reference voltage (Vref2); a fourth inductor, wherein a first node of the fourth inductor is coupled with a cathode of the fourth diode (208; 408), and a second node of the fourth inductor is configured to receive a third reference voltage (Vref3); a fifth inductor, wherein a first node of the fifth inductor is coupled with a common node (Nc), an cathode of the first diode (202; 402), and an cathode of the second diode (204; 404), and a second node of the fifth inductor is configured to receive a first reference voltage (Vref1); a first capacitor, coupled between the first node of the third inductor and a first signal node; and a second capacitor, coupled between the first node of the fourth inductor and a second signal node; wherein when the first control voltage has a disabled voltage level (Vdis) lower than the first reference voltage (Vref1), the second reference voltage (Vref2), and the third voltage level (Vref3), the first diode (202; 402) and the third diode (206; 406) are switched off to prevent an RF signal from being transmitted between the common node (Nc) and the first signal node, when the second control voltage has the disabled voltage level (Vdis), the second diode (204; 404) and the fourth diode (208; 408) are switched off to prevent the RF signal from being transmitted between the common node (Nc) and the second signal node. a first diode (202; 402); a second diode (204; 404); a third diode (206; 406); a fourth diode (208; 408); a first inductor, wherein a first node of the first inductor is coupled between an anode of the first diode (202; 402) and an anode of the third diode (206; 406), and a second node of the first inductor is configured to receive a first control voltage (Vcti); a second inductor, wherein a first node of the second inductor is coupled between an anode of the second diode (204; 404) and an anode of the fourth diode (208; 408), and a second node of the second inductor is configured to receive a second control voltage; a third inductor, wherein a first node of the third inductor is coupled with a cathode of the third diode (206; 406), and a second node of the third inductor is configured to receive a second reference voltage (Vref2); a fourth inductor, wherein a first node of the fourth inductor is coupled with a cathode of the fourth diode (208; 408), and a second node of the fourth inductor is configured to receive a third reference voltage (Vref3); a fifth inductor, wherein a first node of the fifth inductor is coupled with a common node (Nc), an cathode of the first diode (202; 402), and an cathode of the second diode (204; 404), and a second node of the fifth inductor is configured to receive a first reference voltage (Vref1); a first capacitor, coupled between the first node of the third inductor and a first signal node; and a second capacitor, coupled between the first node of the fourth inductor and a second signal node; wherein when the first control voltage has a disabled voltage level (Vdis) lower than the first reference voltage (Vref1), the second reference voltage (Vref2), and the third voltage level (Vref3), the first diode (202; 402) and the third diode (206; 406) are switched off to prevent an RF signal from being transmitted between the common node (Nc) and the first signal node, when the second control voltage has the disabled voltage level (Vdis), the second diode (204; 404) and the fourth diode (208; 408) are switched off to prevent the RF signal from being transmitted between the common node (Nc) and the second signal node.