Patent ID: 8660502

Claim:
A high frequency antenna switch module having a switch for switching paths among a plurality of switch ports, the module comprising: an I/O interface for generating a plural kinds of control signals for controlling the switch module on the basis of a system data signal and a system clock received from external devices; a decoder for generating a switch control signal for controlling the switch ports of the switch in response to a control signal to switch the switch ports in the plural kinds of control signals; a timing detector for switch-ports switching for generating a switch-ports switching timing detection signal in response to a switching timing of the control signal to switch the switch ports; a frequency control signal generator for generating a plurality of frequency control signals for changing frequency in response to the switch-ports switching timing detection signal; and a negative voltage generation circuit for generating a clock signal of frequency which varies according to the frequency control signals and for generating a negative voltage output signal on the basis of the clock signal, wherein the negative voltage generation circuit temporarily increases the frequency of the clock signal at the switch-ports switching timing in response to the frequency control signals, and wherein the switch switches the paths among the plurality of switch ports in response to the switch control signal and the negative voltage output signal.