| 摘要 |
PURPOSE: An RF(Radio Frequency) transceiver is provided to remove a combiner and to insert a new type band pass filter in order to cancel the loss due to the combiner and to prevent an ACPR(Adjustment Channel Power Ratio) characteristic from being lowered due to the combiner loss. CONSTITUTION: An RF transceiver comprises a power amplifier(210), an inductive band pass filter(220), a high power detection signal generation part(230), an isolator(240), a transmit-receive changeover part(250), and an antenna(260). The power amplifier(210) amplifies an inputted signal and outputs it to the inductive band pass filter(220). The inductive band pass filter(220) creates an inductive signal and outputs it to the high power detection signal generation part(230). The high power detection signal generation part(230) converts the inductive signal into a DC signal. The isolator(240) transfers a signal, inputted from the inductive band pass filter(220), to the transmit-receive changeover part(250). The transmit-receive changeover part(250) protects a receiver from transmit power in transmitting and supplies an echo signal to the receiver in receiving. The antenna(260) sends signals, inputted from the transmit-receive changeover part(250), through the air or receives signals from the air.
|
