Time division multiple access FDD radio unit for mobile communication FDD / TDD dual mode wireless unit, 2-frequency band pass filter, 2-frequency branch filter, 2-frequency synthesizer and voltage-controlled oscillator with controllable frequency band 2-terminal matrix switch to terminal

摘要

The FDD radio unit includes a first local oscillator (8) for oscillating a first frequency, a second local oscillator (12) for oscillating a second frequency, and a second local oscillator An m-times multiplier 18 for amplifying the second frequency to about m, and a converter (not shown) for transmitting a different frequency between the received signal and the output of the first local oscillator 8, A converter 11 for transmitting the sum or difference frequency between the output of the converter 6 and the output of the n-times multiplier 14, And a converter 22 for transmitting the sum frequency of the output of the modulator 19 and the output of the m-times multiplier 18.