Telecommunications – Transmitter and receiver at same station – With a common signal processing stage
Patent
1996-04-10
1999-08-10
Eisenzopf, Reinhard J.
Telecommunications
Transmitter and receiver at same station
With a common signal processing stage
455 76, 455112, H04B 140
Patent
active
059373350
ABSTRACT:
A transmission and reception method and apparatus is capable of supplying local oscillation frequencies for upconversion and downconversion, as well as carrier frequencies for modulation and demodulation by utilizing only one local oscillator. The apparatus includes a reference signal generator for generating a reference signal, and a phase locked loop for locking the output of the reference signal generator to a predetermined frequency. A signal generator generates a signal in response to the output provided from the phase locked loop, and provides the signal to phase shifters in modulation and demodulation circuits. A first frequency multiplier multiplies the output of the signal generator, a first band pass filter band pass filters the output of the first frequency multiplier, and a first amplifier amplifies the output of the first band pass filter and provides the amplified result to an upconversion mixer. A second frequency multiplier multiplies the output of the signal generator, a second band pass filter band pass filters the output of the second frequency multiplier, and a second amplifier amplifies the output of the second band pass filter and provides the amplified result to a downconversion mixer.
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Kim Sung-soo
Park Hyung-Weon
Park Jae-Sun
Park Joung-Kyou
Armstrong Darnell R.
Bushnell Esq. Robert E.
Eisenzopf Reinhard J.
Samsung Electronics Co,. Ltd.
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