218905 ⎘
Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated using two quadrature frequency conversion stages in cascade
IQ-modulation
#2Active 90-degree phase shifter with LC-type emitter degeneration and quadrature modulator IC using the same
#3Mixing DAC architectures for a radio frequency receiver
#4Multi-mode modulator and transmitter
#5Mixer circuit for direct conversion transceiver with improved IP2
#6Modulator/transmitter apparatus and method
#7Tuner using a direct digital frequency synthesizer, television receiver using such a tuner, and method therefor
#8Wideband quadrature generation technique requiring only narrowband components and method thereof
#9Envelope detector-based feedback for radio frequency (RF) transmitters