Device and method for maintaining synchronization and frequency
Digital radio system capable of high-speed frequency changing at
Digitally frequency-locking a radio transceiver to the received
Direct automatic frequency control method and apparatus
Direct conversion digital domain control
Direct digital synthesizer for producing a modulated intermediat
Direct digital synthesizer with a central frequency controllable
Discrete amplitude calibration of oscillators in frequency...
Discrete amplitude calibration of oscillators in frequency...
Dual band mobile phone using the same intermediate frequency...
Dual band mobile station
Dual band transceiver
Dual band VCO
Dual conversion radio frequency transceiver
Dual mode radiotelephone terminal selectively operable for frequ
Dual synthesizer RF frequency plan optimized for...
Dual-mode AFC circuit for an SSB radio transceiver
Dynamic frequency synthesizer configuration