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Tunable Or Variable



No:5511235
Apparatus for detecting a signaling channel during scanning including a controlled frequency converter circuit and a controlled filter bandwidth, and a method therefor
No:6625424
Autocalibration of a transceiver through nulling of a dc-voltage in a receiver and injecting of dc-signals in a transmitter
No:6980775
Automatic frequency control (afc) system and method using an adaptive threshold to improve accuracy of the direct current (dc) component calculation for a received signal
No:7139532
Combined t/r switch with lna and a method of improving the performance of a receiver
No:7483721
Communication device providing diverse audio signals to indicate receipt of a call or message
No:6034990
Digital radio transmission and reception system applying a direct modulation and demodulation method
No:6308050
Dual band mobile phone using the same intermediate frequency for both bands
No:4520474
Duplex communication transceiver with modulation cancellation
No:3931575
Filter stabilized single oscillator transceivers
No:5065408
Fractional-division synthesizer for a voice/data communications systems
No:5471652
Frequency synthesizer and multiplier circuit arrangement for a radio telephone
No:5408201
Frequency synthesizer using three subfrequency synthesizers for generating two different frequencies
No:4246539
Frequency synthesizing system for amssb transceiver
No:5893027
Fully integrated two-way radio transmitter utilizing current mode transmit buffer and method of using same
No:5926532
Integrated wireless communication system
No:7110725
Method and apparatus for multipath signal detection, identification, and monitoring for wideband code division multiple access systems
No:5790941
Method and apparatus for regenerating the symbol clock of a cellular telephone following a sleep cycle
No:5933097
Method for adjusting a threshold value of a vehicle-mounted device employed in an automatic toll-collecting system
No:7127217
On-chip calibration signal generation for tunable filters for rf communications and associated methods
No:5564076
Portable digital signal transceiver providing communication via a terrestrial network and via a satellite network
No:4761821
Radio frequency signal transmission system with carrier frequencies at opposite edges of the channel
No:5515364
Radio frequency telecommunications transceiver
No:7149191
Radio transceiver on a chip
No:7068171
Radio transceiver on a chip
No:7269144
Radio transceiver on a chip
No:6633550
Radio transceiver on a chip
No:6477148
Radio transceiver on a chip
No:7376396
Ratiometric transmit path architecture for communication systems
No:5163160
Satellite transponder able to use same frequency scheme for transmitter and receiver local oscillator
No:7242910
Self-calibrating radio
No:3935533
Single oscillator microwave transceiver
No:5734970
Single oscillator transceiver with multiple frequency converters
No:4229827
Single voltage controlled oscillator modem
No:5898906
System and method for implementing a cellular radio transmitter device
No:6766150
System and method for tuning a narrowband cavity filter used in a cdma transmitter
No:5777524
Temperature compensation circuit for a crystal oscillator and associated circuitry
No:7174185
Transmission level control method and transceiver apparatus in wireless local loop system
No:7076215
Transmitter-receiver
No:5758265
Transmitting and receiving apparatus for incorporation into an integrated circuit
No:7212789
Tunable duplexer
No:5894592
Wideband frequency synthesizer for direct conversion transceiver
No:5327582
Wideband wireless communications receiver

# 42 




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