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Class Information
Number: 455/260
Name: Telecommunications > Receiver or analog modulated signal frequency converter > Local control of receiver operation > Local oscillator frequency control > Automatic > Utilizing particular local oscillator control > Reference oscillator or source > Phase lock loop or frequency synthesizer
Description: Subject matter having either a closed-loop electronic servomechanism the output of which locks onto or tracks the reference signal or a frequency source of high accuracy whose output frequency, is composed of two components.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7616705 |
Monolithic GPS RF front end integrated circuit |
Nov. 10, 2009 |
| 7613439 |
Programmable baseband filters supporting auto-calibration for a mobile digital cellular television environment |
Nov. 3, 2009 |
| 7610030 |
Wireless transmit-only apparatus and method |
Oct. 27, 2009 |
| 7606550 |
Method and system for a dual mode receiver with low intermediate frequency (IF) and zero second IF |
Oct. 20, 2009 |
| 7606545 |
Portable radio terminal and AFC control method |
Oct. 20, 2009 |
| 7606332 |
Variable signal delaying circuit, quadrature frequency converter and radio frequency tuner |
Oct. 20, 2009 |
| 7605669 |
System and method for generating local oscillator (LO) signals for a quadrature mixer |
Oct. 20, 2009 |
| 7606546 |
Variable frequency clock generator for synchronizing data rates between clock domains in radio frequency wireless communication systems |
Oct. 20, 2009 |
| 7602254 |
System and method for generating signals with a preselected frequency relationship in two steps |
Oct. 13, 2009 |
| 7603095 |
Apparatus and method of switching intervals |
Oct. 13, 2009 |
| 7599675 |
Method and apparatus for receiving radio frequency signals |
Oct. 6, 2009 |
| 7599677 |
Charge pump circuit having switches |
Oct. 6, 2009 |
| 7598815 |
Multiple frequency generator for quadrature amplitude modulated communications |
Oct. 6, 2009 |
| 7599673 |
Receiver architectures utilizing coarse analog tuning and associated methods |
Oct. 6, 2009 |
| 7595699 |
Look loop circuit and method having improved lock time |
Sep. 29, 2009 |
| 7593707 |
Method and system for compensation of DC offset in an RF receiver |
Sep. 22, 2009 |
| 7592874 |
Phase/frequency detector, phase locked loop, method for phase/frequency detection and method for generating an oscillator signal |
Sep. 22, 2009 |
| 7586378 |
Method and system for using a frequency locked loop logen in oscillator systems |
Sep. 8, 2009 |
| 7587190 |
Systems and methods for low power clock generation |
Sep. 8, 2009 |
| 7583946 |
Wireless communication system and method using clock swapping during image rejection calibration |
Sep. 1, 2009 |
| 7583156 |
Oscillator with multi-tap inductor, capacitors, and negative-Gm stages |
Sep. 1, 2009 |
| 7583152 |
Phase-locked loop with self-correcting phase-to-digital transfer function |
Sep. 1, 2009 |
| 7580691 |
System and method for reducing self interference |
Aug. 25, 2009 |
| 7576621 |
Film bulk acoustic resonator calibration |
Aug. 18, 2009 |
| 7577215 |
Angle demodulation apparatus, local oscillation apparatus, angle demodulation method, local oscillation signal generating method, recording medium and computer data signal |
Aug. 18, 2009 |
| 7577225 |
Digital phase-looked loop |
Aug. 18, 2009 |
| 7574185 |
Method and apparatus for generating a phase-locked output signal |
Aug. 11, 2009 |
| 7573338 |
Quadrature voltage controlled oscillator with automated phase control |
Aug. 11, 2009 |
| 7570933 |
Automatic volume control for amplitude modulated signals |
Aug. 4, 2009 |
| 7570934 |
Automatic gain control circuit |
Aug. 4, 2009 |
| 7570965 |
Method and system for compensating for using a transmitter to calibrate a receiver for channel equalization |
Aug. 4, 2009 |
| 7570925 |
Discrete amplitude calibration of oscillators in frequency synthesizers |
Aug. 4, 2009 |
| 7570924 |
High frequency signal receiving device |
Aug. 4, 2009 |
| 7570207 |
Positioning device, electronic instrument, and storage medium storing program |
Aug. 4, 2009 |
| 7570124 |
Low power frequency division and local oscillator generation |
Aug. 4, 2009 |
| 7567131 |
Device for ultra wide band frequency generating |
Jul. 28, 2009 |
| 7567789 |
Method and device for generating two signals in phase quadrature for a frequency transposition in a cellular mobile telephone |
Jul. 28, 2009 |
| 7567814 |
Time synchronized radio transmission system |
Jul. 28, 2009 |
| 7555275 |
Systems, methods and devices for dual closed loop modulation controller for nonlinear RF amplifier |
Jun. 30, 2009 |
| 7551909 |
CMOS transceiver with dual current path VCO |
Jun. 23, 2009 |
| 7551906 |
AM/FM radio receiver and local oscillator circuit used therein |
Jun. 23, 2009 |
| 7548740 |
Variable frequency clock generator for synchronizing data rates between clock domains in radio frequency wireless communication systems |
Jun. 16, 2009 |
| 7548742 |
Tuner for radio frequency receivers and associated method |
Jun. 16, 2009 |
| 7546102 |
Dual band frequency synthesizer |
Jun. 9, 2009 |
| 7546097 |
Calibration techniques for frequency synthesizers |
Jun. 9, 2009 |
| 7541880 |
Circuit and method for glitch correction |
Jun. 2, 2009 |
| 7542749 |
Variable frequency clock generator for synchronizing data rates between clock domains in radio frequency wireless communication systems |
Jun. 2, 2009 |
| 7542731 |
Radio frequency transceiver |
Jun. 2, 2009 |
| 7541957 |
Electronic filter device for the reception of TV signals |
Jun. 2, 2009 |
| 7539473 |
Overshoot reduction in VCO calibration for serial link phase lock loop (PLL) |
May. 26, 2009 |
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