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Class Information
Number: 455/317
Name: Telecommunications > Receiver or analog modulated signal frequency converter > Frequency modifying or conversion > Unwanted oscillation or radiation prevention
Description: Subject matter including frequency modifying or conversion means combined with other means whereby any unwanted or parasitical oscillations originating in the receiver circuitry are eliminated or whereby any oscillations occurring in the receiver circuitry are prevented from being reradiated from the receiving antenna.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7567789 |
Method and device for generating two signals in phase quadrature for a frequency transposition in a cellular mobile telephone |
Jul. 28, 2009 |
| 7561862 |
Automatic selection of compensation value to reduce IM2 product in mixed signal output |
Jul. 14, 2009 |
| 7532870 |
Method and apparatus for DC offset removal |
May. 12, 2009 |
| 7532145 |
High resolution and wide dynamic range integrator |
May. 12, 2009 |
| 7505746 |
IC receiver to minimize tracking error |
Mar. 17, 2009 |
| 7502623 |
Apparatus and method for use in identifying presence of wireless terminals in mobile wireless communications systems |
Mar. 10, 2009 |
| 7496343 |
Programmable mixer for reducing local oscillator feedthrough and radio applications thereof |
Feb. 24, 2009 |
| 7437134 |
Tuner arrangement |
Oct. 14, 2008 |
| 7437137 |
Mixer system |
Oct. 14, 2008 |
| 7421260 |
Method and system for a second order input intercept point (IIP2) correction |
Sep. 2, 2008 |
| 7418237 |
Electric circuit and transmission method for telemetric transmission |
Aug. 26, 2008 |
| 7363019 |
Shaping the drive signal of a mixing device |
Apr. 22, 2008 |
| 7289167 |
Television tuner including distribution connectors |
Oct. 30, 2007 |
| 7268836 |
Television tuner device generating intermediate-frequency signal free from harmonic interference of reference signal |
Sep. 11, 2007 |
| 7266348 |
Tire air pressure detection system |
Sep. 4, 2007 |
| 7254380 |
Low flicker noise current-folded mixer |
Aug. 7, 2007 |
| 7224749 |
Method and apparatus for reducing re-radiation using techniques of universal frequency translation technology |
May. 29, 2007 |
| 7187917 |
Current interpolation in multi-phase local oscillator for use with harmonic rejection mixer |
Mar. 6, 2007 |
| 7164895 |
Antenna tuned circuit for a superheterodyne receiver |
Jan. 16, 2007 |
| 7164896 |
Method for driving a receiver stage and respective apparatus |
Jan. 16, 2007 |
| 7164899 |
System and method for frequency translation with harmonic suppression using mixer stages |
Jan. 16, 2007 |
| 7155196 |
Intermediate frequency tuner |
Dec. 26, 2006 |
| 7133656 |
Direct conversion receiver |
Nov. 7, 2006 |
| 7130606 |
Integrated semiconductor mixer |
Oct. 31, 2006 |
| 7129994 |
Television tuner having level of harmonics of oscillation signal suppressed low |
Oct. 31, 2006 |
| 7130577 |
Low noise converter employed in satellite broadcast reception system and receiver apparatus |
Oct. 31, 2006 |
| 7099647 |
Single chip direct conversion transceiver for reducing DC offset and method of manufacturing the same |
Aug. 29, 2006 |
| 7095997 |
Direct-conversion receiver for a communication system using a modulation with non-constant envelope |
Aug. 22, 2006 |
| 7076229 |
Circuits with improved power supply rejection |
Jul. 11, 2006 |
| 7065329 |
Half duplex radio transceiver with low IF receiver |
Jun. 20, 2006 |
| 7035615 |
Mixer circuit having improved even order noise, DC offset, and linearity characteristic |
Apr. 25, 2006 |
| 6980774 |
Radio frequency integrated circuit |
Dec. 27, 2005 |
| 6970689 |
Programmable mixer for reducing local oscillator feedthrough and radio applications thereof |
Nov. 29, 2005 |
| 6960961 |
EMI reduction of oscillating signals by way of controlled randomized modulation |
Nov. 1, 2005 |
| 6944436 |
Direct conversion transceiver capable of reducing DC offset using multichip module |
Sep. 13, 2005 |
| 6934524 |
Fine-stage automatic frequency compensation in post-detection short-range wireless applications |
Aug. 23, 2005 |
| 6925295 |
Offset cancellation system for a communication system receiver |
Aug. 2, 2005 |
| 6850749 |
Local oscillator architecture to reduce transmitter pulling effect and minimize unwanted sideband |
Feb. 1, 2005 |
| 6850750 |
Radio set and frequency converting method therefor |
Feb. 1, 2005 |
| 6834187 |
Method of devising a frequency plan for a signal analysis circuit |
Dec. 21, 2004 |
| 6816718 |
DC offset correction using dummy amplifier |
Nov. 9, 2004 |
| 6782249 |
Quadrature signal generation in an integrated direct conversion radio receiver |
Aug. 24, 2004 |
| 6766157 |
Reducing LO leakage in a direct conversion receiver quadrature stage |
Jul. 20, 2004 |
| 6731922 |
Optical image reject down converter |
May. 4, 2004 |
| 6711397 |
Structures and methods for direct conversion from radio frequency modulated signals to baseband signals |
Mar. 23, 2004 |
| 6711396 |
Method to reduce local oscillator or carrier leakage in frequency converting mixers |
Mar. 23, 2004 |
| 6697613 |
System for canceling internal interference in a receiver |
Feb. 24, 2004 |
| 6671505 |
Frequency converter |
Dec. 30, 2003 |
| 6665022 |
Input circuit of TV tuner |
Dec. 16, 2003 |
| 6639477 |
Oscillator, transmitter provided with such an oscillator, and use of such a transmitter |
Oct. 28, 2003 |
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