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Class Information
Number: 455/319
Name: Telecommunications > Receiver or analog modulated signal frequency converter > Frequency modifying or conversion > With specified local oscillator structure or coupling > With particular coupling
Description: Subject matter including significant details of circuitry whereby the output of the local oscillator means is coupled to the frequency modifying or conversion means.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7627295 |
Downconverter and upconverter |
Dec. 1, 2009 |
| 7623838 |
Sampling mixer with asynchronous clock and signal domains |
Nov. 24, 2009 |
| 7603099 |
Direct-conversion receiver system and method with quadrature balancing and DC offset removal |
Oct. 13, 2009 |
| 7580693 |
Passive reflection mixer |
Aug. 25, 2009 |
| 7541966 |
Apparatus and method for demodulating a modulated signal |
Jun. 2, 2009 |
| 7403751 |
DC offset calibration system |
Jul. 22, 2008 |
| 7376410 |
Methods and systems for down-converting a signal using a complementary transistor structure |
May. 20, 2008 |
| 7356318 |
Quadrature subharmonic mixer |
Apr. 8, 2008 |
| 7254380 |
Low flicker noise current-folded mixer |
Aug. 7, 2007 |
| 7218907 |
Method and circuit for down-converting a signal |
May. 15, 2007 |
| 7206565 |
Device for generating wide tunable frequency using frequency divider |
Apr. 17, 2007 |
| 7206566 |
Apparatus and method for frequency conversion |
Apr. 17, 2007 |
| 7194246 |
Methods and systems for down-converting a signal using a complementary transistor structure |
Mar. 20, 2007 |
| 7167698 |
Balanced sub-harmonic mixer |
Jan. 23, 2007 |
| 7164329 |
Tunable phase shifer with a control signal generator responsive to DC offset in a mixed signal |
Jan. 16, 2007 |
| 7146149 |
High isolation switch buffer for frequency hopping radios |
Dec. 5, 2006 |
| 7130607 |
Adjusting a programmable mixer |
Oct. 31, 2006 |
| 7107025 |
High gain, highly linear mixer |
Sep. 12, 2006 |
| 7085549 |
Dynamic power sharing zero intermediate frequency (ZIF) mixer and method of forming same |
Aug. 1, 2006 |
| 7031748 |
Radio signal receiving apparatus and demodulating circuit |
Apr. 18, 2006 |
| 7020451 |
Wideband multi-protocol wireless radio transceiver system |
Mar. 28, 2006 |
| 6996377 |
PLL circuit and radio communication terminal apparatus using the same |
Feb. 7, 2006 |
| 6970683 |
PLL circuit and radio communication terminal apparatus using the same |
Nov. 29, 2005 |
| 6952572 |
Image rejection mixer with switchable high or low side injection |
Oct. 4, 2005 |
| 6892061 |
Mixer circuit configuration |
May. 10, 2005 |
| 6871059 |
Passive balun FET mixer |
Mar. 22, 2005 |
| 6871056 |
Non-radiative dielectric waveguide mixer using a ring hybrid coupler |
Mar. 22, 2005 |
| 6836650 |
Methods and systems for down-converting electromagnetic signals, and applications thereof |
Dec. 28, 2004 |
| 6826393 |
Mixer circuit having component for frequency conversion |
Nov. 30, 2004 |
| 6810240 |
Analog multiplier |
Oct. 26, 2004 |
| 6782241 |
Radio device control terminal apparatus, radio system and multimedia system constitution method |
Aug. 24, 2004 |
| 6735421 |
Receiver including low noise amplifier and frequency down-converter for a wireless telecommunication system |
May. 11, 2004 |
| 6591093 |
Circuit and method for frequency translation |
Jul. 8, 2003 |
| 6545516 |
Frequency conversion |
Apr. 8, 2003 |
| 6484018 |
Method and apparatus for defining and generating local oscillator signals for down converter |
Nov. 19, 2002 |
| 6456836 |
Frequency multiplier and wireless device incorporating same |
Sep. 24, 2002 |
| 6397044 |
Transceiver |
May. 28, 2002 |
| 6275689 |
Double-balanced mixer |
Aug. 14, 2001 |
| 6272312 |
Satellite broadcasting receiving tuner which inhibits interference caused by satellite broadcast signals having one octave higher frequency band |
Aug. 7, 2001 |
| 6263199 |
Circuit and method of signal frequency conversion |
Jul. 17, 2001 |
| 6208214 |
Multifunction high frequency integrated circuit structure |
Mar. 27, 2001 |
| 6205325 |
Active radio frequency mixer circuit with feedback |
Mar. 20, 2001 |
| 6205324 |
Broadband double-balanced frequency mixer |
Mar. 20, 2001 |
| 6160425 |
Frequency converter |
Dec. 12, 2000 |
| 6138000 |
Low voltage temperature and V.sub.cc compensated RF mixer |
Oct. 24, 2000 |
| 6122497 |
RF mixer with inductive degeneration |
Sep. 19, 2000 |
| 6026286 |
RF amplifier, RF mixer and RF receiver |
Feb. 15, 2000 |
| 6011966 |
Mixer input circuit with Imbalance-balance circuit having distributed constant line |
Jan. 4, 2000 |
| 5960334 |
Amplifier and portable telephone apparatus using the same |
Sep. 28, 1999 |
| 5809411 |
Radio pager housing having openings for replacing a crystal oscillator |
Sep. 15, 1998 |
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