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Class Information
Number: 455/318
Name: Telecommunications > Receiver or analog modulated signal frequency converter > Frequency modifying or conversion > With specified local oscillator structure or coupling
Description: Subject matter including significant details of either (a) at least one source of unmodulated signal for frequency conversion, or (b) circuitry connecting a source of unmodulated signal to a frequency conversion device.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7610033 |
Radio frequency tuner |
Oct. 27, 2009 |
| 7603095 |
Apparatus and method of switching intervals |
Oct. 13, 2009 |
| 7577416 |
Single balanced mixer |
Aug. 18, 2009 |
| 7555281 |
RF receiving apparatus |
Jun. 30, 2009 |
| 7555280 |
Apparatus for frequency direct conversion reception in mobile communication terminal and method thereof |
Jun. 30, 2009 |
| 7536164 |
Controlling the frequency of an oscillator |
May. 19, 2009 |
| 7536165 |
Offset correction for down-conversion mixers |
May. 19, 2009 |
| 7509110 |
High-order harmonic rejection mixer using multiple LO phases |
Mar. 24, 2009 |
| 7502605 |
Sub-millimeter wavelength camera |
Mar. 10, 2009 |
| 7496342 |
Down-converting electromagnetic signals, including controlled discharge of capacitors |
Feb. 24, 2009 |
| 7493095 |
PMA RX in coarse loop for high speed sampling |
Feb. 17, 2009 |
| 7483687 |
Quadrature sub-harmonic frequency down-converter |
Jan. 27, 2009 |
| 7469136 |
RF receivers and methods therefor |
Dec. 23, 2008 |
| 7460849 |
Direct conversion with variable amplitude LO signals |
Dec. 2, 2008 |
| 7460850 |
High frequency receiving circuit provided with controller for turning on and off power supply to local oscillator |
Dec. 2, 2008 |
| 7457599 |
Frequency transceiver for controlling intermediate frequency |
Nov. 25, 2008 |
| 7421263 |
Circuit for reducing second order intermodulation |
Sep. 2, 2008 |
| 7415262 |
Wireless access point power control |
Aug. 19, 2008 |
| 7409190 |
Radio-frequency circuit module and radio communication apparatus |
Aug. 5, 2008 |
| 7409198 |
Wideband variable gain amplifier in an ultra wideband receiver |
Aug. 5, 2008 |
| 7398074 |
Integrated transceiver circuit with low interference production and sensitivity |
Jul. 8, 2008 |
| 7386292 |
Apparatus, system, and method for down-converting and up-converting electromagnetic signals |
Jun. 10, 2008 |
| 7379723 |
Local oscillator and mixer for transceiver |
May. 27, 2008 |
| 7376410 |
Methods and systems for down-converting a signal using a complementary transistor structure |
May. 20, 2008 |
| 7369835 |
Image rejection mixer providing precision image rejection |
May. 6, 2008 |
| 7366485 |
Multimode wireless transmitter and a portable wireless device using the same |
Apr. 29, 2008 |
| 7366486 |
System and method for coarse/fine PLL adjustment |
Apr. 29, 2008 |
| 7363018 |
High speed electrical interconnect using an optically distributed carrier signal |
Apr. 22, 2008 |
| 7356318 |
Quadrature subharmonic mixer |
Apr. 8, 2008 |
| 7356324 |
Mobile radio receiver device |
Apr. 8, 2008 |
| 7349680 |
Method and system for using PSK sync word for fine tuning frequency adjustment |
Mar. 25, 2008 |
| 7324796 |
Low temperature co-fired ceramic sub-harmonic mixer |
Jan. 29, 2008 |
| 7319366 |
Offset local oscillator without using frequency divider |
Jan. 15, 2008 |
| 7319849 |
Radio-frequency tuner with differential converter |
Jan. 15, 2008 |
| 7312669 |
Oscillation circuit |
Dec. 25, 2007 |
| 7302248 |
Harmonic image-reject converter |
Nov. 27, 2007 |
| 7299028 |
Low power, low noise figure, latch driver circuit |
Nov. 20, 2007 |
| 7277683 |
Regenerative divider for up and down conversion of radio frequency (RF) signals |
Oct. 2, 2007 |
| 7272170 |
Single oscillator transceiver |
Sep. 18, 2007 |
| 7266352 |
Multiple band RF transmitters and receivers having independently variable RF and IF local oscillators and independent high-side and low-side RF local oscillators |
Sep. 4, 2007 |
| 7248850 |
Passive subharmonic mixer design |
Jul. 24, 2007 |
| 7231192 |
High frequency receiver |
Jun. 12, 2007 |
| 7224951 |
PMA RX in coarse loop for high speed sampling |
May. 29, 2007 |
| 7224235 |
Phase-accurate multi-phase wide-band radio frequency local oscillator generator |
May. 29, 2007 |
| 7218179 |
Methods and apparatus for calibrating gm-Z |
May. 15, 2007 |
| 7205857 |
Oscillator with quadrature output in a cross-coupled configuration |
Apr. 17, 2007 |
| 7206565 |
Device for generating wide tunable frequency using frequency divider |
Apr. 17, 2007 |
| 7203475 |
Multiple rate local oscillation generator and applications thereof |
Apr. 10, 2007 |
| 7203457 |
Tuning system for achieving rapid signal acquisition for a digital satellite receiver |
Apr. 10, 2007 |
| 7194245 |
High-frequency signal receiving apparatus |
Mar. 20, 2007 |
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