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Class Information
Number: 455/313
Name: Telecommunications > Receiver or analog modulated signal frequency converter > Frequency modifying or conversion
Description: Subject matter including means whereby a modulated carrier wave signal is changed to another carrier frequency, e.g., an intermediate frequency signal, the frequency of which lies between that of the modulated input signal and the frequency of the lower frequency modulating signal.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7620121 |
DC balance compensation for AC-coupled circuits |
Nov. 17, 2009 |
| 7620382 |
Frequency converter capable of preventing level of intermediate frequency signal from lowering due to rise in temperature |
Nov. 17, 2009 |
| 7616937 |
Subharmonic mixer capable of reducing noise and enhancing gain and linearlty |
Nov. 10, 2009 |
| 7613441 |
Radio wave reception device and radio wave clock |
Nov. 3, 2009 |
| 7610032 |
System and method for frequency translation with harmonic suppression using mixer stages |
Oct. 27, 2009 |
| 7606551 |
Mixer circuit with balanced frequency mixer with varactor diodes |
Oct. 20, 2009 |
| 7605838 |
Broadcast signal receiving apparatus and method of filtering noise signals |
Oct. 20, 2009 |
| 7602861 |
Wireless receiver for removing direct current offset component |
Oct. 13, 2009 |
| 7596362 |
DC offset calibration for a radio transceiver mixer |
Sep. 29, 2009 |
| 7593704 |
Receiver assembly and method for multi-gigabit wireless systems |
Sep. 22, 2009 |
| 7593692 |
Radar detection circuit for a WLAN transceiver |
Sep. 22, 2009 |
| 7593485 |
Wireless receiver for removing direct current offset component |
Sep. 22, 2009 |
| 7589597 |
Ultra wideband and fast hopping frequency synthesizer for MB-OFDM wireless application |
Sep. 15, 2009 |
| 7587187 |
Ultra wide band, differential input/output, high frequency active mixer in an integrated circuit |
Sep. 8, 2009 |
| RE40900 |
Amplifier circuit |
Sep. 1, 2009 |
| 7583949 |
Radio wave receiving device and radio wave receiving circuit |
Sep. 1, 2009 |
| 7580693 |
Passive reflection mixer |
Aug. 25, 2009 |
| 7580684 |
Programmable radio transceiver |
Aug. 25, 2009 |
| 7577416 |
Single balanced mixer |
Aug. 18, 2009 |
| 7577417 |
Mobile terminal |
Aug. 18, 2009 |
| 7573045 |
Plasmon wave propagation devices and methods |
Aug. 11, 2009 |
| 7555280 |
Apparatus for frequency direct conversion reception in mobile communication terminal and method thereof |
Jun. 30, 2009 |
| 7555281 |
RF receiving apparatus |
Jun. 30, 2009 |
| 7548742 |
Tuner for radio frequency receivers and associated method |
Jun. 16, 2009 |
| 7546108 |
Method for supporting backward compatibility of MBMS |
Jun. 9, 2009 |
| 7546109 |
Gilbert mixers with improved isolation and methods therefor |
Jun. 9, 2009 |
| 7542751 |
Down-converter and calibration method thereof |
Jun. 2, 2009 |
| 7539476 |
RF-to-baseband receiver architecture |
May. 26, 2009 |
| 7539474 |
DC offset, re-radiation, and I/Q solutions using universal frequency translation technology |
May. 26, 2009 |
| 7536164 |
Controlling the frequency of an oscillator |
May. 19, 2009 |
| 7522902 |
Adaptive DC offset compensation apparatus and method thereof |
Apr. 21, 2009 |
| 7519100 |
Method and device for transmission/reception with frequency hopping |
Apr. 14, 2009 |
| 7515896 |
Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships |
Apr. 7, 2009 |
| 7512393 |
Downconverting mixer |
Mar. 31, 2009 |
| 7505538 |
Ultra wideband communication system, method and device with low noise reception |
Mar. 17, 2009 |
| 7502605 |
Sub-millimeter wavelength camera |
Mar. 10, 2009 |
| 7499693 |
Mixer for homodyne RF receiver |
Mar. 3, 2009 |
| 7496342 |
Down-converting electromagnetic signals, including controlled discharge of capacitors |
Feb. 24, 2009 |
| 7493097 |
High dynamic range compact mixer output stage for a wireless receiver |
Feb. 17, 2009 |
| 7483686 |
Universal platform module and methods and apparatuses relating thereto enabled by universal frequency translation technology |
Jan. 27, 2009 |
| 7471939 |
Multiplier and radio communication apparatus using the same |
Dec. 30, 2008 |
| 7469136 |
RF receivers and methods therefor |
Dec. 23, 2008 |
| 7457605 |
Low noise image reject mixer and method therefor |
Nov. 25, 2008 |
| 7449974 |
On-chip balun and transceiver using the same and method for fabricating on-chip balun |
Nov. 11, 2008 |
| 7450925 |
Receiver for wireless communication systems and I/Q signal phase difference correction method therefor |
Nov. 11, 2008 |
| 7444126 |
Signal-to-noise optimized fully monolithic video receiver IF channel |
Oct. 28, 2008 |
| 7439813 |
Method and system for generating carrier frequencies for UWB application |
Oct. 21, 2008 |
| 7433667 |
Signal conditioning circuit |
Oct. 7, 2008 |
| 7428308 |
Transmitting and reproducing stereophonic audio signals |
Sep. 23, 2008 |
| 7424281 |
Image-rejection mixers having high linearity and high gain and RF circuits using the same |
Sep. 9, 2008 |
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