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Class Information
Number: 327/122
Name: Miscellaneous active electrical nonlinear devices, circuits, and systems > Signal converting, shaping, or generating > Frequency or repetition rate conversion or control > Frequency multiplication (e.g., harmonic generation, etc.) > Doubling
Description: Subject matter wherein the frequency of the output wave is exactly twice the frequency of the input wave independent of the input frequency.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7579884 |
Frequency doubler device |
Aug. 25, 2009 |
| 7495484 |
Programmable frequency multiplier |
Feb. 24, 2009 |
| 7496155 |
Duty cycle correction of a multi-gigahertz clock signal with crossover point control |
Feb. 24, 2009 |
| 7459947 |
Radio frequency doubler |
Dec. 2, 2008 |
| 7375599 |
Analog circuit and method for multiplying clock frequency |
May. 20, 2008 |
| 7295048 |
Method and apparatus for generating spread spectrum clock signals having harmonic emission suppressions |
Nov. 13, 2007 |
| 7271631 |
Clock multiplication circuit |
Sep. 18, 2007 |
| 7254208 |
Delay line based multiple frequency generator circuits for CDMA processing |
Aug. 7, 2007 |
| 7236058 |
Low frequency doubler |
Jun. 26, 2007 |
| 7227392 |
Frequency multiplier |
Jun. 5, 2007 |
| 7180342 |
Frequency doubler circuit with trimmable current control |
Feb. 20, 2007 |
| 7132863 |
Digital clock frequency doubler |
Nov. 7, 2006 |
| 7133484 |
High-frequency clock generator with low power consumption |
Nov. 7, 2006 |
| 7119588 |
Circuit for multiplying continuously varying signals |
Oct. 10, 2006 |
| 7091757 |
Frequency generator and communication system |
Aug. 15, 2006 |
| 7061285 |
Clock doubler |
Jun. 13, 2006 |
| 7053682 |
Device and method for clock generation |
May. 30, 2006 |
| 7019565 |
Methods and systems for fully differential frequency doubling |
Mar. 28, 2006 |
| 7020450 |
Active inductors using bipolar silicon transistors |
Mar. 28, 2006 |
| 7005900 |
Counter-based clock doubler circuits and methods with optional duty cycle correction and offset |
Feb. 28, 2006 |
| 6967508 |
Compact frequency doubler/multiplier circuitry |
Nov. 22, 2005 |
| 6924684 |
Counter-based phase shifter circuits and methods with optional duty cycle correction |
Aug. 2, 2005 |
| 6914460 |
Counter-based clock doubler circuits and methods |
Jul. 5, 2005 |
| 6882191 |
Rectifier type frequency doubler with harmonic cancellation |
Apr. 19, 2005 |
| 6864728 |
Frequency multiplier and amplification circuit |
Mar. 8, 2005 |
| 6815991 |
Clock frequency multiplier |
Nov. 9, 2004 |
| 6707330 |
Semiconductor device having internal circuit operating in synchronization with internal clock signal |
Mar. 16, 2004 |
| 6664824 |
Frequency doubler circuit arrangement |
Dec. 16, 2003 |
| 6597213 |
Cascadable frequency doubler having stable operation over varied manufacturing processes and environmental operating conditions |
Jul. 22, 2003 |
| 6577213 |
Method and apparatus for multiplying a frequency of an electromagnetic wave |
Jun. 10, 2003 |
| 6538520 |
Methods and apparatus for producing a reference frequency signal with use of a reference frequency quadrupler having frequency selection controls |
Mar. 25, 2003 |
| 6535037 |
Injection locked frequency multiplier |
Mar. 18, 2003 |
| 6531904 |
CIRCUIT CONFIGURATIONS HAVING A DELAY DEVICE, A MULTIPLIER, FILTER AND/OR A MASTER-SLAVE FLIP-FLOP FOR GENERATING: AN OUTPUT SIGNAL BEING ORTHOGONAL TO AN INPUT SIGNAL, AN OUTPUT SIGNAL HAVING |
Mar. 11, 2003 |
| 6480311 |
Peak-hold circuit and an infrared communication device provided with such a circuit |
Nov. 12, 2002 |
| 6480046 |
Transmitter apparatus and methods using frequency doubling modulation |
Nov. 12, 2002 |
| 6459311 |
Frequency doubler circuit having detect-control unit for improving frequency doubling performance |
Oct. 1, 2002 |
| 6456126 |
Frequency doubler with polarity control |
Sep. 24, 2002 |
| 6456143 |
Frequency multiplier circuit and semiconductor integrated circuit |
Sep. 24, 2002 |
| 6411139 |
Frequency doubling circuit |
Jun. 25, 2002 |
| 6388546 |
Method and apparatus for cascading frequency doublers |
May. 14, 2002 |
| 6369622 |
Clock doubler circuit with RC-CR phase shifter network |
Apr. 9, 2002 |
| 6369675 |
Frequency multiplier capable of taking out efficiently and stably harmonics higher than fourth order |
Apr. 9, 2002 |
| 6348821 |
Frequency doubler with 50% duty cycle output |
Feb. 19, 2002 |
| 6339346 |
Low skew signal generation circuit |
Jan. 15, 2002 |
| 6337588 |
Apparatus and method for doubling the frequency of a clock signal |
Jan. 8, 2002 |
| 6285226 |
Duty cycle correction circuit and method |
Sep. 4, 2001 |
| 6265917 |
Circuit and method for altering the frequency of a signal |
Jul. 24, 2001 |
| 6259283 |
Clock doubler circuit and method |
Jul. 10, 2001 |
| 6246271 |
Frequency multiplier capable of generating a multiple output without feedback control |
Jun. 12, 2001 |
| 6229358 |
Delayed matching signal generator and frequency multiplier using scaled delay networks |
May. 8, 2001 |
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