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| Number | Title | Issue Date |
| 7388446 | Directly modulated CMOS VCO A variable capacitor modulator for use in a voltage controlled oscillator, includes a differential varactor block, coupling capacitors for connecting nodes of the varactor block to a tank circuit, and an element connected between the respective nodes and ground to t... | 06/17/2008 |
| 7154349 | Coupled-inductor multi-band VCO A multi-band VCO employs a coupled-inductor based resonator having N≧2 ports. Each port has an inductor and at least one capacitor. The N inductors for the N ports are magnetically coupled. The inductors/ports may be selectively enabled and disabled to allow the V... | 12/26/2006 |
| 7102454 | Highly-linear signal-modulated voltage controlled oscillator A VCO system embodying the features of the present invention includes a frequency tuning circuit, a modulation circuit coupled in a parallel fashion with the frequency tuning circuit, a band tuning circuit coupled with the frequency tuning circuit in a parallel fash... | 09/05/2006 |
| 7065326 | Millimeter wave communications system with a high performance modulator circuit A high data rate communication system operating at frequencies greater than 70 MHz and at data rates of about 1.25 Gbps or greater. Preferred embodiments include modulators with a resonant LC circuit including a diode which is back-biased for “off” (i.e., no tra... | 06/20/2006 |
| 6993315 | Super-regenerative microwave detector A resonant tunneling diode or diode array oscillator (10) including a resonant diode (11) is coupled to a millimeter-wave source (14) and a quench generator (16) for periodically quenching the oscillations so that the average oscillation ... | 01/31/2006 |
| 6784753 | Method for modulating an output voltage of a RF transmitter circuit, and RF transmitter circuit The invention relates to a method for modulating an output voltage of a transmitter circuit comprising a voltage controlled oscillator, a digital/analog converter and an antenna circuit, the method comprising the method comprising sending an output signal of suffici... | 08/31/2004 |
| 6353370 | Method and apparatus for modulation of a voltage controlled oscillator A method and apparatus for modulation of a voltage-controlled oscillator (VCO). The VCO receives a tuning control voltage for adjusting a center frequency of an output periodic signal formed by the VCO. In addition, the VCO receives a modulation control v... | 03/05/2002 |
| 5870005 | Frequency modulated oscillator for transmitting short range signals A broadcast transmitter for generating low power modulated signals, especially for a wireless speaker system. A signal source such as a source of composite audio signals including left and right audio signals and a pilot signal are applied to a radio freq... | 02/09/1999 |
| 5815218 | Circuit device including RF converter, tuner and if amplifier A circuit device provided in a video signal processing apparatus. The circuit device includes a tuner for tuning a television signal, an IF amplifier for demodulating the television signal, and an RF converter having an RF oscillator for modulating video ... | 09/29/1998 |
| 5564100 | Frequency modulator having a modulation varactor coupled to output of a VCO A frequency modulator (100) is provided which includes a VCO (200) having a modulation varactor (122) coupled to its output (128). The VCO (200) includes a resonator stage (112) coupled to an amplifier stage comprising a transistor (118). Coupling of the ... | 10/08/1996 |
| 5222016 | Frequency converter According to this invention, a frequency converter comprises a frequency mixer (11) formed in a semiconductor integrated circuit (10), an impedance conversion/signal amplitude limit differential amplifier (12) formed in the semiconductor integrated circui... | 06/22/1993 |
