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| Number | Title | Issue Date |
| 8000672 | Rail-to-rail data receiver for high-speed communication In one embodiment, the present invention includes a receiver having two complementary input sense amplifiers to receive, amplify and latch a differential signal and to output complementary stage differential output signals to a latch coupled to receive and combine t... | 08/16/2011 |
| 7907924 | Semiconductor device interconnecting unit, semiconductor device and high-frequency module having a millimeter wave band A semiconductor device interconnecting unit configured to input/output a high-frequency signal having a millimeter wave band to/from a semiconductor device is provided. The semiconductor or device interconnecting unit includes a part of a band pass filter configured... | 03/15/2011 |
| 7848724 | Variable gain amplifier for low voltage applications An integrated communications system. Comprising a substrate having a receiver disposed on the substrate for converting a received signal to an IF signal. Coupled to a VGA for low voltage applications and coupled to the receiver for processing the IF signal. The VGA ... | 12/07/2010 |
| 7734268 | Method and apparatus for leveling an increasing or decreasing slope of an AM modulated receiving signal A method and an apparatus for leveling an increasing or decreasing slope of an AM modulated receiving signal attenuate the AM modulated receiving signal with an attenuation curve with a stepwise slope corresponding to the increasing or decreasing slope of said AM mo... | 06/08/2010 |
| 7720453 | Semiconductor device A function processing unit includes a control-signal input/output unit to which a control signal indicating that radio data for a semiconductor device is transmitted is input by a cable signal, and a reset-signal input unit to which a reset signal instructing reset ... | 05/18/2010 |
| 7477884 | Tri-state RF switch A tri-state RF MEMS switch includes: a first well formed in a first substrate; a first input signal line and a first output signal line forming a first gap therebetween in the first well; a post bar forming a boundary between the second well and third well in the se... | 01/13/2009 |
| 7426376 | Receiver having digital automatic gain control An apparatus includes a semiconductor package, a radio receiver and a processor. The radio receiver is located in the semiconductor package and includes at least one gain stage. The processor is located in the semiconductor package to execute stored instructions to ... | 09/16/2008 |
| 7332963 | Low noise amplifier A low noise amplifier is provided that includes a first circuit block capable of amplifying a first voltage signal that is input to the amplifier. The first circuit block includes a first terminal coupled to a first supply voltage by a variable resistance, and a sec... | 02/19/2008 |
| 7333155 | Quadratic video demodulation with baseband nyquist filter A television tuner is fully implemented on a monolithic integrated circuit. The television tuner includes a baseband SAWF function fully integrated in silicon. The SAWF function includes trap and bandpass filters. A video demodulation circuit includes an I, Q demodu... | 02/19/2008 |
| 7269402 | PLL circuit having a multi-band oscillator and compensating oscillation frequency A semiconductor integrated circuit device for communication is provided with a PLL circuit or the like formed therein, the PLL circuit which is capable of realizing the compensation of fluctuation due to temperature change, the inhibition of increase in the chip are... | 09/11/2007 |
| 7263340 | PLL circuit having a multi-band oscillator and compensating oscillation frequency A semiconductor integrated circuit device for communication is provided with a PLL circuit or the like formed therein, the PLL circuit which is capable of realizing the compensation of fluctuation due to temperature change, the inhibition of increase in the chip are... | 08/28/2007 |
| 7257381 | Self-tuned millimeter wave RF transceiver module A self-tuned millimeter wave transceiver module includes a microwave monolithic integrated circuit (MMIC) having at least one amplifier. A controller is operatively connected to the MMIC for sensing amplifier operating conditions and tuning the at least one amplifie... | 08/14/2007 |
| 7236758 | Integrated wireless multimedia integrated circuit An integrated circuit having a transmit chain configured to provide direct FM modulation of a voltage controlled oscillator of a frequency synthesizer by a composite signal that includes audio and video components, and a receive chain configured to provide a televis... | 06/26/2007 |
| 7230496 | Frequency synthesizer, radio communication system using the synthesizer, and control method of the synthesizer A frequency synthesizer includes a VCO (1), measures an oscillation frequency of each of multiple bands with a predetermined voltage (V1) applied to the VCO (1), and stores the measurement result to a storage circuit (11). The synthesizer... | 06/12/2007 |
| 7227423 | Monolithic clock generator and timing/frequency reference In various embodiments, the invention provides a clock generator and/or a timing and frequency reference, with multiple operating modes, such power conservation, clock, reference, and pulsed modes. The various apparatus embodiments include a resonator adapted to pro... | 06/05/2007 |
| 7161442 | Latch system comprising an action module to increase negative resistance A latch system used for providing a negative resistance. It includes a current source module used for providing at least one DC current. The latch system also includes a first cross-coupling module, which contains a first inverter, a second inverter, and an action m... | 01/09/2007 |
| 7148744 | Calibration technique for variable-gain amplifiers A variable-gain amplifier (VGA), with one or more amplifier stages, has two or more offset correction sources connected to apply offset correction signals at different locations in the VGA. In one embodiment, each amplifier stage has both an input offset correction ... | 12/12/2006 |
| 7129696 | Method for capacitance measurement in silicon A method for testing a partially fabricated wafer is provided that comprises the following steps: providing a plurality of selectable devices under test (DUT) overlying a substrate of the wafer; biasing a second structure located in proximity to the DUT to have a fi... | 10/31/2006 |
| 7103337 | PLL circuit having a multi-band oscillator and compensating oscillation frequency A semiconductor integrated circuit device for communication is provided with a PLL circuit or the like formed therein, the PLL circuit which is capable of realizing the compensation of fluctuation due to temperature change, the inhibition of increase in the chip are... | 09/05/2006 |
| 7099643 | Analog open-loop VCO calibration method An analog open-loop voltage controlled oscillator (VCO) calibration circuit and method for selecting the frequency of the VCO for a phase locked loop (PLL). A frequency divider module produces a 50% duty cycle divided local oscillation and a 50% duty cycle di... | 08/29/2006 |
| 7085587 | Signal processing semiconductor integrated circuit device and wireless communication system Disclosed herein is a direct conversion type signal processing semiconductor integrated circuit device capable of suppressing a DC voltage variation in the output of a variable gain amplifier upon the transition to a reception mode, reproducing stable receiving char... | 08/01/2006 |
| 7079860 | Semiconductor apparatus and communication apparatus A first low noise amplifier (LNA1 111) is provided with a control terminal (1115) for turning of/off the low noise amplifier (LNA1 111). Power terminals of the low noise amplifier (LNA1 111) and a second low noise amplifier (LNA2 112 | 07/18/2006 |
| 7076226 | Variable gain amplifier for low voltage applications An integrated communications system. Comprising a substrate having a receiver disposed on the substrate for converting a received signal to an IF signal. Coupled to a VGA for low voltage applications and coupled to the receiver for processing the IF signal. The VGA ... | 07/11/2006 |
| 7058124 | Reverse data transmission method and apparatus in mobile communication system A reverse data rate controlling method in a mobile communication system for transmission of packet data is provided. In an embodiment of the present invention, an RRL (Reverse Rate Limit) message includes an ignore RAB (Reverse Activity Bit) field to ensure a predet... | 06/06/2006 |
| 7053683 | Voltage controlled oscillator with automatic band selector A method and circuit for selecting the band of a multi-band voltage controlled oscillator in a phase locked loop is described. In one implementation, the circuit comprises a voltage controlled oscillator, a selection circuit for selecting a band for the voltage cont... | 05/30/2006 |
| 7042952 | Methods and apparatuses for receiving and transmitting signals Circuitry for transmitting signals through a transformer has an output transistor and circuitry which provides a controlled current to and from the output transistor's gate, so as to charge and discharge the gate's parasitic capacitance and increase and decrease the... | 05/09/2006 |
| 7015755 | Stacked modulator and automatic gain control amplifier A circuit arrangement that stacks a modulator and automatic gain control (AGC) amplifier so as to re-use the modulator output current to drive the AGC amplifier, thereby saving power consumption and avoiding an unnecessary signal transformation between the two stage... | 03/21/2006 |
| 7016664 | Mixer circuit arrangement and an image-reject mixer circuit arrangement A mixer circuit arrangement 30 comprises a complementary transconductor circuit 31 and a mixer stage 32. The complementary transconductor circuit 31 includes two paths in parallel between a positive supply voltage VDD and ground G and is ... | 03/21/2006 |
| 6999740 | Semiconductor integrated circuit and radio communication apparatus using same An amplifier circuit unit including a signal amplifying transistor is provided with a first bypass circuit unit for bypassing a part of an input signal to a ground side according to the strength of the input signal, and a second bypass circuit unit for bypassing a p... | 02/14/2006 |
| 6993303 | Radio frequency signal attenuation circuitry and gain controlling unit The present invention avoids distortion in a radio frequency device due to a received RF signal which has a voltage strength that is too high. The invention comprises a radio frequency signal attenutation circuitry, a radio frequency signal processing circuitry, int... | 01/31/2006 |
| 6919858 | RF antenna coupling structure An RF antenna coupling structure includes a first transformer, a second transformer, and a transformer balun. The first transformer includes a primary winding and a secondary winding, wherein the primary winding of the first transformer is operably coupled to a powe... | 07/19/2005 |
| 6873212 | Integrated circuit radio frequency amplifier with notch filter An integrated circuit superheterodyne radio receiver includes a notch filter coupled with an amplifier for amplifying radio frequency (RF) signals to improve image signal rejection. The notch filter includes a first oscillator circuit with a tank circuit having a re... | 03/29/2005 |
| 6754478 | CMOS low noise amplifier A CMOS low noise amplifier (LNA) is provided that is formed without inductors. The CMOS LNA can be used for a single-chip CMOS RF receiver. The CMOS LNA can include a plurality of amplification stages coupled between an input terminal and an output terminal and a ga... | 06/22/2004 |
| 6725030 | CMOS radio frequency amplifier with inverter driver A MOSFET amplifier includes a pre-amplifier stage and a power amplifier stage. The pre-amplifier is a CMOS inverter having a signal output that is DC connected to the gate of a MOS control transistor of the power amplifier stage. The CMOS inverter includes an NMOS t... | 04/20/2004 |
| 6684065 | Variable gain amplifier for low voltage applications An integrated communications system. Comprising a substrate having a receiver disposed on the substrate for converting a received signal to an IF signal. Coupled to a VGA for low voltage applications and coupled to the receiver for processing the IF signa... | 01/27/2004 |
| 6308047 | Radio-frequency integrated circuit for a radio-frequency wireless transmitter-receiver with reduced influence by radio-frequency power leakage In an RF front end portion for processing a radio-frequency signal in a portable telephone, a low pass filter allowing passing of only a signal in a frequency band lower than a radio-frequency signal component band is arranged between a circuit processing... | 10/23/2001 |
| 5517684 | Radio communication system having current control circuit In a radio communication system, a predetermined bias voltage is applied to the base of a transistor in a high-frequency amplifier circuit immediately before the transistor makes its normal operation. When a high-frequency input signal is received under a... | 05/14/1996 |
| 5471668 | Combined transmitter/receiver integrated circuit with learn mode An integrated circuit configurable as a transmitter/receiver includes learn capabilities that allows a receiver IC to memorize the identification pattern of a specific transmitter.... | 11/28/1995 |
| 4850039 | Transistor mixer A mixer for mixing first and second signals for providing a difference signal comprises a mixing transistor. The first and second signals are applied between the base and emitter electrodes of the transistor. A non-linear impedance is coupled in series wi... | 07/18/1989 |
| 4740996 | Temperature independent, low level, AM modem receiver The receiver of a radio frequency modem (10) achieves temperature and component independence in two steps. The receiver accomplishes detection in unbalanced parallel paths (Q45, Q47; Q44, Q46) such that the diode drops of transistor base-to-emitter juncti... | 04/26/1988 |
