Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Application No. | Application Title | Issue Date |
| 20110312295 | Double balanced mixer An improved double balanced mixer is provided which in one embodiment includes a first balun for receiving a first single input and providing a first balanced output having two ports, a second balun for receiving a second single input and providing a second balanced out... | 12/22/2011 |
| 20110250861 | HIGHLY INTEGRATED, HIGH FREQUENCY, HIGH POWER OPERATION MMIC A system and method for high frequency, high power operation communication systems is provided. More particularly, a system and method for a single system-on-chip system monolithic microwave integrated circuit that provides both high-frequency performance at a low cost ... | 10/13/2011 |
| 20110230157 | EQUIVALENT RADIO FREQUENCY NOTCH FILTER, RADIO FREQUENCY CHIP, AND RECEIVER An equivalent radio frequency (RF) notch filter, an RF chip, and a receiver are provided. The equivalent RF notch filter includes: a local oscillation (LO) circuit, configured to provide a LO frequency signal; configured to be connected in parallel with the main chain, ... | 09/22/2011 |
| 20110201296 | MIXER CIRCUITS FOR SECOND ORDER INTERCEPT POINT CALIBRATION A balanced mixer circuit (300, 400, 500, 600, 700 and 800) in a baseband receiver (202) includes an oscillator circuit (212), a mixer (214 and 215), a digital-to-analog converter (258 and 259) and a digital signal ... | 08/18/2011 |
| 20110124309 | HETERODYNE RECEIVER A down-conversion module for a heterodyne receiver comprises a first mixer circuit, a second mixer circuit and an interconnection. The first mixer circuit includes first and second differential control terminals and is arranged to produce a first down-converted differen... | 05/26/2011 |
| 20110092178 | DOUBLED BALANCED MIXER WITH IMPROVED COMPONENT MATCHING An improved passive double balanced mixer with reduced capacitor voltage mismatch is described. A passive double balanced mixer includes two sets of mixer circuits, each comprised of switches. Each switch is separately divided into a first portion and a second portion o... | 04/21/2011 |
| 20110076976 | RADIO FREQUENCY RECEIVER, WIRELESS COMMUNICATION UNIT AND METHOD OF OPERATION A wireless communication unit (200) comprises a radio frequency (RF) receiver for receiving an RF signal and providing the received RF signal to an off-channel signal detector (218) and a quadrature down conversion mixer circuit comprising at least one dyn... | 03/31/2011 |
| 20110065412 | MIXER CIRCUIT, INTEGRATED CIRCUIT DEVICE AND RADIO FREQUENCY COMMUNICATION UNIT A mixer circuit comprises an input stage arranged to convert an input voltage signal received at an input of the mixer circuit into at least one current signal, and a frequency conversion stage comprising at least one switching element arranged to convert a signal compo... | 03/17/2011 |
| 20110053544 | EFFICIENT RECEIVER FREQUENCY PLAN FOR COVERING MULTIPLE FREQUENCY BANDS A communications system includes a radio frequency (RF) element (104) for transforming an input RF signal into at least one of a first conditioned RF input signal associated with a first frequency range and a second conditioned RF input signal associated with a s... | 03/03/2011 |
| 20110039511 | RECEIVER FRONT END A low-power receiver front-end includes a transconductance amplifier that produces a single-ended current signal in response to a single-ended voltage signal. An output of the transconductance amplifier is provided to an LC tuned circuit. At resonance, the LC tuned circ... | 02/17/2011 |
| 20110009084 | PASSIVE HIGH FREQUENCY IMAGE REJECT MIXER The apparatus is a complete passive implementation of an image reject mixer (IRM) that is capable of operating at very high frequency. Using a hybrid as part of the IRM circuit enables operation at very high frequencies that also employs a high intermediate frequency (I... | 01/13/2011 |
| 20100233988 | RECEIVING APPARATUS A receiving apparatus includes an analog demodulation unit, a digital demodulation/decoding unit, a delay unit, a reception state detecting unit, first/second processing units, and a mixing processing unit. The analog demodulation unit demodulates a first audio signal. ... | 09/16/2010 |
| 20100173601 | VERY LOW INTERMEDIATE FREQUENCY (VLIF) RECEIVER A very low intermediate frequency (VLIF) receiver comprising a first and second mixer circuits, characterised in that receiver comprises a means of estimating the energy in a desired signal band; a means of estimating the energy in a band of frequencies comprising the d... | 07/08/2010 |
| 20100167683 | Apparatus and Method for Local Oscillator Calibration in Mixer Circuits An apparatus and method for local oscillator calibration compensates for filter passband variation in a mixer circuit, such as a receiver circuit. The receiver includes at least a mixer circuit and a filter coupled to the output of the mixer. During operation, the mixer... | 07/01/2010 |
| 20100151811 | Direct Conversion Pre-ADC Frequency Mixer A system for single path processing identical, substantially identical, close or interfering frequencies with a single analog-to-digital converter. The system receives a plurality of input signals at various frequencies and front end circuits filter out first and second... | 06/17/2010 |
| 20100112973 | GENERATION OF A COMPOSITE MITIGATION SIGNALWITH A DESIRED SPECTRAL ENERGY DISTRUBUTION A method (1100, 1200) of generating a composite mitigation signal (216, 902, 1002) is presented. The composite mitigation signal includes an odd integer (N) of transitions (310, 312) between a first amplitude and a second amplitude of the composite ... | 05/06/2010 |
| 20100105350 | LOW-NOISE MIXER The system and method of the present invention provide a single mixer (200-400) with significantly reduced noise performance at a low cost by adding a current control circuit (109) that reduces the current in at least the switching stage (103, 30... | 04/29/2010 |
| 20100081408 | Re-Configurable Passive Mixer for Wireless Receivers A configurable passive mixer is described herein. According to one exemplary embodiment, the passive mixer comprises a clock generator, a controller, and a plurality of passive mixer cores connected in parallel. The clock generator comprises a local oscillator drive uni... | 04/01/2010 |
| 20100081409 | MINIATURIZED DUAL-BALANCED MIXER CIRCUIT BASED ON A MULTILAYER DOUBLE SPIRAL LAYOUT ARCHITECTURE A miniaturized dual-balanced mixer circuit based on a multilayer double spiral layout architecture is proposed, which is designed for use to provide a frequency mixing function for millimeter wave (MMW) signals, and which features a downsized circuit layout architecture... | 04/01/2010 |
| 20090305648 | SELF-CALIBRATING MIXER Mixer circuits (1) comprise mixers (2) for receiving input signals and oscillation signals and for outputting output signals. By providing the mixers (2) with loads (3) having adjustable load values and by introducing adjustors (4) for... | 12/10/2009 |
| 20090291662 | BALANCED MIXER WITH CALIBRATION OF LOAD IMPEDANCES A calibration device is coupled to a balanced circuit device including first and second outputs provided with first and second load impedances. The calibration device includes an adjusting circuit to adjust the first and second load impedances into a load imbalance for ... | 11/26/2009 |
| 20090221258 | Balanced Series Mixer for High-Frequency Signals A balanced series mixer including a balun transformer (10) having a HF-source port and an antenna port on one side and two diode ports on the other side, two diodes (20, 22), each of which is connected between one of the diode ports and a HF-ground (24,... | 09/03/2009 |
| 20090203347 | MIXER CIRCUITS FOR SECOND ORDER INTERCEPT POINT CALIBRATION A balanced mixer circuit (300, 400, 500, 600, 700 and 800) in a baseband receiver (202) includes an oscillator circuit (212), a mixer (214 and 215), a digital-to-analog converter (258 and 259) and a digital signal ... | 08/13/2009 |
| 20090149150 | SYSTEMS, DEVICES, AND METHODS FOR SUPPRESSING FREQUENCY SPURS IN MIXERS Systems, devices and methods are disclosed for suppressing the 2LO frequency spur, output from a mixer. In various exemplary embodiments, a DC bias circuit is electrically connected to provide DC bias to one or more non-linear elements of the mixer. The biasing voltage ... | 06/11/2009 |
| 20090081985 | METHOD AND SYSTEM FOR A DISTRIBUTED TRANSCEIVER WITH DDFS CHANNEL SELECTION Aspects of a method and system for a distributed transceiver with DDFS channel selection may include frequency-translating a first signal to generate one or more second signals utilizing a distributed mixer and an in-phase and quadrature mixing stage. The first signal m... | 03/26/2009 |
| 20090075620 | LOCAL OSCILLATOR BUFFER AND MIXER HAVING ADJUSTABLE SIZE Selectable sizes for a local oscillator (LO) buffer and mixer are disclosed. In an exemplary embodiment, LO buffer and/or mixer size may be increased when a receiver or transmitter operates in a high gain mode, while LO buffer and/or mixer size may be decreased when the... | 03/19/2009 |
| 20090061812 | Multipulse/Multitone Mixing Receiver An apparatus adapted for measuring the properties of periodic signals and a method for making such measurements is disclosed. The apparatus includes a LO signal generator, a mixer, a low pass filter and an output device. The LO signal generator generates an LO signal co... | 03/05/2009 |
| 20080305759 | Mixer Circuit The invention relates to a mixer circuit 31 comprising a down-conversion mixing component 33 arranged for down-converting an input radio frequency signal Irf+, Irf−. In order to improve such a mixer circuit, it is proposed that it comprises in addition a... | 12/11/2008 |
| 20080254759 | High linearity frequency conversion system and method A frequency converter (100) is provided, comprising: a pulse generator (150) configured to receive a balanced local oscillator signal pair and to generate a balanced rectangular pulse signal pair having the reference frequency; and a mixer (160) con... | 10/16/2008 |
| 20080248775 | DYNAMIC CURRENT STEERING MIXER A dynamic current steering mixer. The dynamic current steering mixer comprises a Gilbert cell mixer core, a pair of load devices, a dynamic current steering cell, and a transconductor cell. The Gilbert cell mixer core has first and second nodes, receives a first differe... | 10/09/2008 |
| 20080160950 | Communication Device, Mixer and Method Thereof An IQ mixer and a method thereof. The IQ mixer comprises a pair of Gilbert cells and a degeneration inductor. Each pair of Gilbert cells comprises a pair of first current generators and a pair of switching networks. The pair of first current generators converts an RF si... | 07/03/2008 |
| 20080139164 | Balanced Mixer With Calibration of Load Impedances A calibration device (CC) is coupled to a balanced circuit device (MC) comprising first and second outputs respectively provided with first (Z1) and second (Z2) load impedance means. This calibration device (CC) comprises adjusting means (ADM) arranged to ... | 06/12/2008 |
| 20080132194 | SUB-HARMONIC MIXER A sub-harmonic mixer is provided, which includes: a mixer core having first and second transistors performing switching operations in response to a local oscillator (LO) signal and a radio frequency (RF) signal; a power source applying bias maximizing nonlinearity of a ... | 06/05/2008 |
| 20080070541 | CURRENT CONVERTER, FREQUENCY MIXER, RADIOFREQUENCY TRANSMISSION SYSTEM AND METHOD FOR FREQUENCY MIXING A current converter has a first amplification device, which outputs a differential current depending on a differential control signal and derives a differential feedback signal from the differential current. The current converter also has a second amplification device, ... | 03/20/2008 |
| 20080051056 | Wireless communications system One end of a balanced line is connected to a base station. A transmitting and receiving antenna is connected to the other end of the balanced line. The balanced line not only transmits a signal sent from the base station to the transmitting and receiving antenna and at ... | 02/28/2008 |
| 20080051055 | Frequency conversion circuit A frequency conversion circuit comprises an input stage composed of one or more transistors, the input stage outputting a current corresponding to a voltage-type RF signal which is input to the gate of the transistor; a frequency conversion stage receiving an LO signal,... | 02/28/2008 |
| 20080014896 | SYSTEMS, METHODS, AND APPARATUS FOR FREQUENCY CONVERSION A method according to one embodiment includes using a quadrature set of local oscillator signals having duty cycles of substantially less than fifty percent to perform a mixing operation on a radio-frequency current signal. Other embodiments include using a quadrature s... | 01/17/2008 |
| 20080003973 | Multi-function passive frequency mixer A frequency-mixing device performing voltage multiplying and low-pass filtering operations in addition to the frequency mixing is provided. The three operations may be carried out with the same components by designing the frequency mixer appropriately. The frequency mix... | 01/03/2008 |
| 20070287403 | Radio-Receiver Front-End and A Method For Frequency Converting An Input Signal An N-phase radio receiver front-end for converting an input signal having a first frequency to output signals having a second frequency, and a method for converting an input signal in an N-phase radio receiver front-end. An input port of the N-phase radio receiver front... | 12/13/2007 |
| 20070243848 | RF transceiver with compact stacker mixer design for multiple frequency conversion A single chip radio transceiver includes circuitry that enables received wideband RF signals to be down-converted to baseband frequencies and baseband signals to be up-converted to wideband RF signals prior to transmission without requiring conversion to an intermediate... | 10/18/2007 |
