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WO/2005/046098A1 |
A multi-mode receiver system (200a-200c) for processing signals based on a plurality of systems is disclosed. Embodiments of the invention provide for a shared architecture (212a-212c) for processing baseband signals (209, 221, 239, 241,...
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WO/2005/043745A2 |
A frequency synthesizer (130) is disclosed. The frequency synthesizer (130) comprises a fixed frequency generator (300) configured to generate a fixed frequency signal, a variable frequency generator (302), wherein the fixed frequency si...
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WO/2005/043744A1 |
A resistor (8) divides a voltage being applied to an anti-parallel diode pair (5) for mixing a DC pulse signal and a local oscillation signal LO. A ratio between ON-state output power and OFF-state output power of an RF pulse signal bein...
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WO/2005/040951A1 |
Methods and circuits for minimizing or eliminating the effect of trimming circuits in a voltage generating circuit are provided. In general, the effects of channel resistance of switches of the trimming circuit are reduced by utilizing s...
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WO/2005/038975A1 |
There are provided an NRD guide transceiver not requiring a transmission/reception selector switch, a download system capable of downloading large-capacity data such as video data in a short time with a simple structure using the NRD gui...
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WO/2005/039043A1 |
An amplifier circuit capable of improving communication quality. In the circuit, a constant envelope signal producing part (101) produces, from input signals (Si, Sq), first and second envelope signals. A phase shifter (102a) shifts the ...
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WO/2005/035436A2 |
A method of increasing a quality factor for a micromechanical resonator uses a laser beam to anneal the micromechanical resonator. In one embodiment, the micromechanical oscillator is formed by fabricating a mushroom shaped silicon oscil...
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WO/2005/036753A2 |
A communications system includes an encoder (115) that produces a plurality of redundant symbols. For a given key, an output symbol is generated from a combined set of symbols including the input symbols and the redundant symbols . The o...
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WO/2005/036762A1 |
A method for detecting validity of a received signal begins by performing an auto-correlation on the received signal to produce an auto-correlation resultant. The process continues by performing a cross-correlation on the receive signal ...
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WO/2005/034367A2 |
A receiver for ultra-wideband communications is provided. One feature of the receiver architecture is that includes only a single correlator. The receiver may be used in wireless and wire communication mediums. The single correlator may ...
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WO/2005/034502A2 |
Approximator apparatus, and an associated method, for approximating a Euclidean norm. A transformer transforms component portions of a data symbol into transformed values. And, the transformed values are provided to an estimator. The est...
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WO/2005/031994A1 |
A super-regenerative receiver uses controlled Q-quenching and may limit the resonant tank circuit amplitude by loading the tank circuit as soon as regenerative oscillation is detected. An amplitude detector is coupled to the regenerative...
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WO/2005/029693A1 |
A circuit for frequency translating a radio frequency signal comprises a plurality of mixer stages, each stage associated with a particular range of frequencies of a radio frequency signal. The circuit further comprises a switching circu...
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WO/2005/029696A1 |
A signal processing circuit is proposed, which is intended to receive a pair of input signals Sp and Sn in phase opposition on two input terminals and to provide two pairs of output currents SIp and SIn in phase opposition on four output...
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WO/2005/029709A2 |
A clock recovery system (10) for recovering an input data signal (14) clock. A rate detector (20) detects the input data signal bit rate and provides range signals (30a-c) specifying progressive ranges encompassing the bit rate. A freque...
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WO/2005/027339A1 |
The invention relates to a mixer circuit, a receiver comprising a mixer circuit, and a method of mixing an input signal with an oscillator signal. A mixer circuit 300 according to the invention comprises a first input node 301 and a seco...
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WO/2005/022246A1 |
The invention relates to an electrically controlled device, which device comprises at least one electrically and individually controllable cell (L, R) with a least two separate electrode structures (10, 50) arranged within said cell each...
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WO/2005/022819A1 |
The present invention concerns a phase Detector for detecting a phase difference between a data clock DATA-CLK and a reference clock REF-CLK using a data signal DATA. A transition of the data signal DATA is synchronous with a transition ...
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WO/2005/020482A2 |
A source signal is converted into a time-variant temperature field with transduction into mechanical motion. In one embodiment, the conversion of a source signal into the time-variant temperature field is provided by utilizing a micro-fa...
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WO/2005/020434A2 |
A micromechanical resonator (400, 1125) is formed on a substrate (120). The resonator has a partial spherical shell (110) clamped on an outside portion of the shell to the substrate. In other embodiments, a flat disc or other shape may b...
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WO/2005/018127A2 |
The invention relates to a method of filtering a useful radio communication signal. According to the invention, one such method involves the use of a digital adaptive filter. The inventive method comprises the following steps: a digital ...
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WO/2005/018087A2 |
A system (100) for and method of estimating a frequency shift parameter of an oscillator (110) are described. A received signal is down-converted (102). The first and second correlation functions represent the likelihood of one or more f...
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WO/2005/015759A1 |
An output signal is generated for transmission in a telecommunications systems. This may involve generating an in-phase radio frequency signal by mixing an in-phase baseband signal with a first radio frequency mixer signal; and generatin...
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WO/2005/013499A1 |
A tunable receiver is disclosed including a plurality of select filters to perform an initial band selection, a variable-gain low noise amplifier (LNA) whose gain is controlled to prevent its output power level to exceed a predetermined ...
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WO/2005/011103A1 |
A direct conversion receiver (200) includes a detector (230) that provides a measure of bias offset that is caused by component mismatches in the direct conversion mixer (250), and a corrective network (240) that reduces the bias offset ...
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WO/2005/011106A2 |
An envelope detector system is disclosed for detecting an envelope in a system input signal. The envelope detector system includes an input node for receiving an input voltage signal, a transconducting amplifier for receiving the input v...
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WO/2005/008928A2 |
A system for outputting a broadband signal outputs a number of input channel streams. The input channel streams first arrive at the system in a digital format. There the input channel streams are each directed to a modulator circuit. Eac...
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WO/2005/006567A2 |
A digital baseband (DBB) radio frequency (RF) receiver (105) includes a digital high pass filter compensation (HPFC) module (205) used to suppress group delay variation distortion caused by using low cost analog high pass filters (HPFO) ...
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WO/2005/004333A2 |
A gain compensation technique for a fractional-N phase lock loop includes locking a reference signal with the N divider feedback signal in a phase lock loop including a phase detector, charge pump, loop filter and voltage control oscilla...
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WO/2005/004332A2 |
A charge pump system for a fast locking phase lock loop includes a set n of charge pump units; and a control logic circuit for enabling the set of n charge pump units to produce up and down charge pulses with a nominal charge pump mismat...
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WO/2005/004315A2 |
A chopped charge pump (80) with matching up and down pulses including a first pair of current sources (84, 86), a second pair of current sources (90, 92), and a switching circuit (94) for switching on in a first phase one of each pair to...
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WO/2005/004338A2 |
The present invention has many aspects. One aspect of the invention is to perform equalization using a sliding window approach. A second aspect reuses information derived for each window for use by a subsequent window. A third aspect uti...
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WO/2005/004331A2 |
A differential charge pump PLL synthesizer with adjustable tuning voltage range including a voltage controlled oscillator responsive to a tuning voltage to provide an output frequency. A phase detector circuit is responsive to a referenc...
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WO/2005/001284A2 |
A pulse width modulated common mode feedback technique for a differential charge pump (16) includes averaging the output of a differential charge pump to determine the common mode voltage; generating from the pump up (30) and pump down p...
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WO/2005/002069A2 |
A fast lock phase lock loop (PLL) with minimal phase disturbance when switching from wide bandwidth mode to narrow bandwidth mode including a phase frequency detector (52), a charge pump (102), a loop filter (66) and a voltage controlled...
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WO/2005/002082A1 |
A digital baseband (DBB) receiver for receiving and processing a wireless communication signal. The DBB receiver includes at least one low noise amplifier (LNA), at least one demodulator, a direct current (DC) discharge circuit and an LN...
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WO/2004/114515A1 |
An amplitude controller for adjusting the amplitude of a radio-frequency signal, the amplitude controller comprising means for splitting (302A) an amplitude adjustment input signal into one or more signal pairs, each signal pair comprisi...
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WO/2004/112141A1 |
A rectangular parallelepiped protrusion part (21) having a height HB and a width WB is formed on a silicon substrate, and a gate oxide film is formed on portions of the top and side wall surfaces of the protrusion part (21). A source and...
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WO/2004/112140A1 |
A mixer circuit is configured by use of a CMOS transistor (800), which comprises a combination of a p-channel MOS transistor (840A) and an n-channel MOS transistor (840B) each including a semiconductor substrate (810A,810) having at leas...
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WO/2004/109941A1 |
A zero-IF receiver includes an adaptive filter that is enabled when intermodulation distortion is detected. The adaptive filter is configured as a notch filter that is centered at the location of the second-order intermodulation distorti...
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WO/2004/109904A1 |
The invention relates to a mixer circuit comprising an input node for receiving an input signal, a first output node 202, and a second output node 203, voltage to current conversion means and switching means operatively coupled to each o...
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WO/2004/109943A1 |
The invention relates to a device for frequency conversion, comprising exactly one multi-band mixer (3) with means for transferring a signal (2) that is applied to the signal input of said multi-band mixer (3) from said signal’s source...
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WO/2004/107561A1 |
A voltage to current converter (800) configured to vary its transconductance (Gm) and to receive a voltage input signal combined with a reference voltage signal to be converted to a current output (Ileft, Iright). The reference voltage s...
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WO/2004/107560A1 |
In order to provide a phase detector and a method of phase detection which are distinguished by greater sensitivity and simple implementability, at least one differential signal of two input signals (Ua; Ub) may be formed over at least o...
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WO/2004/105230A1 |
There are provided an FM signal demodulation method and a device thereof capable of easily modifying sensitivity as an FM signal demodulator without changing the response speed and using a differentiation calculation having no waveform d...
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WO/2004/102917A2 |
The number of measurements needed to calibrat4e an electrical device is reduced. Apparatus and methods minimize output of one or more unwanted signals by determining a calibration setting, in a minimal number of measurements, from determ...
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WO/2004/100355A1 |
A receiver for frequency down converting a radio frequency signal (10) using a multistage frequency (down) conversion. The radio frequency signal (10) having a center frequency that is comprised in one of at least two frequency bands, co...
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WO/2004/099812A2 |
A system, method, and computer program product for automatically exchanging objects (1906) in a wireless mobile environment. The invention operates by transmitting a request for objects (1906) to a source (1908), receiving at least some ...
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WO/2004/100369A2 |
A diode detector comprising a detector network adapted to detect and multiply the detected voltage coupled to a divider network that comprise diodes (Dm+1 - D2m) in equal number to the number of diodes in the detector network (D1-Dm), pr...
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WO/2004/100537A1 |
A demodulator which is arranged to demodulate a first signal with the aid of a second signal, comprises a first bandpass (30) filter arranged to recover the first signal (36) from a received signal (10) and a second bandpass filter (32) ...
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