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Matches 551 - 600 out of 12,550

Document Document Title
WO/2009/048695A2
A fully-functional radio receiver fabricated from a single nanotube is being disclosed. Simultaneously, a single nanotube can perform the functions of all major components of a radio: antenna, tunable band-pass filter, amplifier, and dem...  
WO/2009/046982A2
Anti jamming system comprising a tunable negative jamming signal feedback loop for feedback suppression of a received jamming signal, including an receiver receiving an jamming signal followed by a replica jamming signal generator for ge...  
WO/2009/043200A1
A method and apparatus for performing channel estimation in a receiver is provided. The method comprises steps of receiving orthogonal frequency division multiplexed (OFDM) signals including pilot subcarriers and data subcarriers; and pe...  
WO/2009/044451A1
An image rejection mixer and a communication device which can suppress unwanted frequency components of high power output frequency signals assuming a fourth-order harmonic mixer. An image rejection mixer and a communication device inclu...  
WO/2009/041102A1
An identifying means generates a regenerative signal by identifying an input signal with the timing of a clock signal and outputs the regenerative signal with an adjustable phase. An error pulse generating means generates an error pulse ...  
WO/2009/042780A2
A noise isolation passive mixing apparatus is designed to mitigate noise contribution from intermediate frequency (IF) filters and amplifiers in a radio frequency translation stage. Common-gate configuration devices are inserted between ...  
WO/2009/036399A1
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 mix...  
WO/2009/036397A1
A circuit receives a first signal (for example, a baseband signal) and mixes it with a local oscillator (LO) signal, and outputs a second signal (for example, an RFOUT signal). The circuit includes multiple identical Mixer and Frequency ...  
WO/2009/036222A2
A downconversion mixer includes a configurable gate or bulk bias voltage to allow calibration and correction of device offsets. Calibration may be performed on the configurable bias voltages to minimize IM2 distortion in the mixer. The t...  
WO/2009/034881A1
A phase comparator that solves the problem that VCOs cannot be controlled with high precision. A frequency divider part frequency divides, in stages, a VCO signal supplied to an input terminal (10) and outputs the VCO signals obtained in...  
WO/2009/030938A2
A multiplier is provided, for example, for use as a mixer in a modulator of a radio frequency transmitter. The multiplier multiplies a first alternating signal of constant amplitude by a second signal, for example, in the form of a carri...  
WO/2009/029153A1
An imaging system includes an RF source, a focal plane array and device for focusing the RF signal from the RF source. The focal plane array includes a plurality of carbon nanotube mixers for capturing RF signals and down-converting the ...  
WO/2009/027463A2
A comparator comprises a differential input stage, a current source coupled to the differential input stage for providing a tail current to one side of the differential input stage, and a differential load coupled to the differential pai...  
WO/2009/027717A1
A phase detector is provided, for example for use in a phase locked loop in a frequency synthesizer. The phasedetector comprises a phase-frequency detector (2) providing output pulses (UP, DN), whose widths represent the relative frequen...  
WO/2009/019633A2
A harmonic rejection mixer unit is provided which comprises an input (RF), at least one harmonic rejection unit (HRU) with at least two transistor units (T3a, T3b; T4a, T4b) for multiplying an input signal from the input (RF) with a mult...  
WO/2009/018871A1
In order to produce a broadband-frequency-modulated output signal s (S3), the carrier frequency (f c) of which can be adjusted in a wide frequency range, a frequency-modulated signal (S1) is produced at any desired fixed carrier frequenc...  
WO/2009/016005A1
A WCDMA receiver performs baseband suppression of the image signal component caused by IQ imbalance. An IQ imbalance image scaling factor is computed from conventional channel estimates and estimates of the IQ imbalance image channel, th...  
WO/2009/018199A2
A method and system for managing Digital to Time Conversion (DTC) is provided. The method comprises receiving a first Radio Frequency (RF) signal and a second RF signal. The second RF signal is a phase-shifted first RF signal. The method...  
WO/2009/009213A2
An apparatus, which may be configured as a receiver or transceiver, includes a plurality of super regenerative (SR) amplifiers coupled in parallel, wherein the SR amplifiers are tuned to distinct frequency bands, respectively. The appara...  
WO/2009/005681A2
A plurality of carrier signals in a wide band signal is converted (100) into a plurality of digital carrier signals. Each of the plurality of carrier signals is at a respective frequency in the wide band signal. At least one of the plura...  
WO/2009/006625A1
A device has an RF mixer (305, 314), an IF mixer module (326), a single synthesizer (322), a frequency divider (323), a single side band mixer (325) and a frequency quadrupler (325). The single synthesizer generates a signal to the IF mi...  
WO/2009/004934A1
Provided a modulation circuit comprising a switch (13) for switching a Q-signal and a QX-signal, which are frequency-offset at a frequency offset unit (23), and a controller (18) for controlling a PC (32) to switch a local oscillation fr...  
WO/2009/004818A1
A sampling filter of such circuitry as not requiring a high frequency REF signal even if the number of decimation is decreased. In the sampling filter, the rotate capacitor in each switched capacitor circuit including Cr (7a-7d) arranged...  
WO/2009/006189A2
In one embodiment, the present invention includes a mixer circuit to receive and generate a mixed signal from a radio frequency (RF) signal and a master clock signal, a switch stage coupled to an output of the mixer circuit to rotatingly...  
WO/2009/003101A2
A passive mixer include a switching architecture configured to generate differential in-phase (I) and differential quadrature-phase (Q) signals using differential components of the in-phase (I) and quadrature-phase (Q) signals operating ...  
WO/2009/002588A2
Described herein are systems and methods in which a carbon nanotube (CNT) is used as a demodulator of amplitude-modulated (AM) signals. Due to the nonlinear current-voltage (I-V) characteristics of a CNT, the CNT induces rectification of...  
WO/2008/154827A1
A mixer for mixing first and second input signals having first and second frequencies respectively. A voltage-to-current converter is coupled with an input for converting a first input signal into a current signal. A multiplier circuit i...  
WO/2008/152852A1
A current blocking circuit, and a hybrid circuit device, a transmitter, a receiver, a transmitter-receiver, and a radar device which are equipped with the current blocking circuit. A dielectric substrate (2) is formed with a conductor la...  
WO/2008/152322A2
Electronic device for frequency shifting, comprising an input for receiving an analogue input signal having a first frequency, sampling means (MECH) able to deliver analogue samples of the input signal, first processing means (MT1) able ...  
WO/2008/149258A2
A digital signal processing circuit comprises a band selector (14) for selecting at least one sub-band from a frequency spectrum of a digital sampled input signal. The band selector (14) comprises a plurality of processing branches corre...  
WO/2008/146096A1
An integrated circuit comprising processing logic (128) for operably coupling to radio frequency (RF) receiver circuitry (130) arranged to receive a wireless network signal. The receiver circuitry (130) generates in-phase and quadrature ...  
WO/2008/148056A1
A method and an apparatus according to an embodiment include a member, a first elongate member, and a second elongate member. Each of the first elongate member and the second elongate member are coupled to the member. A receiver configur...  
WO/2008/138453A2
Disclosed is a device that detects the presence of several amplitude-modulated high-frequency signals in a sum signal when carrier frequencies are closely adjacent. The sum signal is phase-demodulated by a phase demodulator (156) and is ...  
WO/2008/139390A1
The present invention relates to a mixer circuit and method of frequency transformation, wherein an input signal is switched in accordance with a first local oscillator signal and in accordance with at least one second local oscillator s...  
WO/2008/136103A1
A low-cost, small-size even harmonic mixer is provided. There are included a converter in which the conductor of a microstrip line is connected to the ground plane of a waveguide and which converts an RF signal transmitted in a waveguide...  
WO/2008/137226A2
Methods and apparatus for local oscillator generation are provided. In a method embodiment, a method of signal processing includes splitting a signal having a first frequency into at least a first portion and a second portion. The method...  
WO/2008/133624A1
This disclosure describes a chopper mixer telemetry circuit for use in a wireless receiver. The receiver may be located in an implantable medical device (IMD) or external programmer. The chopper mixer telemetry circuit may include a mixe...  
WO/2008/132062A1
The invention relates to a device for measuring distances (1) by light propagation time measurement using a correlation method, said device comprising an emitter (3) and an electro-optical mixer (5) as a receiver. A light signal is sent ...  
WO/2008/129713A1
A semiconductor chip in which a reflection circuit, a demultiplexer circuit, a matching circuit, and he like, being connected to the chip end can be made to function sufficiently. A semiconductor chip having wiring patterns (12, 14) prov...  
WO/2008/129791A1
A sampling mixer, a filter device, and a radio device all having a flat filter characteristic and a bandpass characteristic in a desired band. A sampling mixer (100) comprises a TA (Tran conductance amplifier) (1a), a TA (1b), an in-phas...  
WO/2008/129629A1
There are included a mixer circuit and a linear range compensating circuit that compensates for the linear range of the output characteristic of the mixer circuit. The mixer circuit has a load resistor connected between an output termina...  
WO/2008/128706A1
A transconductor for providing an output current that is linear in the input voltage (Vin) comprises a main output transconductor (Ms, Mc) and a model transconductor (Msr1, Msr2, Mcr1, Mcr2) that are controlled by the same signal (Vc, Vc...  
WO/2008/131003A2
A receiver including a mixer configured to generate a mixed signal at a first intermediate frequency from an input signal and a mixing signal and processing circuitry configured to detect a power level for each of a plurality of possible...  
WO/2008/123470A1
A demodulation device (200) demodulates an amplitude/phase modulated signal having a level and a phase of a change point selected from a plurality of levels and a plurality of phases in accordance with transmission data in order to repro...  
WO/2008/119680A1
The invention relates to a lock-in amplifier comprising an additional phase-sensitive detector (7), in which the measurement signal (x) is mixed in a multiplicative fashion with the reference signal (r), which is phase-shifted by 90 degr...  
WO2008073652A9
Coverage and usage-based limitations to a wireless communications network can be estimated by monitoring network performance during a periods in which the network is relatively busy and relatively non-busy. For example, differences in di...  
WO/2008/111183A1
A demodulation circuit characterized by comprising an input terminal (IN) for inputting a signal subjected to current amplitude modulation, a first transistor (101) connected with the input terminal, a capacitor (105) connected with a co...  
WO/2008/108090A1
Provided are a direct sampling circuit and a receiver using a discrete time analog process and having a filter effect of a steep attenuation characteristic in a narrow-pass band without lowering a sampling rate. In a discrete time direct...  
WO/2008/101674A1
FM receiver including an RF input circuit followed by a tunable mixer stage for frequency conversion of an RF FM signal into an IF FM signal, which is coupled to an FM input of a first narrow-band IF filter. The center frequency of the f...  
WO/2008/102411A1
A first mixer generates a first output signal by mixing a first input signal and a first clock signal. A second mixer generates a second output signal by mixing a second input signal and a second clock signal. A clock circuit selects bet...  

Matches 551 - 600 out of 12,550