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WO/2011/112290A1 |
A switched capacitor notch filter for sampling an input signal using multiple sampling capacitors during multiple non-overlapping time periods. The charge from one set of sampling capacitors is averaged and transferred to the filter outp...
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WO/2011/066744A1 |
A bias control filter and a bias control filter device of an external modulator are provided. The bias control filter comprises a clock generator, a frequency divider and a switched capacitor filter unit. The clock generator is used for ...
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WO/2011/031003A2 |
According to the present invention, a switched capacitor circuit comprises: an inverting amplifier for removing the offset by using a chopper stabilization circuit; a sampling unit which is connected between an input terminal and the inv...
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WO/2011/024481A1 |
Disclosed are a direct sampling circuit and a receiver wherein an excellent frequency characteristic is achieved by use of a relatively simple structure and simple clocks. In each of a plurality of discrete-time circuits (102-1 to 102-4)...
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WO/2010/147713A1 |
A switched capacitor notch filter (100) for sampling an input signal (111) using multiple sampling capacitors (120a, 120b) and multiple non-overlapping time periods. The charge from the sampling capacitors is averaged and transferred to ...
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WO/2010/142460A1 |
An amplifier (1) includes an analogue-to-digital converter (ADC) (7) and a switched capacitor output stage (8). The ADC (7) converts an analogue signal into a digital signal containing a sequence of symbols. The switched capacitor output...
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WO/2010/104892A2 |
The invention relates to a flow cytometer system and method to apply a gain to data measurements to improve the display of the data measurements. The method for applying a gain to data detected in a flow cytometer, involves obtaining mea...
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WO/2010/101058A1 |
Provided is a complex bandpass ΔΣAD modulator capable of suppressing influence to a signal component of an image component caused by the mismatch between the I-channel and the Q-channel, with a low power consumption. The complex bandpa...
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WO/2010/064450A1 |
Disclosed are a sampling circuit and a receiver having a high degree of freedom of the filter design and excellent characteristics for removing an interfering wave. Provided also are a sampling circuit and a receiver having a low level ...
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WO/2010/064436A1 |
Disclosed are a sampling circuit and a receiver with which filter characteristics compatible with the reception of wideband signals can be realized with a high degree of freedom in the setting of the filter characteristics. More specific...
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WO/2010/049040A1 |
The invention relates to circuits for ultrasonic transducers. The invention provides an ultrasonic transducer system comprising a parametric equalizer, the parametric equalizer having a first switching capacitor filter circuit and a seco...
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WO/2010/034782A1 |
The invention allows for the realization of a precision current reference or a fully integrated crystal-less precision oscillator by providing a circuit that precisely controls the cyclic charging operation of a switched capacitor. The v...
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WO/2010/007326A2 |
The present invention relates to a device (5) for signal processing comprising M parallel processing pathways, each pathway processing a frequency sub-band of the frequency band of the signal and comprising: an analogue filter (10i) work...
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WO/2009/140306A1 |
A switched-capacitor decimator that can attenuate undesired signal components at odd harmonics of an output sample rate is described. In one design, the switched-capacitor decimator includes at least one sampling capacitor and multiple s...
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WO/2009/090883A1 |
Provided is a sampling filter device which can modify filter characteristic without using a control signal having a complicated waveform. The sampling filter device (105) includes integration capacitors (130, 131), an integration time ad...
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WO/2009/087490A1 |
A differential amplifier circuit (300) comprising a differential amplifier (310) capacitor and a mismatch error cancellation circuitry, a first pair of capacitors (CIm, CIp), a second pair of capacitors (C2m, C2p) consisting of switching...
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WO/2009/075105A1 |
There are provided a sampling mixer, quadrature demodulator, and a wireless device capable of suppressing receiving sensitivity degradation caused by alias components or second-order distortion components. In the sampling mixer (101), a ...
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WO/2009/041047A1 |
A sampling filter device (100) includes: a first sampling switch (130); a second sampling switch (131); a first integrator (1500) which integrates charge inputted from the first sampling switch; a second integrator (1501) which integrate...
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WO/2009/042683A2 |
At least some of the arithmetic operations of a filter or other digital process can be performed time sequentially, which may allow the arithmetic elements for the filter or other digital process to be used multiple times for multiple op...
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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...
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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...
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WO/2008/114070A1 |
A transferred- impedance filter is disclosed, comprising a transferred-impedance stage comprising impedances; a switching stage configured such that said impedances are transferred to radio frequency domain; an oscillator configured to p...
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WO/2008/074922A1 |
An apparatus, having as an input an analog signal, is provided. The apparatus comprises a first circuit comprising an impedance transferring circuit configured to band pass filter the input signal, obtaining a filtered signal; the impeda...
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WO/2008/054615A1 |
According to an exemplary embodiment, a duplexer (300) includes a single-ended to differential filter (302), where the single-ended to differential filter includes a ladder stage (306) coupled to an antenna port (312) of the duplexer (30...
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WO/2008/050630A1 |
It is possible to provide a sampling filter device and a radio communication device capable of modifying filter characteristics without using a complicated waveform as a control signal and performing a filter process using a wide frequen...
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WO/2008/032635A1 |
[PROBLEMS] To provide a charge sampling filter circuit and a charge sampling method. [MEANS FOR SOLVING PROBLEMS] A charge sampling filter circuit has a first capacitor for sampling an inputted signal and outputs at least a part of charg...
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WO/2008/007328A1 |
The invention relates to an RF signal sampling apparatus for a wireless receiver, comprising a first transconductor circuit (Gmi), for converting received RF voltage signals into current signals, a first HR filter, for down-sampling and ...
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WO/2007/148693A1 |
Provided is a discrete filter capable of increasing degree of freedom of design including a DC gain. A sampling mixer (100) includes: a control signal generation unit (104) which generates a control signal including an SO signal; a Ch (6...
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WO/2007/142341A1 |
Provided is a discrete filter capable of adjusting the number of notches and the notch frequency and easily eliminating a particular frequency component. In a sampling mixer (100), a control signal generation unit (104) generates a plura...
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WO/2007/116974A1 |
Provided is a switched capacitor type filter device having a steep characteristic with a small number of taps. The filter device includes positive polarity selecting switches (1311 to 1354), negative polarity selecting switches (1411 to ...
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WO/2007/107633A1 |
A filtering method, a transceiver and a transmitter are provided. The transmitter comprises a power amplifier amplifying an RF signal and having multiple stages, and a local oscillator, the power amplifier comprising between at least two...
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WO/2007/108138A1 |
A composite band-pass filter receives a quadrature input signal and passes an intermediate frequency signal while attenuating all other signals including an undesired image signal. The composite band-pass filter is comprised of a continu...
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WO/2007/102459A1 |
A direct sampling circuit and a receiver which carry out discrete time analog processing with a high degree of design freedom and are provided with a filter property which is achievable to comply with the receipt of a broad band signal. ...
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WO/2007/072712A1 |
There is provided a sampling filter device, the filter characteristic of which can be changed without using a complicated waveform as a control signal. The sampling filter device (100) comprises a controller (140), a plurality of integra...
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WO/2007/054209A1 |
A switched-capacitor amplifier arrangement and a method to amplify a signal are presented. A forward path has at least one switched capacitor (10) controlled by a clock signal, thus providing an amplification phase (1) of the forward pat...
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WO/2006/083432A1 |
A reconfigurable circuit and a related method for its use, the circuit including multiple microelectromechanical systems (MEMS) switches connected between selected points in the circuit. The MEMS switches are controlled to select a desir...
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WO/2006/042888A1 |
The invention relates to a method of producing a switched-capacitor amplifier that is insensitive to the capacitor ratio and the offset of the amplifiers. The inventive method comprises the use of four clock phases and two operational am...
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WO/2005/114837A2 |
A switched-capacitor ripple-smoothing filter (400) includes a first pair of capacitors (Co, Ce). The filter (400) is configured such that either capacitor in the first pair may be reset and have a terminal coupled to a first input port (...
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WO/2005/104380A2 |
Disclosed are methods, circuits and systems for image reject filtering in a multi-tap direct sampling mixer (MTDSM) of an IF or RF system. Disclosed is the use of rotating capacitors among the in-phase and quadrature branches of a signal...
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WO/2005/093952A1 |
A loop filter (30) comprises: a first capacitive element (31) provided between a current signal input end and a reference voltage; a switched capacitor circuit (32) provided between the input end and the first capacitive element (31); an...
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WO/2005/074122A1 |
A quadrature mixer with an LO input is provided. The quadrature mixer receives a signal having a frequency FLO and a signal input having a frequency FSIG and has an output that comprises an output impedance that is high at frequencies of...
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WO/2005/071836A1 |
The invention relates to a low-pass circuit having a variable cutoff frequency. The low-pass circuit is characterized in that it varies the cutoff frequency by way of pulse-width modulation.
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WO/2005/046054A1 |
A semiconductor device comprising a first analog circuit (53) adapted to a first performance, and a second analog circuit (55) cooperating with the first analog circuit to realize a second performance higher than the first performance, w...
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WO/2005/031755A1 |
The invention relates to an active current mode sampling circuit comprising an operational amplifier (103) and at least one switched capacitor (C2, C2a, C2b). In order to reduce the power consumption of such a circuit, first switching el...
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WO/2005/019804A2 |
A microfluidic chip (10) formed with multiple fluid channels (12) terminating at a tapered electrospray ionization tip (14) for mass spectrometric analysis. The fluid channels (12) may be formed onto a channel plate that are in fluid com...
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WO/2004/112143A1 |
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) to form a MOS...
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WO/2004/095700A2 |
A reconfigurable baseband filter for use in a multimode communication system is disclosed. One or more filter elements (260), (270) can each be configured as a plurality of sub-elements (262, 264), (272, 274). The value of each of the fi...
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WO/2004/004120A2 |
Switched-capacitor filter for filtering the output signal of a digital-to-analog converter augmented with Direct Charge Transfer (DCT) techniques. A digital-to-analog converter augmented with DCT and correlated double sampling (CDS) tech...
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WO/2003/084085A1 |
A receiver apparatus (11) that converts a received signal directly to a baseband signal including a switched capacitor filter (19) that controls, based on a control signal applied to a switched capacitor element (27), a cutoff frequency ...
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WO/2003/056711A1 |
A noise filter circuit that is integrally molded on a semiconductor substrate and improves the precision of filtering out noise components. The noise filter circuit comprises a high−pass filter for detecting noise components included i...
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