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WO/2023/238767A1 |
An N-path filter (1) comprises N (N is an integer of 3 or more) signal paths (P1 to PN) that are connected in parallel with each other between an input/output terminal (110) and an input/output terminal (120). The signal path (PN) has a ...
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WO/2023/195387A1 |
An n-path filter (1) comprises N (N is an integer of 3 or more) signal paths (P1 to PN) that are connected in parallel between an input/output terminal (110) and an input/output terminal (120). The signal path (PN) includes a switch (2N)...
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WO/2023/100283A1 |
A filter circuit (1) includes: a filter unit (8), which has transistors (12) and capacitors (13) connected to a signal line (6) and forming paths of N phases and in which the transistors (12), to which clock signals of N phases are appli...
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WO/2023/026350A1 |
A switched capacitor circuit for a capacitive sensor system includes an amplifier having a first input terminal, a second input terminal, and an output coupled to the second input terminal. The first input terminal is a non-inversion inp...
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WO/2022/259114A1 |
An integrator having an offset evaluation circuit and a collected charge reduction circuitry and method for using the integrator. The integrator includes an amplifier, operable to amplify an input signal, an integration capacitor for col...
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WO/2022/140607A1 |
Analysis channelizers are provided. In one embodiment, the channelizer includes an M-path filter receiving an input signal; a circular buffer in communication with the M-path filter; and an M-point inverse fast Fourier transform (IFFT) c...
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WO/2022/140606A1 |
High-performance filter bank channelizers are provided. In one embodiment, a heterodyne signal shifts an input spectrum of the input signal by an offset between input and output centers, and operates at a high input sample rate. In anoth...
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WO/2021/247202A1 |
An integrator circuit includes: an operational amplifier; a first capacitor coupled to an input of the operational amplifier; a second capacitor coupled in parallel to the first capacitor so that a first terminal of the first capacitor i...
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WO/2021/205939A1 |
This signal processing circuit is provided with: a first sampling capacitor and a second sampling capacitor that are connected to an input signal path for an analog signal; and a signal processing unit for performing predetermined proces...
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WO/2021/172849A1 |
Various embodiments of the present invention disclose a method and apparatus, comprising: a communication processor; an RFIC connected to the communication processor and outputting at least one of a first radio frequency signal, a second...
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WO/2020/184075A1 |
This switched-capacitor amplifier comprises a sampling capacitor (Cs), a first switch (S1), a differential amplifier (2), a reference power source (3), a second switch (S2), a third switch (S3), and a control unit (4) that performs ON an...
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WO/2020/137729A1 |
Provided is a proximity sensor that can detect the distance between two coils. The proximity sensor is equipped with a reference signal generation circuit unit, a first coil, a second coil, a clock signal generation circuit unit, and a...
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WO/2020/110558A1 |
This variation suppressing circuit suppresses variations in a reference voltage supplied to a switched capacitor circuit (2, 42, 52) of a differential configuration. The switched capacitor circuit has a configuration in which an input ca...
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WO/2019/219212A1 |
An N-path filter (500) comprising an input port (502), an output port (504) and a plurality of paths (506-1, 506-2,..., 506-N), wherein each path comprises: a low pass filter circuit (508-1, 508-2,..., 508- N); a first switching circuit ...
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WO/2019/219204A1 |
Single-ended to differential signal converters which use an N-path filter to perform the conversion. Specifically, the single-ended to differential signal converters comprise an N-path filter that comprises a plurality of paths wherein e...
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WO/2019/209728A2 |
An N-path filter with one or more branches selectively coupled to a shared circuit node includes a first branch having a first feedback path and a second feedback path. The first feedback path includes a Miller amplifier having an input ...
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WO/2019/209596A1 |
A receiver may include a time-interleaved charge sampler comprising a charge sampler switch in series with a charge sampler capacitor. The receiver may also include a current buffer configured to drive the time-interleaved charge sampler.
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WO/2019/132193A1 |
The present invention relates to a technique for compensating for a pole-error of an integrator-transfer function in a switched-capacitor integrator circuit. The present invention is characterized by improving a signal-to-noise ratio of ...
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WO/2018/226335A1 |
A single receiver to process multiple signals to achieve carrier aggregation includes a main path, an auxiliary path and one or more local oscillators. The main path has an input that receives an input signal. The input signal includes n...
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WO/2018/129096A1 |
Systems and methods according to one or more embodiments are provided for a hum reduction circuit implemented to provide a ground path between an audio generating device and a powered headset. In one example, a system includes a jack con...
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WO/2017/136171A1 |
Certain aspects of the present disclosure provide N-path filters with wider passbands and steeper rejection than conventional N-path filters with only a single pole in each filter path. These N-path filters also have a flatter passband w...
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WO/2017/127210A1 |
Certain aspects of the present disclosure provide an N-path filter implemented using a generalized impedance converter (GIC) circuit. The GIC circuit is configured such that the N-path filter has a desired frequency response, which may i...
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WO/2017/106611A1 |
A system may include control circuitry for detecting a plosive event associated with a microphone transducer and in response to the plosive event, causing restoration of acoustic sense operation of the microphone transducer and a process...
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WO/2016/174302A1 |
Methods and apparatus, including computer program products, are provided for receivers. In one aspect there is provided an apparatus. In some example embodiments, there is provided an apparatus. The apparatus may include a first N- path ...
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WO/2016/167146A1 |
Provided is a sine wave multiplication device of simple configuration, broad input signal level range, and minimal fluctuation in characteristics due to temperature. A signal component that corresponds to the product of an input signal S...
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WO/2016/142587A1 |
Methods and apparatus, including computer program products, are provided for receivers. In one aspect there is provided an apparatus. The apparatus may include an in-phase sigma delta receiver coupled to a radio frequency input port prov...
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WO/2016/137928A1 |
Switched capacitor circuits and charge transfer methods comprising a sampling phase and a transfer phase. Circuits and methods are implemented via a plurality of switches, a set of at least two capacitors, at least one voltage amplifier,...
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WO/2016/085744A1 |
A first portion of a programmable switched capacitor block includes a first plurality of switched capacitors and a second portion of the programmable switched capacitor block includes a second plurality of switched capacitors. A first sw...
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WO/2016/084609A1 |
The present technology relates to a band elimination filter that allows desired frequency properties to be easily obtained. In an N-path filter unit, the capacitors forming a signal path are switched over time, by choosing one of a plura...
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WO/2016/034242A1 |
A charge sharing filter (303) includes: a rotating capacitor (CR); and a plurality of elementary filters (311, 312, 313), each elementary filter comprising: an elementary switch (φ,) coupled between a first node (Ai) of the respective e...
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WO/2016/021095A1 |
Provided is a variable RF filter that receives differential high-frequency signals at differential input terminals (501, 502) and passes high-frequency signals having frequencies around a desired frequency. In this variable RF filter, fi...
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WO/2016/017702A1 |
[Problem] To provide an integration circuit capable of integrating signal currents with high accuracy and an AD converter. [Solution] An integration circuit according to an embodiment is equipped with a shunt circuit (1), a first switch ...
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WO/2015/189152A1 |
A current mirror circuit includes a first transistor connected to a voltage source, a gate of the first transistor being connected to a drain of the first transistor, a current source connected to the drain and the gate of the first tran...
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WO/2015/184232A1 |
A first analog block includes a first plurality of switched capacitors and a second analog block includes a second plurality of switched capacitors. A switch associated with the first plurality of switched capacitors as well as a switch ...
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WO/2015/153025A1 |
An integrated DC blocking amplifier circuit (100), including: an operational amplifier (110) configured in a differential amplifier; and at least first and second two-stage switched-capacitor circuits, each two stage switched-capacitor c...
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WO/2015/135508A1 |
Described in embodiments herein are techniques for realizing filters having a variety of frequency responses, such as multiple pass-bands, high out-of-band rejection, without complicated designs. In accordance with an embodiment, a feedf...
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WO/2015/095482A1 |
A device includes, a reconfigurable baseband filter configured to receive a communication signal having a first carrier and a second carrier, the first carrier and the second carrier having non-contiguous respective frequencies, the reco...
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WO/2015/086892A1 |
Methods and apparatus, including computer program products, are provided for RF filtering. The apparatus comprises: a first bandpass filter to receive a differential signal, wherein the first bandpass filter comprises a resistive-capacit...
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WO/2015/086891A1 |
Methods and apparatuses, including computer program products, are provided for filtering. In some example embodiments, there is provided an apparatus (400) including a first differential amplifier (405A) including a first positive input ...
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WO/2015/040316A1 |
The invention relates to a terahertz image matrix sensor comprising a matrix of pixels and comprising, for each pixel, an antenna (32) for receiving a terahertz radiation modulated by a signal at a modulation frequency and a synchronous ...
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WO/2015/004863A1 |
A switched capacitor circuit (200) is provided with: a capacitor (211), which has a first terminal and a second terminal, and which is disposed such that an input voltage is applied to the first terminal; an inverting amplifier (221) hav...
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WO/2014/155079A1 |
According to the invention a controllable passive circuit element including: a first terminal and a second terminal; a passive circuit control input to which a control signal is applied; a first passive circuit component having a first i...
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WO/2014/155635A1 |
Provided are a delay circuit and an ultrasonic imaging device having highly accurate delay time, long maximum delay time, and low power consumption. The delay circuit comprises: an input line into which an analog input signal is input; a...
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WO/2014/089155A1 |
A filter provides high-pass coupling between circuits. The filter includes charge storage elements and switch elements coupling the charge storage elements. A controller is coupled to the switch elements for sequencing configurations of ...
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WO/2014/001609A1 |
There is disclosed an apparatus, a method, and a computer program product providing tunable impedance to match the front end with an antenna impedance. Some embodiments utilize transferred impedance phenomena where a base band or a low f...
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WO/2013/111565A1 |
Provided are a sampling mixer circuit and a receiver wherein the flexibility of positions at which the zero point and pole of a transfer function are set is high and wherein any desired filter characteristic can be easily formed. The sam...
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WO/2013/098182A1 |
A signal filter (100) comprises a first transferred impedance filter, TIF, (TIFA) having four differential signal paths (PA,1, PA,2, PA,3, PA,4) and a second TIF (TIFB) having four differential signal paths (PB,1, PB,2, PB,3, PB,4)- A fi...
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WO/2013/014724A1 |
This charge transfer circuit comprises: an input charge holding element that holds an input charge; an output charge holding element that holds an output charge; a charge transfer unit that is disposed between a first node of the input c...
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WO/2012/014464A1 |
A discrete time analog circuit has a high degree of freedom in the zero-point and pole setting positions of a filter, and has wide band and steep filter characteristics. The discrete time analog circuit (100) is provided with: a rotate c...
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WO/2012/008106A1 |
Provided is a direct sampling circuit in which signal mixing between systems is avoided, even when signal systems in which time sharing is integrated are used together by time sharing. History capacitors (153, 155) are connected at a pre...
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