WO2009004818A1 - Discrete filter, sampling mixer and wireless device - Google Patents

Discrete filter, sampling mixer and wireless device Download PDF

Info

Publication number
WO2009004818A1
WO2009004818A1 PCT/JP2008/001768 JP2008001768W WO2009004818A1 WO 2009004818 A1 WO2009004818 A1 WO 2009004818A1 JP 2008001768 W JP2008001768 W JP 2008001768W WO 2009004818 A1 WO2009004818 A1 WO 2009004818A1
Authority
WO
WIPO (PCT)
Prior art keywords
wireless device
frequency
discrete filter
sampling mixer
decimation
Prior art date
Application number
PCT/JP2008/001768
Other languages
French (fr)
Japanese (ja)
Inventor
Yoshifumi Hosokawa
Noriaki Saito
Kentaro Miyano
Katsuaki Abe
Original Assignee
Panasonic Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2008167269A external-priority patent/JP4954150B2/en
Application filed by Panasonic Corporation filed Critical Panasonic Corporation
Priority to US12/667,370 priority Critical patent/US8164380B2/en
Priority to CN200880023508.6A priority patent/CN101689832B/en
Publication of WO2009004818A1 publication Critical patent/WO2009004818A1/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/12—Transference of modulation from one carrier to another, e.g. frequency-changing by means of semiconductor devices having more than two electrodes
    • H03D7/125—Transference of modulation from one carrier to another, e.g. frequency-changing by means of semiconductor devices having more than two electrodes with field effect transistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H19/00—Networks using time-varying elements, e.g. N-path filters
    • H03H19/004—Switched capacitor networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

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 in four parallel arrays operates in four phases of integration, discharge, reset and feedback different from each other at the same timing. Consequently, a control signal for driving the switched capacitor circuit is used commonly. As a result, the circuit scale of a DCU (104) is reduced and the frequency of the REF signal can be lowered to the frequency of an LO signal even in operation without decimation.
PCT/JP2008/001768 2007-07-05 2008-07-03 Discrete filter, sampling mixer and wireless device WO2009004818A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/667,370 US8164380B2 (en) 2007-07-05 2008-07-03 Discrete filter, sampling mixer and wireless device
CN200880023508.6A CN101689832B (en) 2007-07-05 2008-07-03 Discrete filter, sampling mixer and wireless device

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2007-176920 2007-07-05
JP2007176920 2007-07-05
JP2007302678 2007-11-22
JP2007-302678 2007-11-22
JP2008-167269 2008-06-26
JP2008167269A JP4954150B2 (en) 2007-07-05 2008-06-26 Discrete filter, sampling mixer, and radio apparatus

Publications (1)

Publication Number Publication Date
WO2009004818A1 true WO2009004818A1 (en) 2009-01-08

Family

ID=40225883

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/001768 WO2009004818A1 (en) 2007-07-05 2008-07-03 Discrete filter, sampling mixer and wireless device

Country Status (1)

Country Link
WO (1) WO2009004818A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012008106A1 (en) * 2010-07-15 2012-01-19 パナソニック株式会社 Direct sampling circuit
JP2015039196A (en) * 2009-02-05 2015-02-26 クゥアルコム・インコーポレイテッドＱｕａｌｃｏｍｍ Ｉｎｃｏｒｐｏｒａｔｅｄ Passive switched-capacitor filters conforming to power constraint
US20150214926A1 (en) * 2012-06-21 2015-07-30 Huawei Technologies Co., Ltd. Discrete-time filter
CN105843459A (en) * 2014-10-23 2016-08-10 瑞鼎科技股份有限公司 Touch sensing circuit of capacitive touch panel

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030050027A1 (en) * 2001-03-16 2003-03-13 Khurram Muhammad Digitally controlled analog RF filtering in subsampling communication receiver architecture
WO2007061000A1 (en) * 2005-11-22 2007-05-31 Matsushita Electric Industrial Co., Ltd. Sampling mixer and receiver

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030050027A1 (en) * 2001-03-16 2003-03-13 Khurram Muhammad Digitally controlled analog RF filtering in subsampling communication receiver architecture
WO2007061000A1 (en) * 2005-11-22 2007-05-31 Matsushita Electric Industrial Co., Ltd. Sampling mixer and receiver

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015039196A (en) * 2009-02-05 2015-02-26 クゥアルコム・インコーポレイテッドＱｕａｌｃｏｍｍ Ｉｎｃｏｒｐｏｒａｔｅｄ Passive switched-capacitor filters conforming to power constraint
JP2015039197A (en) * 2009-02-05 2015-02-26 クゥアルコム・インコーポレイテッドＱｕａｌｃｏｍｍ Ｉｎｃｏｒｐｏｒａｔｅｄ Passive switched-capacitor filters conforming to power constraint
WO2012008106A1 (en) * 2010-07-15 2012-01-19 パナソニック株式会社 Direct sampling circuit
US8836378B2 (en) 2010-07-15 2014-09-16 Panasonic Corporation Direct sampling circuit
US20150214926A1 (en) * 2012-06-21 2015-07-30 Huawei Technologies Co., Ltd. Discrete-time filter
CN105843459A (en) * 2014-10-23 2016-08-10 瑞鼎科技股份有限公司 Touch sensing circuit of capacitive touch panel
CN105843459B (en) * 2014-10-23 2019-02-05 瑞鼎科技股份有限公司 Touch Sensing Circuit of Capacitive Touch Panel

Similar Documents

Publication Publication Date Title
WO2009004818A1 (en) Discrete filter, sampling mixer and wireless device
WO2007103966A3 (en) Multiple sampling sample and hold architectures
WO2011008928A3 (en) 2-phase gain calibration and scaling scheme for switched capacitor sigma-delta modulator
AU2001292735A1 (en) Multi-sampling sigma-delta analog-to-digital converter
US10990215B2 (en) Integrating circuit and capacitance sensing circuit
US9958986B2 (en) Touch sensing apparatus
EP1978642A3 (en) Detection apparatus for a capacitive proximity sensor
EP2293444A3 (en) High voltage switch in low voltage process
AU2003257311A1 (en) Interdigitated integrated circuit capacitor
CN103117723A (en) Charge domain filter and method thereof
US8380781B2 (en) Sampling filter and radio communication apparatus
WO2011036529A3 (en) Input configuration for analog to digital converter
WO2005055500A3 (en) Calibrating capacitor mismatch in a pipe-line adc
EP1638163A4 (en) Electronic device
EP1538516A3 (en) Position indicator and position detector
TW200603536A (en) Transconductance filtering circuit
WO2008112828A3 (en) Switched capacitor notch filter circuits
WO2006093599A3 (en) Anti-gate leakage programmable capacitor
TW200723682A (en) Circuit for adjusting cutoff frequency of filter
CN102332928A (en) Frequency conversion circuit, frequency conversion method, and electronic apparatus
Kim et al. A 20 μ W, 0.05 mm 2 Duty-Cycled Resistor and Frequency-Locked-Loop-based Wheatstone Bridge Interface for Low Resistance Sensing Systems
US20120092065A1 (en) Filter circuit and communication semiconductor device using the same
US20160329881A1 (en) Amplifying circuit
Meng et al. A fully-differential input amplifier with band-pass filter for biosensors
CN106557208A (en) Realize the method that touch-screen is calibrated automatically

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200880023508.6

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08776780

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 12667370

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08776780

Country of ref document: EP

Kind code of ref document: A1