DE69818327D1 - Direktmischempfänger zur Unterdrückung von Offset-Gleichspannungen - Google Patents

Direktmischempfänger zur Unterdrückung von Offset-Gleichspannungen

Info

Publication number
DE69818327D1
DE69818327D1 DE69818327T DE69818327T DE69818327D1 DE 69818327 D1 DE69818327 D1 DE 69818327D1 DE 69818327 T DE69818327 T DE 69818327T DE 69818327 T DE69818327 T DE 69818327T DE 69818327 D1 DE69818327 D1 DE 69818327D1
Authority
DE
Germany
Prior art keywords
voltages
direct mix
suppressing offset
receiver
mix receiver
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
DE69818327T
Other languages
English (en)
Other versions
DE69818327T2 (de
Inventor
Masataka Mitama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
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
Application filed by NEC Corp filed Critical NEC Corp
Application granted granted Critical
Publication of DE69818327D1 publication Critical patent/DE69818327D1/de
Publication of DE69818327T2 publication Critical patent/DE69818327T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
    • H04L25/061—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of dc offset
    • H04L25/062—Setting decision thresholds using feedforward techniques only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals
    • H03D3/008—Compensating DC offsets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
    • H04L25/061—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of dc offset
    • H04L25/063—Setting decision thresholds using feedback techniques only
    • H04L25/064—Subtraction of the threshold from the signal, which is then compared to a supplementary fixed threshold
DE69818327T 1997-03-05 1998-03-03 Direktmischempfänger zur Unterdrückung von Offset-Gleichspannungen Expired - Fee Related DE69818327T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4952297 1997-03-05
JP4952297 1997-03-05

Publications (2)

Publication Number Publication Date
DE69818327D1 true DE69818327D1 (de) 2003-10-30
DE69818327T2 DE69818327T2 (de) 2004-07-01

Family

ID=12833479

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69818327T Expired - Fee Related DE69818327T2 (de) 1997-03-05 1998-03-03 Direktmischempfänger zur Unterdrückung von Offset-Gleichspannungen

Country Status (5)

Country Link
US (1) US6175728B1 (de)
EP (1) EP0863606B1 (de)
CN (1) CN1097885C (de)
AU (1) AU750067B2 (de)
DE (1) DE69818327T2 (de)

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US20060141972A1 (en) * 2003-02-20 2006-06-29 Nec Corporation Signal processing device and direct conversion reception device
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US7113760B1 (en) 2003-04-29 2006-09-26 Ami Semiconductor, Inc. Direct conversion receiver for amplitude modulated signals using linear/log filtering
US7139546B1 (en) 2003-04-29 2006-11-21 Ami Semiconductor, Inc. Up-conversion of a down-converted baseband signal in a direct conversion architecture without the baseband signal passing through active elements
US7197091B1 (en) * 2003-05-06 2007-03-27 Ami Semiconductor, Inc. Direct conversion receiver with direct current offset correction circuitry
US7006809B2 (en) * 2003-05-06 2006-02-28 Ami Semiconductor, Inc. Adaptive diversity receiver architecture
US7412222B2 (en) 2003-05-20 2008-08-12 Broadcom Corporation Quadrature correction method for analog television reception using direct-conversion tuners
US7295250B2 (en) * 2003-07-31 2007-11-13 Broadcom Corporation Apparatus and method for restoring DC spectrum for analog television reception using direct conversion turners
DE602004025907D1 (de) * 2004-06-04 2010-04-22 Infineon Technologies Ag Vorrichtung zur DC-Kompensation in einem Demodulator
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US7583765B2 (en) 2005-04-26 2009-09-01 Skyworks Solutions, Inc. DC offset detection and cancellation in a receiver
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US8417490B1 (en) 2009-05-11 2013-04-09 Eagle Harbor Holdings, Llc System and method for the configuration of an automotive vehicle with modeled sensors
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Also Published As

Publication number Publication date
CN1202767A (zh) 1998-12-23
EP0863606B1 (de) 2003-09-24
CN1097885C (zh) 2003-01-01
EP0863606A1 (de) 1998-09-09
DE69818327T2 (de) 2004-07-01
AU750067B2 (en) 2002-07-11
US6175728B1 (en) 2001-01-16
AU5645898A (en) 1998-09-10

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee