HK1032157A1 - Low noise gilbert multiplier cells and quadrature modulators, and related methods - Google Patents

Low noise gilbert multiplier cells and quadrature modulators, and related methods

Info

Publication number
HK1032157A1
HK1032157A1 HK01102426A HK01102426A HK1032157A1 HK 1032157 A1 HK1032157 A1 HK 1032157A1 HK 01102426 A HK01102426 A HK 01102426A HK 01102426 A HK01102426 A HK 01102426A HK 1032157 A1 HK1032157 A1 HK 1032157A1
Authority
HK
Hong Kong
Prior art keywords
low noise
related methods
quadrature modulators
gilbert multiplier
multiplier cells
Prior art date
Application number
HK01102426A
Other languages
English (en)
Inventor
Aristotle Hadjichristos
Original Assignee
Ericsson Inc
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 Ericsson Inc filed Critical Ericsson Inc
Publication of HK1032157A1 publication Critical patent/HK1032157A1/xx

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/52—Modulators in which carrier or one sideband is wholly or partially suppressed
    • H03C1/54—Balanced modulators, e.g. bridge type, ring type or double balanced type
    • H03C1/542—Balanced modulators, e.g. bridge type, ring type or double balanced type comprising semiconductor devices with at least three electrodes
    • H03C1/545—Balanced modulators, e.g. bridge type, ring type or double balanced type comprising semiconductor devices with at least three electrodes using bipolar transistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/09—Modifications of modulator for regulating the mean frequency
    • H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
    • H03C3/0958—Modifications of modulator for regulating the mean frequency using a phase locked loop applying frequency modulation by varying the characteristics of the voltage controlled oscillator
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/38—Angle modulation by converting amplitude modulation to angle modulation
    • H03C3/40—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/02—Details
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C2200/00—Indexing scheme relating to details of modulators or modulation methods covered by H03C
    • H03C2200/0004—Circuit elements of modulators
    • H03C2200/0012—Emitter or source coupled transistor pairs or long tail pairs
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C2200/00—Indexing scheme relating to details of modulators or modulation methods covered by H03C
    • H03C2200/0004—Circuit elements of modulators
    • H03C2200/002—Filters with particular characteristics
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C2200/00—Indexing scheme relating to details of modulators or modulation methods covered by H03C
    • H03C2200/0004—Circuit elements of modulators
    • H03C2200/0025—Gilbert multipliers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C2200/00—Indexing scheme relating to details of modulators or modulation methods covered by H03C
    • H03C2200/0037—Functional aspects of modulators
    • H03C2200/0058—Quadrature arrangements
HK01102426A 1997-09-08 2001-04-04 Low noise gilbert multiplier cells and quadrature modulators, and related methods HK1032157A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/925,572 US5847623A (en) 1997-09-08 1997-09-08 Low noise Gilbert Multiplier Cells and quadrature modulators
PCT/US1998/018303 WO1999013568A1 (en) 1997-09-08 1998-09-03 Low noise gilbert multiplier cells and quadrature modulators, and related methods

Publications (1)

Publication Number Publication Date
HK1032157A1 true HK1032157A1 (en) 2001-07-06

Family

ID=25451933

Family Applications (1)

Application Number Title Priority Date Filing Date
HK01102426A HK1032157A1 (en) 1997-09-08 2001-04-04 Low noise gilbert multiplier cells and quadrature modulators, and related methods

Country Status (10)

Country Link
US (1) US5847623A (zh)
EP (1) EP1012963B1 (zh)
KR (1) KR100356004B1 (zh)
CN (1) CN1113452C (zh)
AU (1) AU739047B2 (zh)
BR (1) BR9812181A (zh)
CA (1) CA2301734A1 (zh)
DE (1) DE69816998D1 (zh)
HK (1) HK1032157A1 (zh)
WO (1) WO1999013568A1 (zh)

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Also Published As

Publication number Publication date
EP1012963B1 (en) 2003-08-06
CN1113452C (zh) 2003-07-02
US5847623A (en) 1998-12-08
KR20010023755A (ko) 2001-03-26
KR100356004B1 (ko) 2002-10-12
CA2301734A1 (en) 1999-03-18
AU9217798A (en) 1999-03-29
EP1012963A1 (en) 2000-06-28
DE69816998D1 (de) 2003-09-11
WO1999013568A1 (en) 1999-03-18
BR9812181A (pt) 2000-07-18
CN1269921A (zh) 2000-10-11
AU739047B2 (en) 2001-10-04

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Legal Events

Date Code Title Description
PF Patent in force
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20070903