CA2145622A1 - Quadrature Modulator Operable in Quasi-Microwave Band of Digital Communication System - Google Patents

Quadrature Modulator Operable in Quasi-Microwave Band of Digital Communication System

Info

Publication number
CA2145622A1
CA2145622A1 CA2145622A CA2145622A CA2145622A1 CA 2145622 A1 CA2145622 A1 CA 2145622A1 CA 2145622 A CA2145622 A CA 2145622A CA 2145622 A CA2145622 A CA 2145622A CA 2145622 A1 CA2145622 A1 CA 2145622A1
Authority
CA
Canada
Prior art keywords
layer
substrate
quadrature modulator
semiconductor integrated
circuit
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.)
Granted
Application number
CA2145622A
Other languages
French (fr)
Other versions
CA2145622C (en
Inventor
Masaho Mineo
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
Publication of CA2145622A1 publication Critical patent/CA2145622A1/en
Application granted granted Critical
Publication of CA2145622C publication Critical patent/CA2145622C/en
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
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
    • H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers
    • H04L27/2064—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers using microwave technology

Abstract

The present invention has an object to provide a compact quadrature modulator manufactured at low cost in such a manner that an input level is low over a wide high frequency band, and few input signals are wrapped around an output terminal. The quadrature modulator is mainly constructed of a multi-layer substrate into which a 90-degree phase shifter is assembled, a semiconductor integrated modulator circuit into which two sets of 2-phase modulators and an output signal in-phase synthesizing circuit, and a lid. The multi-layer substrate is constructed of "n" pieces of layers in total, namely from a first substrate corresponding to an uppermost layer to an n-th substrate corresponding to a lowermost layer. The first substrate layer is a layer for assembling a semiconductor integrated circuit, or a layer for connecting a substrate with a semiconductor integrated circuit. The 90-degree phase shifter is constituted by distributed coupling circuits having wavelengths of .lambda.g/4 by both of wiring patterns formed on the substrates corresponding to an intermediate layer of the multi-layer substrate. A wiring pattern connected to a ground terminal and other circuit components are formed on the n-th substrate layer, i.e., the lowermost layer.
CA002145622A 1994-03-28 1995-03-27 Quadrature modulator operable in quasi-microwave band of digital communication system Expired - Fee Related CA2145622C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP82292/1994 1994-03-28
JP6082292A JP2970394B2 (en) 1994-03-28 1994-03-28 Quadrature modulator

Publications (2)

Publication Number Publication Date
CA2145622A1 true CA2145622A1 (en) 1995-09-29
CA2145622C CA2145622C (en) 1998-11-03

Family

ID=13770473

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002145622A Expired - Fee Related CA2145622C (en) 1994-03-28 1995-03-27 Quadrature modulator operable in quasi-microwave band of digital communication system

Country Status (7)

Country Link
US (1) US5561401A (en)
EP (1) EP0675621B1 (en)
JP (1) JP2970394B2 (en)
CN (1) CN1106742C (en)
CA (1) CA2145622C (en)
DE (1) DE69531469T2 (en)
NO (1) NO317315B1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11163630A (en) * 1997-09-08 1999-06-18 Murata Mfg Co Ltd Oscillator module
KR100317322B1 (en) * 1999-01-25 2001-12-22 김영환 Device of QPSK modulation using the Phase Compensator
US7460612B2 (en) 2004-08-12 2008-12-02 Texas Instruments Incorporated Method and apparatus for a fully digital quadrature modulator
US8085868B2 (en) * 2004-11-03 2011-12-27 Freescale Semiconductor, Inc. Phase modulating and combining circuit
GB0616448D0 (en) * 2006-08-18 2006-09-27 Ici Plc Methods of and apparatus for dispensing powder samples
US11140018B2 (en) * 2014-01-07 2021-10-05 Quantumsine Acquisitions Inc. Method and apparatus for intra-symbol multi-dimensional modulation
US10382246B2 (en) * 2014-01-07 2019-08-13 Quantumsine Acquisitions Inc. Combined amplitude-time and phase modulation

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3273079A (en) * 1964-03-05 1966-09-13 Adams Russel Co Inc Hybrid circuit having separate coupling transformers at the sum port and difference port and having tuning means to improve operation
US3731217A (en) * 1970-04-03 1973-05-01 Research Corp Quasi-optical signal processing utilizing hybrid matrices
JPS61172401A (en) * 1985-01-28 1986-08-04 Mitsubishi Electric Corp Semiconductor phase shifter
JPS61238144A (en) * 1985-04-15 1986-10-23 Nippon Telegr & Teleph Corp <Ntt> Phase adjustment circuit
US5001492A (en) * 1988-10-11 1991-03-19 Hughes Aircraft Company Plural layer co-planar waveguide coupling system for feeding a patch radiator array
JPH02174343A (en) * 1988-12-27 1990-07-05 Oki Electric Ind Co Ltd Orthogonal modulator
JP3088021B2 (en) * 1990-12-20 2000-09-18 株式会社村田製作所 Voltage controlled oscillator
JPH04287542A (en) * 1991-03-18 1992-10-13 Nec Eng Ltd Orthogonal modulation circuit
JP2616280B2 (en) * 1991-04-27 1997-06-04 株式会社村田製作所 Oscillator and manufacturing method thereof
EP0585469B1 (en) * 1992-03-19 1998-11-04 TDK Corporation Hybrid coupler
JPH05347529A (en) * 1992-06-12 1993-12-27 Sony Corp Phase-shifting circuit and orthogonal modem
JPH0730598A (en) * 1993-07-15 1995-01-31 Tdk Corp Quadrature modulator

Also Published As

Publication number Publication date
CA2145622C (en) 1998-11-03
CN1128450A (en) 1996-08-07
DE69531469T2 (en) 2004-06-09
NO317315B1 (en) 2004-10-11
EP0675621B1 (en) 2003-08-13
US5561401A (en) 1996-10-01
JPH07273820A (en) 1995-10-20
NO951132L (en) 1995-09-29
EP0675621A2 (en) 1995-10-04
EP0675621A3 (en) 1998-10-21
NO951132D0 (en) 1995-03-24
CN1106742C (en) 2003-04-23
DE69531469D1 (en) 2003-09-18
JP2970394B2 (en) 1999-11-02

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Legal Events

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EEER Examination request
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