JPS60169963U - Transmitter for digital signal transmission - Google Patents

Transmitter for digital signal transmission

Info

Publication number
JPS60169963U
JPS60169963U JP5753384U JP5753384U JPS60169963U JP S60169963 U JPS60169963 U JP S60169963U JP 5753384 U JP5753384 U JP 5753384U JP 5753384 U JP5753384 U JP 5753384U JP S60169963 U JPS60169963 U JP S60169963U
Authority
JP
Japan
Prior art keywords
signal
digital signal
transmitter
amplifier
points
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
JP5753384U
Other languages
Japanese (ja)
Other versions
JPH0543555Y2 (en
Inventor
芳彦 赤岩
Original Assignee
日本電気株式会社
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 日本電気株式会社 filed Critical 日本電気株式会社
Priority to JP5753384U priority Critical patent/JPS60169963U/en
Priority to US06/722,256 priority patent/US4817116A/en
Priority to AU41074/85A priority patent/AU589119B2/en
Priority to NO85851489A priority patent/NO169269C/en
Priority to CA000479247A priority patent/CA1236168A/en
Priority to SE8501861A priority patent/SE460326B/en
Priority to FI851513A priority patent/FI80175C/en
Publication of JPS60169963U publication Critical patent/JPS60169963U/en
Application granted granted Critical
Publication of JPH0543555Y2 publication Critical patent/JPH0543555Y2/ja
Granted legal-status Critical Current

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  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の送信機の概要を示すブロック図、第２
図および第４図はそれぞれ本考案の送信機における直交
変調器の第１および第２の実施例を示すブロック図、第
３図および第５図はそれぞ　　。 れ本考案の送信機における直交変調器の第１および第２
の実施例に対する信号点配置および軌跡を示す複素振幅
平面図、第６図は本考案の送信機における増幅器の実施
例を示すブロック図、第７図は増幅器の入出力特性を説
明するための図である。これらの図において、１２０は
直交変調器、１３０．２５０，４５０は局部発振器、１
３１゜２４０．４５５は位相差分離回路、１３２，２３
１．２３２，４４１，４４２，４４３，４４４はミクサ
、１４０は増幅器、１５０，５４０は信号比較回路、１
６０は送信アンテナ、２２１，２２２．４３１，４３２
，４３３．４３４は低域通過フィルタ、２６０，４６０
は加算回路、５２０は位相可変回路、５３０は利得可変
増幅器、５４１．５４２は振幅検波器、５４３は減算回
路、５４４は位相検波器である。Figure 1 is a block diagram showing an overview of the transmitter of the present invention, Figure 2
4 and 4 are block diagrams respectively showing first and second embodiments of a quadrature modulator in a transmitter of the present invention, and FIGS. 3 and 5, respectively. The first and second quadrature modulators in the transmitter of the present invention
FIG. 6 is a block diagram showing an embodiment of the amplifier in the transmitter of the present invention, and FIG. 7 is a diagram for explaining the input/output characteristics of the amplifier. It is. In these figures, 120 is a quadrature modulator, 130, 250, 450 is a local oscillator, 1
31°240.455 is a phase difference separation circuit, 132, 23
1. 232, 441, 442, 443, 444 are mixers, 140 is an amplifier, 150, 540 is a signal comparison circuit, 1
60 is a transmitting antenna, 221, 222. 431, 432
, 433.434 is a low pass filter, 260, 460
520 is an adder circuit, 520 is a variable phase circuit, 530 is a variable gain amplifier, 541, 542 is an amplitude detector, 543 is a subtraction circuit, and 544 is a phase detector.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 送信ディジタル信号を変調入力とする直交変調器と該変
調器出力を増幅する増幅器とからなるディジタル信号伝
送用送信器であって、前記直交変調器は複素振幅平面上
で規定される信号点を位相の順番に並べて、位相につい
て順次１個おきに取って得られる信号点の全体を第１の
信号点グループとし、残りの信号点の全体を第２の信号
点グループとするとき、第１の信号点のグループと第２
の信号点グループのうちの送信ディジタル信号に対応す
る１つの信号点を時間的に交互に選択する直交変調器で
あり、前記増幅器はその入力信号とその出力信号の振幅
あるいは位相あるいはこれらの双方を比較して得られる
誤差信号によって帰還制御を施す構成の増幅器であるこ
とを特徴とするディジタル信号伝送用送信機。A transmitter for digital signal transmission comprising a quadrature modulator that receives a transmitted digital signal as a modulation input and an amplifier that amplifies the output of the modulator, the quadrature modulator converting signal points defined on a complex amplitude plane into phases. The first signal point group is the first signal point group, and the remaining signal points are the second signal point group. Group of points and second
The amplifier is a quadrature modulator that temporally alternately selects one signal point corresponding to a transmitted digital signal from a group of signal points, and the amplifier modulates the amplitude and/or phase of its input signal and its output signal. 1. A transmitter for digital signal transmission, characterized in that it is an amplifier configured to perform feedback control using an error signal obtained by comparison.
JP5753384U 1984-04-17 1984-04-19 Transmitter for digital signal transmission Granted JPS60169963U (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP5753384U JPS60169963U (en) 1984-04-19 1984-04-19 Transmitter for digital signal transmission
US06/722,256 US4817116A (en) 1984-04-17 1985-04-12 Digital radio communication system utilizing quadrature modulated carrier waves
AU41074/85A AU589119B2 (en) 1984-04-17 1985-04-12 Digital radio communication system utilizing quadrature modulated carrier waves
NO85851489A NO169269C (en) 1984-04-17 1985-04-15 DIGITAL RADIO COMMUNICATION SYSTEM
CA000479247A CA1236168A (en) 1984-04-17 1985-04-16 Digital radio communication system utilizing quadrature modulated carrier waves
SE8501861A SE460326B (en) 1984-04-17 1985-04-16 DIGITAL RADIO COMMUNICATION SYSTEM USING QUADRATURE-MODULATED EMERGENCIES
FI851513A FI80175C (en) 1984-04-17 1985-04-16 Digital telecommunication system where quadrature modulated carrier signals are used

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5753384U JPS60169963U (en) 1984-04-19 1984-04-19 Transmitter for digital signal transmission

Publications (2)

Publication Number Publication Date
JPS60169963U true JPS60169963U (en) 1985-11-11
JPH0543555Y2 JPH0543555Y2 (en) 1993-11-02

Family

ID=30582153

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5753384U Granted JPS60169963U (en) 1984-04-17 1984-04-19 Transmitter for digital signal transmission

Country Status (1)

Country Link
JP (1) JPS60169963U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012023512A (en) * 2010-07-14 2012-02-02 Nec Corp Receiver and transmitter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900823A (en) * 1973-03-28 1975-08-19 Nathan O Sokal Amplifying and processing apparatus for modulated carrier signals
JPS5637756A (en) * 1979-09-05 1981-04-11 Nec Corp Transmitting device for time-division multiple connection system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900823A (en) * 1973-03-28 1975-08-19 Nathan O Sokal Amplifying and processing apparatus for modulated carrier signals
JPS5637756A (en) * 1979-09-05 1981-04-11 Nec Corp Transmitting device for time-division multiple connection system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012023512A (en) * 2010-07-14 2012-02-02 Nec Corp Receiver and transmitter

Also Published As

Publication number Publication date
JPH0543555Y2 (en) 1993-11-02

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