JPS5758448A - Forming circuit for residual side wave band - Google Patents

Forming circuit for residual side wave band

Info

Publication number
JPS5758448A
JPS5758448A JP13333580A JP13333580A JPS5758448A JP S5758448 A JPS5758448 A JP S5758448A JP 13333580 A JP13333580 A JP 13333580A JP 13333580 A JP13333580 A JP 13333580A JP S5758448 A JPS5758448 A JP S5758448A
Authority
JP
Japan
Prior art keywords
phase difference
vsb
wave band
branching device
output
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
JP13333580A
Other languages
Japanese (ja)
Other versions
JPS6057259B2 (en
Inventor
Mitsuo Tsunoishi
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP13333580A priority Critical patent/JPS6057259B2/en
Publication of JPS5758448A publication Critical patent/JPS5758448A/en
Publication of JPS6057259B2 publication Critical patent/JPS6057259B2/en
Expired 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
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/04—Modulator circuits; Transmitter circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

PURPOSE:To equalize the group delay distortion in a VSB forming circuit network with a basic wave band, by reducing the scale of circuit, through the insertion of an amplitude equalizer to a modulation circuit using a 90 deg. phase difference branching device and two balanced modulators. CONSTITUTION:A basic wave signal cos(2pift+theta0) from an input terminal 1 is applied to a 90 deg. phase difference branching device 3 through an amplitude equalizer 2. The amplitude equalizer 2 gives a contant loss at a frequency equal to the frequency width of a residual side wave band (VSB) or more, and a loss greater by 3dB than a constant loss at frequency zero is given. The phase difference theta between output 5 and 6 of the branching device 3 is in the relation of theta1-theta2. Each output is balanced and modulated at balance modulators 7, 8 with two carriers cos2pifct and cos2pifct having phase difference 90 deg.. a carrier band signal with VSB forming can be outputted from a terminal 12 by adding each modulated output at an adder 11.
JP13333580A 1980-09-25 1980-09-25 Residual sideband shaping circuit Expired JPS6057259B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13333580A JPS6057259B2 (en) 1980-09-25 1980-09-25 Residual sideband shaping circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13333580A JPS6057259B2 (en) 1980-09-25 1980-09-25 Residual sideband shaping circuit

Publications (2)

Publication Number Publication Date
JPS5758448A true JPS5758448A (en) 1982-04-08
JPS6057259B2 JPS6057259B2 (en) 1985-12-13

Family

ID=15102306

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13333580A Expired JPS6057259B2 (en) 1980-09-25 1980-09-25 Residual sideband shaping circuit

Country Status (1)

Country Link
JP (1) JPS6057259B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60164159U (en) * 1984-04-09 1985-10-31 蟹　真夫 transmission device
JPS61502000A (en) * 1984-04-26 1986-09-11 チンザ−・テクステイルマシイネン・ゲゼルシヤフト・ミト・ベシユレンクテル・ハフツング spinning machine
JPS6312725A (en) * 1986-07-01 1988-01-20 Kanebo Ltd Double twister
JPS63186780U (en) * 1987-05-25 1988-11-30
JP2010104253A (en) * 2008-10-28 2010-05-13 Akio Kobayashi Stretchable herbicide application cover

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6394748A (en) * 1986-10-09 1988-04-25 Aihon Kk Cordless talking equipment
US8834792B2 (en) 2009-11-13 2014-09-16 3M Innovative Properties Company Systems for processing sample processing devices
CN103547370A (en) 2011-05-18 2014-01-29 3M创新有限公司 Systems and methods for volumetric metering on a sample processing device
MX336651B (en) 2011-05-18 2016-01-27 3M Innovative Properties Co Systems and methods for valving on a sample processing device.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60164159U (en) * 1984-04-09 1985-10-31 蟹　真夫 transmission device
JPS61502000A (en) * 1984-04-26 1986-09-11 チンザ−・テクステイルマシイネン・ゲゼルシヤフト・ミト・ベシユレンクテル・ハフツング spinning machine
JPS6312725A (en) * 1986-07-01 1988-01-20 Kanebo Ltd Double twister
JPS63186780U (en) * 1987-05-25 1988-11-30
JP2010104253A (en) * 2008-10-28 2010-05-13 Akio Kobayashi Stretchable herbicide application cover

Also Published As

Publication number Publication date
JPS6057259B2 (en) 1985-12-13

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