CA2054859A1 - Down converter for satellite communication system - Google Patents

Down converter for satellite communication system

Info

Publication number
CA2054859A1
CA2054859A1 CA 2054859 CA2054859A CA2054859A1 CA 2054859 A1 CA2054859 A1 CA 2054859A1 CA 2054859 CA2054859 CA 2054859 CA 2054859 A CA2054859 A CA 2054859A CA 2054859 A1 CA2054859 A1 CA 2054859A1
Authority
CA
Canada
Prior art keywords
signal
intermediate frequency
next stage
stage component
down converter
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
CA 2054859
Other languages
French (fr)
Other versions
CA2054859C (en
Inventor
Hirotaka Fujisaki
Yukiro Kashima
Akihito Deki
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.)
Panasonic Holdings Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2054859A1 publication Critical patent/CA2054859A1/en
Application granted granted Critical
Publication of CA2054859C publication Critical patent/CA2054859C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

A down converter device is used in a satellite communication system to convert a microwave signal to an intermediate frequency signal by the use of a standard signal having a frequency range of several to several tens of MHz, and to apply the intermediate frequency signal to a next stage component. The down converter includes a mixer for producing the intermediate frequency signal which is indicative of the frequency difference between the standard signal and the microwave signal. A separator includes a first terminal for receiving the intermediate frequency signal, a second terminal for producing and supplying the intermediate frequency signal to the next stage component and for receiving the standard signal from the next stage component, a first filter for separating the standard signal, and a third terminal for producing the standard signal to the mixing means. The system has the advantage over prior down converters that only a single connection is required between the converter and the next stage component.
CA 2054859 1990-11-05 1991-11-04 Down converter for satellite communication system Expired - Fee Related CA2054859C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2-300798 1990-05-11
JP30069890A JPH04173617A (en) 1990-11-06 1990-11-06 Transporting device

Publications (2)

Publication Number Publication Date
CA2054859A1 true CA2054859A1 (en) 1992-05-06
CA2054859C CA2054859C (en) 1995-10-10

Family

ID=17888008

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2054859 Expired - Fee Related CA2054859C (en) 1990-11-05 1991-11-04 Down converter for satellite communication system

Country Status (2)

Country Link
JP (1) JPH04173617A (en)
CA (1) CA2054859C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5344366B2 (en) * 2008-09-05 2013-11-20 村田機械株式会社 Transport system

Also Published As

Publication number Publication date
JPH04173617A (en) 1992-06-22
CA2054859C (en) 1995-10-10

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed