CA2054859A1 - Down converter for satellite communication system - Google Patents
Down converter for satellite communication systemInfo
- 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
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.
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)
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 |
-
1990
- 1990-11-06 JP JP30069890A patent/JPH04173617A/en active Pending
-
1991
- 1991-11-04 CA CA 2054859 patent/CA2054859C/en not_active Expired - Fee Related
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 |