JPS6410189A - Transponder device - Google Patents
Transponder deviceInfo
- Publication number
- JPS6410189A JPS6410189A JP62166051A JP16605187A JPS6410189A JP S6410189 A JPS6410189 A JP S6410189A JP 62166051 A JP62166051 A JP 62166051A JP 16605187 A JP16605187 A JP 16605187A JP S6410189 A JPS6410189 A JP S6410189A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- interrogation
- interrogator
- time constant
- detection
- 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
PURPOSE:To suppress the CW interference of an interrogation pulse from an interrogator and to detect an interrogation signal buried in a CW signal by detecting the frequency components of the CW signal. CONSTITUTION:The interrogation signal from the interrogator 10 is received by the antenna 21 of a transponder device 20, passed through a duplexer 22 and a preselector 24, and mixed by a mixer preamplifier 25 with a local signal from a local signal generator 26 to become an IF signal. The output of the mixer preamplifier 25 is inputted to tuning circuits 41 and 42 and a notch filter circuit 43. Its passage output is CW-detected by a corresponding CW detecting circuit, whose detection time constant is specified, so that the corresponding CW detecting circuit generates a detection signal after specifying the detection time constant. A corresponding notch turns off in response to the detection signal, the transmission state of the passage output of a notch filter is turned off, and the CW signal is suppressed and not applied to a trailing decoding circuit 30.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62166051A JP2600688B2 (en) | 1987-07-02 | 1987-07-02 | Transponder device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62166051A JP2600688B2 (en) | 1987-07-02 | 1987-07-02 | Transponder device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6410189A true JPS6410189A (en) | 1989-01-13 |
JP2600688B2 JP2600688B2 (en) | 1997-04-16 |
Family
ID=15824052
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62166051A Expired - Lifetime JP2600688B2 (en) | 1987-07-02 | 1987-07-02 | Transponder device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2600688B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02229838A (en) * | 1984-07-09 | 1990-09-12 | Toray Ind Inc | Readily bondable polyester film |
-
1987
- 1987-07-02 JP JP62166051A patent/JP2600688B2/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02229838A (en) * | 1984-07-09 | 1990-09-12 | Toray Ind Inc | Readily bondable polyester film |
Also Published As
Publication number | Publication date |
---|---|
JP2600688B2 (en) | 1997-04-16 |
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