JPS5586202A - High-frequency detection circuit - Google Patents

High-frequency detection circuit

Info

Publication number
JPS5586202A
JPS5586202A JP16174678A JP16174678A JPS5586202A JP S5586202 A JPS5586202 A JP S5586202A JP 16174678 A JP16174678 A JP 16174678A JP 16174678 A JP16174678 A JP 16174678A JP S5586202 A JPS5586202 A JP S5586202A
Authority
JP
Japan
Prior art keywords
signal
terminal
filter
frequency
sent
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
JP16174678A
Other languages
Japanese (ja)
Other versions
JPS6211523B2 (en
Inventor
Tatsuya Koike
Akihiko Inoue
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP16174678A priority Critical patent/JPS5586202A/en
Publication of JPS5586202A publication Critical patent/JPS5586202A/en
Publication of JPS6211523B2 publication Critical patent/JPS6211523B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies

Landscapes

  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

PURPOSE:To improve detection sensitivity by combining an unreversible circuit, allowing several different-frequency signals to pass through, with a filter which allows or disallows them to pass through independently. CONSTITUTION:Hybrid 11 where signal lines 11a and 11b are connected is connected to circuit systems 15 and 16; circuit system 15 is formed of filter 15a, terminal 15e, curculator 15g, and terminal 15h, and circuit system 16 is similarly formed. By way of hybrid 11, signals from signal lines 11a and 11b of frequencies f1 and f2 are supplied to filter 15a, where while the signal of frequency f2 is cut off, that of frequency f1 is passed and sent to terminal 15e, so that the signal of f2 will be sent out as a detection signal to terminal 15h by circulator 15g. Therefore, the signal of f1 sent to terminals 15e and 16h can be used effectively without mutual interference, so that detection sensitivity can be improved.
JP16174678A 1978-12-25 1978-12-25 High-frequency detection circuit Granted JPS5586202A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16174678A JPS5586202A (en) 1978-12-25 1978-12-25 High-frequency detection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16174678A JPS5586202A (en) 1978-12-25 1978-12-25 High-frequency detection circuit

Publications (2)

Publication Number Publication Date
JPS5586202A true JPS5586202A (en) 1980-06-28
JPS6211523B2 JPS6211523B2 (en) 1987-03-13

Family

ID=15741091

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16174678A Granted JPS5586202A (en) 1978-12-25 1978-12-25 High-frequency detection circuit

Country Status (1)

Country Link
JP (1) JPS5586202A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4933680A (en) * 1988-09-29 1990-06-12 Hughes Aircraft Company Microstrip antenna system with multiple frequency elements

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4922060A (en) * 1972-06-19 1974-02-27

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4922060A (en) * 1972-06-19 1974-02-27

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4933680A (en) * 1988-09-29 1990-06-12 Hughes Aircraft Company Microstrip antenna system with multiple frequency elements

Also Published As

Publication number Publication date
JPS6211523B2 (en) 1987-03-13

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