JPS63164717A - Antenna system - Google Patents

Antenna system

Info

Publication number
JPS63164717A
JPS63164717A JP31320586A JP31320586A JPS63164717A JP S63164717 A JPS63164717 A JP S63164717A JP 31320586 A JP31320586 A JP 31320586A JP 31320586 A JP31320586 A JP 31320586A JP S63164717 A JPS63164717 A JP S63164717A
Authority
JP
Japan
Prior art keywords
transmission
reception
signal
abnormality
circuit
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.)
Pending
Application number
JP31320586A
Other languages
Japanese (ja)
Inventor
Toshihiko Aoki
Susumu Hishinuma
Shinkei Orime
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP31320586A priority Critical patent/JPS63164717A/en
Publication of JPS63164717A publication Critical patent/JPS63164717A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent destruction of a transmission reception circuit and to recognize an abnormality of a transmission/reception switching signal by providing the transmission/reception circuit using the transmission/reception switching signal passing through a transmission/reception switching signal abnormality detecting circuit to switch the transmission and reception and an abnormality signal lines sending an abnormality signal externally therethrough.
CONSTITUTION: A signal width detection circuit 8, a signal width summing circuit 9 and a reference time count circuit 7 of a transmission/reception switching signal fault detection circuit 1 detect an abnormality of the transmission/reception switching signal, an abnormality signal generating circuit 10 and a transmission/reception switching signal control circuit 11 receive the abnormality to change the transmission/ reception switching signal into a reception signal or a transmission signal only. Thus, if an abnormality transmission/reception signal is inputted, the transmission/reception switching signal abnormality detection circuit 1 outputs a transmission/reception switching signal not destroying the transmission/reception circuit 2, then the destruction of the transmission/reception circuit 2 is prevented. Since the abnormality signal outputted from the detection circuit 1 is outputted from the transmission/reception circuit 2 through a fault signal line 6, the abnormality of the transmission/reception switching signal is recognized even externally.
COPYRIGHT: (C)1988,JPO&Japio
JP31320586A 1986-12-26 1986-12-26 Antenna system Pending JPS63164717A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31320586A JPS63164717A (en) 1986-12-26 1986-12-26 Antenna system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31320586A JPS63164717A (en) 1986-12-26 1986-12-26 Antenna system

Publications (1)

Publication Number Publication Date
JPS63164717A true JPS63164717A (en) 1988-07-08

Family

ID=18038366

Family Applications (1)

Application Number Title Priority Date Filing Date
JP31320586A Pending JPS63164717A (en) 1986-12-26 1986-12-26 Antenna system

Country Status (1)

Country Link
JP (1) JPS63164717A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56122247A (en) * 1980-02-29 1981-09-25 Fujitsu Ten Ltd Limiter of transmission time and frequency of transmission/reception device
JPS57150236A (en) * 1981-03-12 1982-09-17 Fujitsu Ten Ltd Channel shared type receiving device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56122247A (en) * 1980-02-29 1981-09-25 Fujitsu Ten Ltd Limiter of transmission time and frequency of transmission/reception device
JPS57150236A (en) * 1981-03-12 1982-09-17 Fujitsu Ten Ltd Channel shared type receiving device

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