JPS59175182U - Electric field strength measuring device - Google Patents

Electric field strength measuring device

Info

Publication number
JPS59175182U
JPS59175182U JP6968683U JP6968683U JPS59175182U JP S59175182 U JPS59175182 U JP S59175182U JP 6968683 U JP6968683 U JP 6968683U JP 6968683 U JP6968683 U JP 6968683U JP S59175182 U JPS59175182 U JP S59175182U
Authority
JP
Japan
Prior art keywords
changeover switch
output
bandpass filter
signal
frequency
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
JP6968683U
Other languages
Japanese (ja)
Other versions
JPS6331015Y2 (en
Inventor
石原　昌彦
神谷　公貴
Original Assignee
デイエツクスアンテナ株式会社
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 デイエツクスアンテナ株式会社 filed Critical デイエツクスアンテナ株式会社
Priority to JP6968683U priority Critical patent/JPS59175182U/en
Publication of JPS59175182U publication Critical patent/JPS59175182U/en
Application granted granted Critical
Publication of JPS6331015Y2 publication Critical patent/JPS6331015Y2/ja
Granted legal-status Critical Current

Links

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来の電界強度測定器のブロック図、第２図は
この考案による電界強度測定器の第１の実施例のブロッ
ク図、第３図は同第２の実施例のブロック図である。 １４・・・広帯域バンドパスフィルタ、１８・・・周波
数変換器、２０・・・第１の切換スイッチ、２２゜３０
．３６・・・検波器、２４・・・混合器、２６・・・可
変周波数発振器、２８・・・単チヤンネルバンドパスフ
ィルタ、３２・・・第２の切換スイッチ、３４・・・レ
ベル表示部。Fig. 1 is a block diagram of a conventional electric field strength measuring device, Fig. 2 is a block diagram of a first embodiment of the electric field strength measuring device according to this invention, and Fig. 3 is a block diagram of a second embodiment of the same. . 14... Broadband band pass filter, 18... Frequency converter, 20... First changeover switch, 22°30
．． 36... Detector, 24... Mixer, 26... Variable frequency oscillator, 28... Single channel band pass filter, 32... Second changeover switch, 34... Level display section.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] アンテナで受けた所定周波数帯域の放送信号を周波数変
換器が固定局部発振信号と混合して周波数変換した第１
中間周波信号を入力して不要帯域信号を除去する広帯域
バンドパスフィルタと、このパッドパスフィルタの出力
側に設けた第１の切換スイッチと、第１の切換スイッチ
を介して供給された上記広帯域バンドパスフィルタの出
力を可変周波数発振器からの周波数可変局部発振信号と
混合して第２中間周波信号に変換する混合器と、″　　
この混合器の出力側に設けられた第２中間周波信号のみ
を通過させる単チヤンネルバンドパスフィルタと、第２
の切換スイッチと、第１の切換スイッチと第２の切換ス
イッチとの間及び上記単チヤンネルバンドパスフィルタ
と第２の切換スイッチとの間の双方にまたは、上記単チ
ヤンネルバンドパスフィルタの出力及び第・１の切換ス
イッチを介して供給される上記広帯域バンドパスフィル
タの出力が切換えて供給されるように第２の切換スイッ
チの後段に単独に設けた検波器と、この検波器の出力を
表示する表示部とからなる電界強度測定器。The first frequency converter mixes the broadcast signal in a predetermined frequency band received by the antenna with a fixed local oscillation signal to convert the frequency.
A wideband bandpass filter that inputs an intermediate frequency signal and removes unnecessary band signals, a first changeover switch provided on the output side of this padpass filter, and the wideband band supplied via the first changeover switch. a mixer that mixes the output of the pass filter with a variable frequency local oscillation signal from a variable frequency oscillator and converts it into a second intermediate frequency signal;
a single-channel bandpass filter provided on the output side of the mixer that passes only the second intermediate frequency signal;
a changeover switch, and both between the first changeover switch and the second changeover switch and between the single channel bandpass filter and the second changeover switch, or between the output of the single channel bandpass filter and the second changeover switch.・A detector is provided separately after the second changeover switch so that the output of the broadband bandpass filter that is supplied through the first changeover switch is switched and supplied, and the output of this detector is displayed. An electric field strength measuring device consisting of a display section.
JP6968683U 1983-05-09 1983-05-09 Electric field strength measuring device Granted JPS59175182U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6968683U JPS59175182U (en) 1983-05-09 1983-05-09 Electric field strength measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6968683U JPS59175182U (en) 1983-05-09 1983-05-09 Electric field strength measuring device

Publications (2)

Publication Number Publication Date
JPS59175182U true JPS59175182U (en) 1984-11-22
JPS6331015Y2 JPS6331015Y2 (en) 1988-08-18

Family

ID=30199837

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6968683U Granted JPS59175182U (en) 1983-05-09 1983-05-09 Electric field strength measuring device

Country Status (1)

Country Link
JP (1) JPS59175182U (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5847174U (en) * 1981-09-22 1983-03-30 日本ビクター株式会社 Electric field strength detection circuit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5847174B2 (en) * 1980-01-26 1983-10-20 普 中村 household rice cooker

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5847174U (en) * 1981-09-22 1983-03-30 日本ビクター株式会社 Electric field strength detection circuit

Also Published As

Publication number Publication date
JPS6331015Y2 (en) 1988-08-18

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