JPH04223629A - Electric field intensity indicator - Google Patents

Electric field intensity indicator

Info

Publication number
JPH04223629A
JPH04223629A JP2418244A JP41824490A JPH04223629A JP H04223629 A JPH04223629 A JP H04223629A JP 2418244 A JP2418244 A JP 2418244A JP 41824490 A JP41824490 A JP 41824490A JP H04223629 A JPH04223629 A JP H04223629A
Authority
JP
Japan
Prior art keywords
electric field
field intensity
intermediate frequency
amplifier
signal
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
JP2418244A
Other languages
Japanese (ja)
Inventor
Atsushi Ogawa
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP2418244A priority Critical patent/JPH04223629A/en
Publication of JPH04223629A publication Critical patent/JPH04223629A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To exactly detect a received electric field intensity even when an automatic gain control is operated to an intermediate frequency amplifier circuit or the like.
CONSTITUTION: A high frequency signal received by an antenna 1 is converted into an intermediate frequency by a frequency converter 3, and amplified by an intermediate frequency amplifier 5. The output signal of this intermediate frequency amplifier 5 is amplified by a voltage control amplifier 10 which is controlled by an AGC signal outputted from an automatic gain control circuit 7, and inverted by an inverter circuit 11. Therefore, the influence of the AGC is removed from the signal outputted from the voltage control amplifier 10. Thus, this signal is detected by a detector 8, and indicated on a meter 9, so that the electric field intensity received by the antenna can exactly be indicated on the meter 9.
COPYRIGHT: (C)1992,JPO&Japio
JP2418244A 1990-12-25 1990-12-25 Electric field intensity indicator Pending JPH04223629A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2418244A JPH04223629A (en) 1990-12-25 1990-12-25 Electric field intensity indicator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2418244A JPH04223629A (en) 1990-12-25 1990-12-25 Electric field intensity indicator

Publications (1)

Publication Number Publication Date
JPH04223629A true JPH04223629A (en) 1992-08-13

Family

ID=18526144

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2418244A Pending JPH04223629A (en) 1990-12-25 1990-12-25 Electric field intensity indicator

Country Status (1)

Country Link
JP (1) JPH04223629A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103698615A (en) * 2013-12-27 2014-04-02 王志 Multi-frequency-band electromagnetic signal field intensity meter of universal meter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103698615A (en) * 2013-12-27 2014-04-02 王志 Multi-frequency-band electromagnetic signal field intensity meter of universal meter

Similar Documents

Publication Publication Date Title
JPS57138208A (en) Power detecting circuit and gain control circuit using it
JPH02268022A (en) Booster and radio equipment coupled with the booster
JPH0338907A (en) Transmission output power controller
JPS6027234A (en) Receiver
JPH03293908A (en) Antenna device for monitoring insulation
JPH04223629A (en) Electric field intensity indicator
JPS59135915A (en) Input level detecting circuit
JPS5892149A (en) Detecting circuit for input electric field
JPS62218880A (en) Method for detecting partial discharge of electric machinery
JPH02226074A (en) Measuring apparatus
JPS61100670A (en) Apparatus for detecting radiation magnetic field
JPS63287223A (en) Fm/am receiver
JPS59142471A (en) Electric field intensity detecting circuit
JPH04157927A (en) Transmitter
JPS62198810A (en) Image signal amplifying circuit for focus detecting device
JPH04135343A (en) Light receiving system
JPS6358189A (en) Amplifier circuit for radiation detection
JPS57164605A (en) Amplifier
JPH0358510A (en) Amplifier and transmission power controller
JPH03181214A (en) Automatic gain control circuit
JPS61154323A (en) Squelch device
JPH02183680A (en) Automatic gain control circuit
JPS6130789A (en) Photoelectric detection circuit
JPS63232688A (en) Rectifier circuit
JPH033525A (en) Carrier detector