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JPS56138340A - Reception signal level detecting system for superregenerative receiver - Google Patents

Reception signal level detecting system for superregenerative receiver

Info

Publication number
JPS56138340A
JPS56138340A JP4233080A JP4233080A JPS56138340A JP S56138340 A JPS56138340 A JP S56138340A JP 4233080 A JP4233080 A JP 4233080A JP 4233080 A JP4233080 A JP 4233080A JP S56138340 A JPS56138340 A JP S56138340A
Authority
JP
Japan
Prior art keywords
output
signal level
quenching
frequency
superregenerative
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
JP4233080A
Other languages
Japanese (ja)
Other versions
JPS6227572B2 (en
Inventor
Keiichi Mizuguchi
Toshio Abiko
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP4233080A priority Critical patent/JPS56138340A/en
Publication of JPS56138340A publication Critical patent/JPS56138340A/en
Publication of JPS6227572B2 publication Critical patent/JPS6227572B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

PURPOSE:To detect the input signal level of front end of superregenerative system, by detecting the frequency shift in quenching frequency of the quenching oscillating circuit, in the superregenerative receiver. CONSTITUTION:The reception input received at the antenna is amplified at the buffer amplifier 2a of superregenerative system front end, and it is mixed with the quenching output voltage, it is converted into a low-frequency output with the low pass filter 2c. After it is amplified at the next low-frequency amplifier, the alarm device is driven via the rectifying, wave shaping and identifying circuits. The output of the quenching oscillation circuit 2b is fed to the band pass filters 121-12n having the frequency characteristics of f1<f2<...<fn and the frequency shift detecting means consisting of the signal level discriminating output 3. Since the frequency shift of the quenching output is proportional to the level of the electromagnetic wave signal, an output is generated only to the filter 121 when the electromagnetic wave signal level is e1, and an output is generated at the discriminating output D1, allowing to measure the signal level.
JP4233080A 1980-03-31 1980-03-31 Reception signal level detecting system for superregenerative receiver Granted JPS56138340A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4233080A JPS56138340A (en) 1980-03-31 1980-03-31 Reception signal level detecting system for superregenerative receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4233080A JPS56138340A (en) 1980-03-31 1980-03-31 Reception signal level detecting system for superregenerative receiver

Publications (2)

Publication Number Publication Date
JPS56138340A true JPS56138340A (en) 1981-10-28
JPS6227572B2 JPS6227572B2 (en) 1987-06-16

Family

ID=12632989

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4233080A Granted JPS56138340A (en) 1980-03-31 1980-03-31 Reception signal level detecting system for superregenerative receiver

Country Status (1)

Country Link
JP (1) JPS56138340A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011503950A (en) * 2007-11-01 2011-01-27 ヴィディテック アクチェンゲゼルシャフト Improvement of logarithmic detector
US9048943B2 (en) 2013-03-15 2015-06-02 Dockon Ag Low-power, noise insensitive communication channel using logarithmic detector amplifier (LDA) demodulator
US9236892B2 (en) 2013-03-15 2016-01-12 Dockon Ag Combination of steering antennas, CPL antenna(s), and one or more receive logarithmic detector amplifiers for SISO and MIMO applications
US9263787B2 (en) 2013-03-15 2016-02-16 Dockon Ag Power combiner and fixed/adjustable CPL antennas
US9503133B2 (en) 2012-12-03 2016-11-22 Dockon Ag Low noise detection system using log detector amplifier
US9590572B2 (en) 2013-09-12 2017-03-07 Dockon Ag Logarithmic detector amplifier system for use as high sensitivity selective receiver without frequency conversion
US9684807B2 (en) 2013-03-15 2017-06-20 Dockon Ag Frequency selective logarithmic amplifier with intrinsic frequency demodulation capability
US11082014B2 (en) 2013-09-12 2021-08-03 Dockon Ag Advanced amplifier system for ultra-wide band RF communication
US11183974B2 (en) 2013-09-12 2021-11-23 Dockon Ag Logarithmic detector amplifier system in open-loop configuration for use as high sensitivity selective receiver without frequency conversion

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011503950A (en) * 2007-11-01 2011-01-27 ヴィディテック アクチェンゲゼルシャフト Improvement of logarithmic detector
US9621203B2 (en) 2012-12-03 2017-04-11 Dockon Ag Medium communication system using log detector amplifier
US9503133B2 (en) 2012-12-03 2016-11-22 Dockon Ag Low noise detection system using log detector amplifier
US9356561B2 (en) 2013-03-15 2016-05-31 Dockon Ag Logarithmic amplifier with universal demodulation capabilities
US11012953B2 (en) 2013-03-15 2021-05-18 Dockon Ag Frequency selective logarithmic amplifier with intrinsic frequency demodulation capability
US9397382B2 (en) 2013-03-15 2016-07-19 Dockon Ag Logarithmic amplifier with universal demodulation capabilities
US9236892B2 (en) 2013-03-15 2016-01-12 Dockon Ag Combination of steering antennas, CPL antenna(s), and one or more receive logarithmic detector amplifiers for SISO and MIMO applications
EP2974000B1 (en) * 2013-03-15 2024-07-17 Dockon AG Frequency selective logarithmic amplifier with intrinsic frequency demodulation capability
US9048943B2 (en) 2013-03-15 2015-06-02 Dockon Ag Low-power, noise insensitive communication channel using logarithmic detector amplifier (LDA) demodulator
US9684807B2 (en) 2013-03-15 2017-06-20 Dockon Ag Frequency selective logarithmic amplifier with intrinsic frequency demodulation capability
US9263787B2 (en) 2013-03-15 2016-02-16 Dockon Ag Power combiner and fixed/adjustable CPL antennas
US10333475B2 (en) 2013-09-12 2019-06-25 QuantalRF AG Logarithmic detector amplifier system for use as high sensitivity selective receiver without frequency conversion
US11050393B2 (en) 2013-09-12 2021-06-29 Dockon Ag Amplifier system for use as high sensitivity selective receiver without frequency conversion
US11082014B2 (en) 2013-09-12 2021-08-03 Dockon Ag Advanced amplifier system for ultra-wide band RF communication
US11095255B2 (en) 2013-09-12 2021-08-17 Dockon Ag Amplifier system for use as high sensitivity selective receiver without frequency conversion
US11183974B2 (en) 2013-09-12 2021-11-23 Dockon Ag Logarithmic detector amplifier system in open-loop configuration for use as high sensitivity selective receiver without frequency conversion
US9590572B2 (en) 2013-09-12 2017-03-07 Dockon Ag Logarithmic detector amplifier system for use as high sensitivity selective receiver without frequency conversion

Also Published As

Publication number Publication date
JPS6227572B2 (en) 1987-06-16

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