AU459753B2 - A combined tuning and signal strength indicator circuit - Google Patents

A combined tuning and signal strength indicator circuit

Info

Publication number
AU459753B2
AU459753B2 AU32140/71A AU3214071A AU459753B2 AU 459753 B2 AU459753 B2 AU 459753B2 AU 32140/71 A AU32140/71 A AU 32140/71A AU 3214071 A AU3214071 A AU 3214071A AU 459753 B2 AU459753 B2 AU 459753B2
Authority
AU
Australia
Prior art keywords
signal strength
strength indicator
indicator circuit
combined tuning
tuning
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.)
Expired
Application number
AU32140/71A
Other languages
English (en)
Other versions
AU3214071A (en
Inventor
AVINA and JACK CRAFT JACK
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.)
RCA Corp
Original Assignee
RCA 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 RCA Corp filed Critical RCA Corp
Publication of AU3214071A publication Critical patent/AU3214071A/en
Application granted granted Critical
Publication of AU459753B2 publication Critical patent/AU459753B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • H03G3/3068—Circuits generating control signals for both R.F. and I.F. stages
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/12—Electrically-operated arrangements for indicating correct tuning
    • H03J3/14—Visual indication, e.g. magic eye
AU32140/71A 1970-08-26 1971-08-09 A combined tuning and signal strength indicator circuit Expired AU459753B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US6701070A 1970-08-26 1970-08-26
USUS67,010 1970-08-26

Publications (2)

Publication Number Publication Date
AU3214071A AU3214071A (en) 1973-02-15
AU459753B2 true AU459753B2 (en) 1975-04-10

Family

ID=22073149

Family Applications (1)

Application Number Title Priority Date Filing Date
AU32140/71A Expired AU459753B2 (en) 1970-08-26 1971-08-09 A combined tuning and signal strength indicator circuit

Country Status (9)

Country Link
US (1) US3673499A (forum.php)
JP (1) JPS522561B1 (forum.php)
AU (1) AU459753B2 (forum.php)
CA (1) CA953369A (forum.php)
DE (1) DE2142660B2 (forum.php)
FR (1) FR2106038A5 (forum.php)
GB (1) GB1357807A (forum.php)
HK (1) HK44478A (forum.php)
NL (1) NL176510C (forum.php)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4039956A (en) * 1975-09-05 1977-08-02 General Motors Corporation Electronic indicator
JPS52153610A (en) * 1976-06-17 1977-12-20 Pioneer Electronic Corp Circuit for driving signal meter of receiver
US4156848A (en) * 1977-05-02 1979-05-29 Motorola, Inc. High dynamic range detector for indicating the quieting level of an FM receiver
JPS54111201A (en) * 1978-02-20 1979-08-31 Nec Corp Signal processing circuit
US4237556A (en) * 1978-03-06 1980-12-02 Trio Kabushiki Kaisha Superheterodyne receiver having distortion reducing circuitry
JPS54121609A (en) * 1978-03-15 1979-09-20 Hitachi Ltd Fm tuner
JPS54128382A (en) * 1978-03-29 1979-10-04 Hitachi Ltd Tuning signal intensity detecting circuit
US4285065A (en) * 1980-01-21 1981-08-18 Motorola, Inc. Radio with audio graphic equalizer
US4327332A (en) * 1980-01-31 1982-04-27 Rca Corporation Circuit arrangement useful in developing decoupled operating voltages for IF amplifier stages of an integrated circuit
JPS56147525A (en) * 1980-04-18 1981-11-16 Hitachi Ltd Reception playback system
US4385400A (en) * 1980-04-24 1983-05-24 Rca Corporation Automatic gain control arrangement useful in an FM radio receiver
GB2094102B (en) * 1981-02-04 1984-06-27 Philips Electronic Associated Radio receiver suitable for use in a spaced carrier area coverage system
JPS57196631A (en) * 1981-05-28 1982-12-02 Sanyo Electric Co Ltd Detecting circuit for pulse noise
US4455681A (en) * 1981-12-21 1984-06-19 Wile Donald T Dual threshold wide band/narrow band AGC
US4442549A (en) * 1982-05-27 1984-04-10 Motorola, Inc. Meter drive circuit
GB2145890B (en) * 1983-09-01 1987-05-20 Plessey Co Plc Signal strength detector
US4674121A (en) * 1984-09-18 1987-06-16 Nec Corporation Circuit for detecting the level of noise in FM signal for use in AM/FM receiver
JPH01208915A (ja) * 1988-02-16 1989-08-22 Sanyo Electric Co Ltd Ｆｍ受信機
US7444126B1 (en) * 1995-12-22 2008-10-28 Microtune (Texas), L.P. Signal-to-noise optimized fully monolithic video receiver IF channel
US6782062B1 (en) * 2000-03-29 2004-08-24 Sony Corporation Low power and high linearity receivers with reactively biased front ends
US6625238B2 (en) * 2000-03-29 2003-09-23 Sony Corporation Low power and high linearity receivers with reactively biased front ends
US6668028B1 (en) * 2000-03-29 2003-12-23 Sony Corporation Low-power CDMA receiver
US7061993B2 (en) * 2001-08-29 2006-06-13 Sony Corporation CDMA receiver architecture for lower bypass switch point
US6687491B2 (en) * 2002-01-18 2004-02-03 Sony Corporation Direct conversion of low power high linearity receiver

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2289840A (en) * 1939-03-01 1942-07-14 Telefunken Gmbh Frequency modulation receiver
DE757508C (de) * 1939-03-02 1954-02-01 Telefunken Gmbh Empfaenger fuer frequenz- oder phasenmodulierte Schwingungen

Also Published As

Publication number Publication date
DE2142660A1 (de) 1972-03-02
HK44478A (en) 1978-08-18
NL176510B (nl) 1984-11-16
FR2106038A5 (forum.php) 1972-04-28
NL176510C (nl) 1985-04-16
AU3214071A (en) 1973-02-15
US3673499A (en) 1972-06-27
DE2142660B2 (de) 1973-10-18
CA953369A (en) 1974-08-20
GB1357807A (en) 1974-06-26
NL7111699A (forum.php) 1972-02-29
JPS522561B1 (forum.php) 1977-01-22

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