CA953369A - Combined tuning and signal strength indicator circuit - Google Patents

Combined tuning and signal strength indicator circuit

Info

Publication number
CA953369A
CA953369A CA120,154A CA120154A CA953369A CA 953369 A CA953369 A CA 953369A CA 120154 A CA120154 A CA 120154A CA 953369 A CA953369 A CA 953369A
Authority
CA
Canada
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
CA120,154A
Other languages
English (en)
Other versions
CA120154S (en
Inventor
Jack Avins
Jack Craft
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
Application granted granted Critical
Publication of CA953369A publication Critical patent/CA953369A/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
CA120,154A 1970-08-26 1971-08-09 Combined tuning and signal strength indicator circuit Expired CA953369A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6701070A 1970-08-26 1970-08-26

Publications (1)

Publication Number Publication Date
CA953369A true CA953369A (en) 1974-08-20

Family

ID=22073149

Family Applications (1)

Application Number Title Priority Date Filing Date
CA120,154A Expired CA953369A (en) 1970-08-26 1971-08-09 Combined tuning and signal strength indicator circuit

Country Status (9)

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

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
DE3533330A1 (de) * 1984-09-18 1986-03-27 Nec Corp., Tokio/Tokyo Schaltung zum detektieren des rauschpegels in einem fm-signal fuer einen am/fm-empfaenger
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
US6668028B1 (en) * 2000-03-29 2003-12-23 Sony Corporation Low-power CDMA receiver
US6625238B2 (en) * 2000-03-29 2003-09-23 Sony Corporation Low power and high linearity receivers with reactively biased front ends
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
US3673499A (en) 1972-06-27
DE2142660A1 (de) 1972-03-02
AU3214071A (en) 1973-02-15
NL176510B (nl) 1984-11-16
DE2142660B2 (de) 1973-10-18
HK44478A (en) 1978-08-18
AU459753B2 (en) 1975-04-10
NL176510C (nl) 1985-04-16
JPS522561B1 (ja) 1977-01-22
FR2106038A5 (ja) 1972-04-28
GB1357807A (en) 1974-06-26
NL7111699A (ja) 1972-02-29

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