GB1270456A - Radio receiving apparatus - Google Patents

Radio receiving apparatus

Info

Publication number
GB1270456A
GB1270456A GB3079069A GB3079069A GB1270456A GB 1270456 A GB1270456 A GB 1270456A GB 3079069 A GB3079069 A GB 3079069A GB 3079069 A GB3079069 A GB 3079069A GB 1270456 A GB1270456 A GB 1270456A
Authority
GB
United Kingdom
Prior art keywords
frequency
phase
changed
detector
switching 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.)
Expired
Application number
GB3079069A
Inventor
Gwilym Wyn Owen
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.)
Rank Organization Ltd
Original Assignee
Rank Organization 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 Rank Organization Ltd filed Critical Rank Organization Ltd
Priority to GB3079069A priority Critical patent/GB1270456A/en
Publication of GB1270456A publication Critical patent/GB1270456A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/22—Homodyne or synchrodyne circuits
    • H03D1/24—Homodyne or synchrodyne circuits for demodulation of signals wherein one sideband or the carrier has been wholly or partially suppressed

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

1,270,456. Homodyne receivers; phase locked receivers. RANK ORGANIZATION Ltd. 10 June, 1970 [18 June, 1969], No. 30790/69. Headings H3A and H3Q. Receiver apparatus for incoming A.M. signals having sideband assymmetry comprises an arrangement including a local oscillator L for changing the effective carrier frequency, a first and second synchronous detectors A, B for the frequency changed signals operated in phase quadrature with respect to a locally generated switching signal from 12 at the changed carrier frequency, an output of the second detector B being used to adjust the oscillator L for controlling the frequency and phase of the changed carrier frequency. The changed carrier signal after further amplification at 11 is applied to the second detector B along with the local switching signal in phase quadrature to produce an error signal for controlling the local oscillator so that the changed carrier output from detector A corresponds in frequency and phase to the local switching signal.
GB3079069A 1969-06-18 1969-06-18 Radio receiving apparatus Expired GB1270456A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3079069A GB1270456A (en) 1969-06-18 1969-06-18 Radio receiving apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3079069A GB1270456A (en) 1969-06-18 1969-06-18 Radio receiving apparatus

Publications (1)

Publication Number Publication Date
GB1270456A true GB1270456A (en) 1972-04-12

Family

ID=10313170

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3079069A Expired GB1270456A (en) 1969-06-18 1969-06-18 Radio receiving apparatus

Country Status (1)

Country Link
GB (1) GB1270456A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8169312B2 (en) 2009-01-09 2012-05-01 Sirit Inc. Determining speeds of radio frequency tags
US8226003B2 (en) 2006-04-27 2012-07-24 Sirit Inc. Adjusting parameters associated with leakage signals
US8248212B2 (en) 2007-05-24 2012-08-21 Sirit Inc. Pipelining processes in a RF reader
US8416079B2 (en) 2009-06-02 2013-04-09 3M Innovative Properties Company Switching radio frequency identification (RFID) tags
US8427316B2 (en) 2008-03-20 2013-04-23 3M Innovative Properties Company Detecting tampered with radio frequency identification tags
US8446256B2 (en) 2008-05-19 2013-05-21 Sirit Technologies Inc. Multiplexing radio frequency signals
US10062025B2 (en) 2012-03-09 2018-08-28 Neology, Inc. Switchable RFID tag

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8226003B2 (en) 2006-04-27 2012-07-24 Sirit Inc. Adjusting parameters associated with leakage signals
US8248212B2 (en) 2007-05-24 2012-08-21 Sirit Inc. Pipelining processes in a RF reader
US8427316B2 (en) 2008-03-20 2013-04-23 3M Innovative Properties Company Detecting tampered with radio frequency identification tags
US8446256B2 (en) 2008-05-19 2013-05-21 Sirit Technologies Inc. Multiplexing radio frequency signals
US8169312B2 (en) 2009-01-09 2012-05-01 Sirit Inc. Determining speeds of radio frequency tags
US8416079B2 (en) 2009-06-02 2013-04-09 3M Innovative Properties Company Switching radio frequency identification (RFID) tags
US10062025B2 (en) 2012-03-09 2018-08-28 Neology, Inc. Switchable RFID tag
US10878303B2 (en) 2012-03-09 2020-12-29 Neology, Inc. Switchable RFID tag

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