Loop antenna arrangement for inclusion in a television receiver
First Claim
1. An antenna arrangement for inclusion within a television receiver having a tuner, and responsive to signals in selected frequency bands comprising:
- a cabinet for said television receiver having at least two opposing substantially vertical side surfaces and a substantially vertical back surface therebetween, and having a top surface substantially horizontally disposed between said side side surfaces;
a substantially horizontal loop formed of a band of electrically conductive material having a gap defining first and second feed terminals, which loop includesa first portion of said band of electrically conductive material affixed along said top surface between said side surfaces,a second portion of said band of electrically conductive material substantially horizontally affixed along said back surface between said side surfaces,a third band portion of said of electrically conductive material affixed along one of said side surfaces for connecting one end of said first portion of said band to one end of said second portion of said band,a fourth portion of said band of electrically conductive material affixed along the other of said side surfaces for connecting an other end of said first portion of said band to an other end of said second portion of said band, andsaid second, third and fourth portions of said band each having a respective width dimension greater than that of said first portion of said band,whereby the width dimension of said first portion of said band lies in a substantially horizontal plane and the width dimensions of said second, third and fourth portions of said band lie in substantially vertical planes;
tuning circuitry coupled to said first and second feed terminals for tuning said loop over at least a portion of said frequency bands responsive to a control potential, said tuning circuitry being affixed to said cabinet proximate said first and second feed terminals; and
a transmission line for coupling said tuning circuitry to the tuner of said television receiver.
2 Assignments
0 Petitions
Accused Products
Abstract
A VHF television receiving antenna arrangement includes a cabinet having a loop of electrically conductive material disposed on its top, back and sides, preferrably on the inside surfaces thereof. A gap in the loop defines first and second feed terminals to which circuitry for tuning the loop connects. The loop is tuned thereby over at least a portion of the television frequency bands, responsive to a control voltage. Signals from the tuning circuitry are coupled to a television receiver tuner by a transmission line. Such loops can also have capacitors connected across tuning gaps for making the directional response of the loop more uniform at relatively lower frequencies (e.g. VHF channels 2-6) or switching diodes connected across control gaps for changing the directional response of the loop at relatively higher frequencies (e.g. VHF channels 7-13).
27 Citations
27 Claims
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1. An antenna arrangement for inclusion within a television receiver having a tuner, and responsive to signals in selected frequency bands comprising:
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a cabinet for said television receiver having at least two opposing substantially vertical side surfaces and a substantially vertical back surface therebetween, and having a top surface substantially horizontally disposed between said side side surfaces; a substantially horizontal loop formed of a band of electrically conductive material having a gap defining first and second feed terminals, which loop includes a first portion of said band of electrically conductive material affixed along said top surface between said side surfaces, a second portion of said band of electrically conductive material substantially horizontally affixed along said back surface between said side surfaces, a third band portion of said of electrically conductive material affixed along one of said side surfaces for connecting one end of said first portion of said band to one end of said second portion of said band, a fourth portion of said band of electrically conductive material affixed along the other of said side surfaces for connecting an other end of said first portion of said band to an other end of said second portion of said band, and said second, third and fourth portions of said band each having a respective width dimension greater than that of said first portion of said band, whereby the width dimension of said first portion of said band lies in a substantially horizontal plane and the width dimensions of said second, third and fourth portions of said band lie in substantially vertical planes; tuning circuitry coupled to said first and second feed terminals for tuning said loop over at least a portion of said frequency bands responsive to a control potential, said tuning circuitry being affixed to said cabinet proximate said first and second feed terminals; and a transmission line for coupling said tuning circuitry to the tuner of said television receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An antenna arrangement for inclusion in a television receiver having a tuner, and responsive to signals in selected frequency bands comprising:
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a substantially horizontal loop antenna formed of a band of electrically conductive material having a plurality of gaps therein, a first of said gaps defining first and second feed terminals; coupling means for coupling each of said first and second feed terminals to the tuner of said television receiver; switch means connected across at least a second of said gaps and located proximate thereto for selectively making a conductive connection thereacross to produce different directional reception patterns in response to a control signal, wherein said selectively conductive connection provides a low positive resistance connection; and control means including an electrically conductive path provided by said loop antenna for applying said control signal through said feed terminals and said loop antenna to said switch means to produce said different directional reception patterns. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
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27. An antenna arrangement for inclusion within a television receiver having a tuner, and responsive to signals in selected frequency bands comprising:
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a cabinet for said television receiver having at least two opposing substantially vertical sides and a substantially vertical back therebetween, and having a top substantially horizontally disposed between said sides; a substantially horizontal loop formed of a band of electrically conductive material having a gap defining first and second feed terminals, which loop includes a first portion of said band of electrically conductive material disposed along said top between said sides, said first band having a width dimension, a second portion of said band of electrically conductive material substantially horizontally disposed on said back between said sides, a third portion of said band of electrically conductive material disposed on one of said sides for connecting one end of said first portion of said band to one end of said second portion of said band, a fourth portion of said band of electrically conductive material disposed on the other of said sides for connecting an other end of said first portion of said band to an other end of said second portion of said band, and said second, third and fourth portion of said band each having a respective width dimension greater than that of said first portion of said band, whereby the width dimension of said first portion of said band lies in a substantially horizontal plane and the width dimensions of said second, third and fourth portions of said band lie in substantially vertical planes; and a transmission line for coupling said first and second feed terminals of said loop to the tuner of said television receiver.
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Specification