Switched impedance synthesis transmit antenna matching system for electrically small antenna radiators
First Claim
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1. A system for transmitting information comprising:
- a transmit signal source of a broadband variable transmission signal;
an electrically short antenna coupled to said transmit signal source for radiating said broadband variable transmission signal;
a first dynamically controlled variable reactive element disposed in series with said electrically short antenna;
a second dynamically controlled variable reactive element shunting to ground across an antenna circuit of said electrically short antenna and said first dynamically controlled variable reactive element; and
a source of control signals which is responsive to both a voltage level and a current level of said broadband variable transmission signal from said transmit signal source and coupled to and configured to provide dynamic control of said first dynamically controlled variable reactive element and said second dynamically variable reactive element, in response to said broadband variable transmission signal.
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Abstract
A system for transmitting a broadband signal over an electrically short antenna which includes a plurality of switched impedance synthesis transmit antenna matching circuits which are dynamically controlled with knowledge of the transmitting broadband signal to match the dynamic impedance of the electrically short antenna during transmission.
8 Citations
3 Claims
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1. A system for transmitting information comprising:
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a transmit signal source of a broadband variable transmission signal; an electrically short antenna coupled to said transmit signal source for radiating said broadband variable transmission signal; a first dynamically controlled variable reactive element disposed in series with said electrically short antenna; a second dynamically controlled variable reactive element shunting to ground across an antenna circuit of said electrically short antenna and said first dynamically controlled variable reactive element; and a source of control signals which is responsive to both a voltage level and a current level of said broadband variable transmission signal from said transmit signal source and coupled to and configured to provide dynamic control of said first dynamically controlled variable reactive element and said second dynamically variable reactive element, in response to said broadband variable transmission signal. - View Dependent Claims (2, 3)
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Specification
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Current AssigneeRockwell Collins, Inc. (Raytheon Technologies Corporation d/b/a RTX)
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Original AssigneeRockwell Collins, Inc. (Raytheon Technologies Corporation d/b/a RTX)
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InventorsCripe, David W., Patten, Scott L., Wolf, Jeremiah D., West, James B.
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Primary Examiner(s)Le, Nhan
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Application NumberUS12/284,638Time in Patent Office1,406 DaysField of Search455/75, 455/76, 455/108, 455/109, 455118-121, 455/122, 455/123, 455/129, 455/550.1US Class Current455/129CPC Class CodesH04B 1/0458 Arrangements for matching a...
