Tunable Antenna Arrangement
First Claim
Patent Images
1. An antenna arrangement comprising:
- an antenna;
a first variable impedance circuit connected between ground and a first point of the antenna; and
a second variable impedance circuit connected between ground and a second I O point of the antenna and a connection from a third point of the antenna to ground wherein;
the first point of the antenna and the second point of the antenna are separated along the length of the antenna and the impedance of the first variable impedance circuit and the second variable impedance circuit control 15 the resonant frequency of the antenna arrangement.
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Accused Products
Abstract
An antenna arrangement including an antenna; a first variable impedance circuit connected between ground and a first point of the antenna; and a second variable impedance circuit connected between ground and a second point of the antenna and a connection from a third point of the antenna to ground wherein; the first point of the antenna and the second point of the antenna are separated along the length of the antenna and the impedance of the first variable impedance circuit and the second variable impedance circuit control the resonant frequency of the antenna arrangement.
54 Citations
26 Claims
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1. An antenna arrangement comprising:
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an antenna; a first variable impedance circuit connected between ground and a first point of the antenna; and a second variable impedance circuit connected between ground and a second I O point of the antenna and a connection from a third point of the antenna to ground wherein; the first point of the antenna and the second point of the antenna are separated along the length of the antenna and the impedance of the first variable impedance circuit and the second variable impedance circuit control 15 the resonant frequency of the antenna arrangement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 26)
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15. A method comprising:
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controlling the impedance of a first variable impedance circuit connected between ground and a first point of an antenna; controlling the impedance of a second variable impedance circuit connected between ground and a second point of the antenna providing a connection from a third point of the antenna to ground wherein; the first point of the antenna and the second point of the antenna are separated along the length of the antenna and the impedance of the first variable impedance circuit and the second variable impedance circuit control the resonant frequency of an antenna arrangement comprising the antenna. - View Dependent Claims (16, 17)
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18. (canceled)
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19. (canceled)
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20. An antenna arrangement comprising:
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an antenna having a connection from a first point of the antenna to ground, a feed connection and a connection from a third point of the antenna to ground wherein; a first variable impedance circuit connected in series between the ground and the first point of the antenna; and a second variable impedance circuit connected to the feed connection in parallel with the first variable impedance circuit. - View Dependent Claims (21)
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22. (canceled)
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23. (canceled)
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24. (canceled)
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25. (canceled)
Specification