Communication devices, communication systems and methods of communicating
First Claim
1. A communication device comprising:
- a first antenna operable to receive wireless communication signals;
a second antenna having plural leads, the second antenna being operable to output wireless communication signals;
a connection including plural conductive lines having respective first ends and second ends, the connection being coupled with the leads of the second antenna at the first ends of the lines; and
a switch coupled with the second ends of the connection, the switch being operable to provide one of selective shorting and isolation of the leads.
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Accused Products
Abstract
The present invention provides communication devices, communication systems and methods of communicating. According to one embodiment of the invention, a communication device includes: a first antenna operable to receive wireless communication signals; a second antenna having plural leads, the second antenna being operable to output wireless communication signals; a connection including plural conductive lines having respective first ends and second ends, the connection being coupled with the leads of the second antenna at the first ends of the lines; and a switch -coupled with the second ends of the connection, the switch being operable to provide one of selective shorting and isolation of the leads. One method of communicating of the invention includes: forming a first antenna; forming a second antenna; receiving wireless interrogation signals using the first antenna; outputting wireless identification signals using the second antenna; opening a coupling intermediate plural leads of the second antenna during the receiving; selectively shorting the leads of the second antenna during the outputting; and providing a low load impedance of the second antenna during the receiving.
118 Citations
21 Claims
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1. A communication device comprising:
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a first antenna operable to receive wireless communication signals;
a second antenna having plural leads, the second antenna being operable to output wireless communication signals;
a connection including plural conductive lines having respective first ends and second ends, the connection being coupled with the leads of the second antenna at the first ends of the lines; and
a switch coupled with the second ends of the connection, the switch being operable to provide one of selective shorting and isolation of the leads. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A communication device comprising:
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a first antenna operable to receive wireless communication signals;
a second antenna having plural leads operable to output wireless communication signals, the second antenna being selectively configured between a first load impedance and a second load impedance lower than the first load impedance;
a switch electrically coupled with the second antenna, the switch being selectively operable to close to electrically short the leads and open to electrically insulate the leads; and
a transformer intermediate the switch and the second antenna, the transformer being configured to effect the second load impedance of the second antenna responsive to the switch being open. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21-63. -63. (canceled)
Specification