Dual autodiplexing antenna
First Claim
1. A portable two-way communication device, comprising:
- a. a first antenna configured for operation at least in a first bandwidth disposed at a first end of the portable two-way communication device;
b. a second antenna configured for operation at least in a second bandwidth disposed at a distal end of the portable two-way communication device; and
c. at least one of a receiver and a transmitter coupled to both the first antenna and the second antenna;
d. two passive transmission line matching circuits, with a first passive transmission line matching circuit coupling the at least one of the receiver and the transmitter to the first antenna and a second passive transmission line matching circuit coupling the at least one of the receiver and the transmitter to the second antenna;
wherein each of the first antenna and the second antenna has associated therewith at least a nominal impedance and a loaded impedance;
wherein when one of the first antenna and the second antenna is loaded, the first passive transmission line matching circuit and the second passive transmission line matching circuit are configured to become mismatched, thereby causing power flowing from the at least one of the receiver and the transmitter is passively directed to a lesser loaded antenna of the first antenna and the second antenna.
3 Assignments
0 Petitions
Accused Products
Abstract
A dual autodiplexing antenna (300) redirects power flow (303) from an unloaded antenna to a loaded antenna, thereby improving communication performance under loaded conditions. The dual autodiplexing antenna (300) includes a first antenna (101) disposed at a first end (103) of a portable two-way communication device (100). A second antenna (102) is disposed at the distal end (104) of the portable two-way communication device (100). The first antenna (101) and second antenna (102) are coupled to a transceiver (107) by a first transmission line matching circuit (201) and a second transmission line matching circuit (202), respectively. In one embodiment, the first antenna (101) is configured to primarily operate in a first bandwidth, while the second antenna (102) is configured to primarily operate in a second bandwidth. When one of the first antenna (101) or second antenna (102) is loaded, power flow (303) is redirected to the lesser loaded antenna.
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Citations
20 Claims
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1. A portable two-way communication device, comprising:
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a. a first antenna configured for operation at least in a first bandwidth disposed at a first end of the portable two-way communication device; b. a second antenna configured for operation at least in a second bandwidth disposed at a distal end of the portable two-way communication device; and c. at least one of a receiver and a transmitter coupled to both the first antenna and the second antenna; d. two passive transmission line matching circuits, with a first passive transmission line matching circuit coupling the at least one of the receiver and the transmitter to the first antenna and a second passive transmission line matching circuit coupling the at least one of the receiver and the transmitter to the second antenna; wherein each of the first antenna and the second antenna has associated therewith at least a nominal impedance and a loaded impedance; wherein when one of the first antenna and the second antenna is loaded, the first passive transmission line matching circuit and the second passive transmission line matching circuit are configured to become mismatched, thereby causing power flowing from the at least one of the receiver and the transmitter is passively directed to a lesser loaded antenna of the first antenna and the second antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A portable two-way communication device, comprising:
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a. a first antenna configured for operation at least in a first bandwidth disposed at a first end of the portable two-way communication device; b. a second antenna configured for operation at least in a second bandwidth disposed at a distal end of the portable two-way communication device; and c. at least one of a receiver and a transmitter coupled to both the first antenna and the second antenna; d. two passive transmission line matching circuits, with a first passive transmission line matching circuit coupling the at least one of the receiver and the transmitter to the first antenna and a second passive transmission line matching circuit coupling the at least one of the receiver and the transmitter to the second antenna; wherein each of the first antenna and the second antenna has associated therewith at least a nominal impedance and a loaded impedance; wherein when one of the first antenna and the second antenna is loaded, the first passive transmission line matching circuit and the second passive transmission line matching circuit are configured to become mismatched, thereby causing power flowing from the at least one of the receiver and the transmitter is passively directed without a switch to a lesser loaded antenna of the first antenna and the second antenna. - View Dependent Claims (18, 19, 20)
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Specification