Diversity antenna structure having closely-positioned antennas
First Claim
1. A diversity antenna structure for a radio having radio circuitry operative in a radio communication system, said diversity antenna structure comprising:
- a first antenna formed of a first conductive portion and a second conductive portion wherein the second conductive portion of said first antenna forms a first ground plane portion; and
a second antenna formed of a first conductive portion and a second conductive portion wherein the second conductive portion of said second antenna forms a second ground plane portion and wherein the second ground plane portion formed of the second conductive portion of the second antenna is maintained in isolation from the first ground plane portion formed of the second conductive portion of the first antenna so as to cause radio frequency isolation when a difference between operating frequencies of the first antenna and the second antenna is at least zero.
5 Assignments
0 Petitions
Accused Products
Abstract
A diversity antenna structure and a diversity transceiver incorporating the same. Each antenna of the diversity antenna structure is formed of a first portion and a second portion. Second portions of each antenna are coupled to an electrical ground plane and form thereby ground plane portions of the respective antennas. Such second antenna portions are maintained in physical isolation from one another thereby, when receiving high frequency signals, to be maintained in apparent electrical isolation from one another. Because such ground plane portions are maintained in the apparent electrical isolation from one another, antennas of the diversity antenna structure may be positioned in close proximity to one another without causing coupling between the separate antennas of the diversity antenna structure.
120 Citations
19 Claims
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1. A diversity antenna structure for a radio having radio circuitry operative in a radio communication system, said diversity antenna structure comprising:
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a first antenna formed of a first conductive portion and a second conductive portion wherein the second conductive portion of said first antenna forms a first ground plane portion; and a second antenna formed of a first conductive portion and a second conductive portion wherein the second conductive portion of said second antenna forms a second ground plane portion and wherein the second ground plane portion formed of the second conductive portion of the second antenna is maintained in isolation from the first ground plane portion formed of the second conductive portion of the first antenna so as to cause radio frequency isolation when a difference between operating frequencies of the first antenna and the second antenna is at least zero. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A diversity antenna structure for a radio having radio circuitry operative in a radio communication system, said diversity antenna structure comprising:
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a first antenna formed of a first conductive portion and a second conductive portion wherein the second conductive portion of said first antenna forms a first ground plane portion; and a second antenna formed of a first conductive portion and a second conductive portion wherein the second conductive portion of said second antenna forms a second ground plane portion and wherein the second ground plane portion formed of the second conductive portion of the second antenna is maintained in close physical proximity to as well as in isolation from the first ground plane portion formed of the second conductive portion of the first antenna so as to cause radio frequency isolation when a difference between operating frequencies of the first antenna and the second antenna is at least zero; wherein the second conductive portion of the first antenna is positioned to extend in a first planar direction; and wherein said second conductive portion of the second antenna is positioned to extend in a planar direction substantially parallel to the first planar direction in which the second conductive portion of the first antenna is positioned to extend. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. In a radio receiver having receiver circuitry operative in a radio communication system, a combination with the receiver circuitry of a diversity antenna structure, said diversity antenna structure comprising:
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a first antenna formed of a first conductive portion and a second conductive portion wherein the second conductive portion of said first antenna forms a first ground plane portion; and a second antenna formed of a first conductive portion and a second conductive portion wherein the second conductive portion of said second antenna forms a second ground plane portion and wherein the second ground plane portion formed of the second conductive portion of the second antenna is maintained in isolation from the first ground plane portion formed of the second conductive portion of the first antenna so as to cause radio frequency isolation when the first antenna and the second antenna operate at same or different frequencies.
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19. In a radio transceiver having transceiver circuitry operative in a radio communication system, a combination with the transceiver circuitry of a diversity antenna structure, said diversity antenna structure comprising:
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a first antenna formed of a first conductive portion and a second conductive portion wherein the second conductive portion of said first antenna forms a first ground plane portion; and a second antenna formed of a first conductive portion and a second conductive portion wherein the second conductive portion of said second antenna forms a second ground plane portion and wherein the second ground plane portion formed of the second conductive portion of the second antenna is maintained in isolation from the first ground plane portion formed of the second conductive portion of the first antenna so as to cause radio frequency isolation when the first antenna and the second antenna operate at same or different frequencies.
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Specification