MULTI-FEED ANTENNA APPARATUS AND METHODS
First Claim
1. A multi-feed antenna apparatus, comprising:
- a first antenna element operable in a first frequency region and comprising;
a first radiator; and
a first feed portion, the first feed portion configured to be coupled to a first feed port;
a second antenna element operable in at least a second frequency region and a third frequency region, the second antenna element comprising;
a second radiator;
a second feed portion configured to be coupled to a second feed port; and
a third feed portion configured to be coupled to a third feed port;
wherein;
the second frequency region comprises a first carrier frequency and the third frequency region comprises a second carrier frequency; and
the second and the third feed portions cooperate to;
(i) enable inter-carrier aggregation of the first carrier and the second carrier into a single band, and (ii) to obviate diplexer matching specific to said single band.
2 Assignments
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Accused Products
Abstract
A space efficient multi-feed antenna apparatus, and methods for use in a radio frequency communications device. In one embodiment, the antenna assembly comprises three (3) separate radiator structures disposed on a common antenna carrier. Each of the three antenna radiators is connected to separate feed ports of a radio frequency front end. In one variant, the first and the third radiators comprise quarter-wavelength planar inverted-L antennas (PILA), while the second radiator comprises a half-wavelength grounded loop-type antenna disposed in between the first and the third radiators. The PILA radiators are characterized by radiation patterns having maximum radiation axes that are substantially perpendicular to the antenna plane. The loop radiator is characterized by radiation pattern having axis of maximum radiation that is parallel to the antenna plane. The above configuration of radiating patterns advantageously isolates the first radiator structure from the third radiator structure in at least one frequency band.
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Citations
20 Claims
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1. A multi-feed antenna apparatus, comprising:
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a first antenna element operable in a first frequency region and comprising; a first radiator; and a first feed portion, the first feed portion configured to be coupled to a first feed port; a second antenna element operable in at least a second frequency region and a third frequency region, the second antenna element comprising; a second radiator; a second feed portion configured to be coupled to a second feed port; and a third feed portion configured to be coupled to a third feed port; wherein; the second frequency region comprises a first carrier frequency and the third frequency region comprises a second carrier frequency; and the second and the third feed portions cooperate to;
(i) enable inter-carrier aggregation of the first carrier and the second carrier into a single band, and (ii) to obviate diplexer matching specific to said single band.
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2. A triple-feed antenna apparatus, comprising:
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a first antenna element operable in a lower frequency band and comprising a first feed portion configured to be coupled to a first feed port; a second antenna element operable in a second frequency band and comprising a second feed portion configured to be coupled to a second feed port; and a third antenna element operable in an upper frequency band and comprising a third feed portion configured to be coupled to a third feed port; wherein; the first and third antenna elements are each configured to form a radiation pattern disposed primarily in a first orientation; and the second antenna element is configured to form a radiation pattern disposed primarily in a second orientation that is substantially orthogonal to the first. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A radio frequency communications device, comprising:
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an electronics assembly comprising a ground plane and one or more feed ports; and a multiband antenna apparatus, the antenna apparatus comprising; a first antenna structure comprising a first radiating element and a first feed portion coupled to a first feed port; a second antenna structure comprising a second radiating element and a second feed portion coupled to a second feed port; a third antenna structure comprising an third radiating element and a third feed portion coupled to a third feed port; and wherein; the second antenna structure and second feed port are disposed substantially between said first and third antenna structures. - View Dependent Claims (14, 15, 16)
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17. A method of tuning a multi-feed antenna having first, second and third radiating elements and associated first, second, and third feed ports and matching circuits, the method comprising:
tuning a reactance of at least one of the matching circuits so as to create a dual resonance response in the radiating element associated therewith. - View Dependent Claims (18, 19)
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20. A method of radiator isolation for use in a multi-feed antenna apparatus of a radio frequency device, the antenna comprising first, second, and third antenna radiating elements, and at least first, second, and third feed portions, the method comprising:
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electrically coupling the first feed point to the first radiating element, said coupling configured to effect a first radiation pattern having maximum sensitivity along a first axis; electrically coupling the second feed point to the second radiating element, said electric coupling configured to effect a second radiation pattern having maximum sensitivity along a second axis; and electrically coupling the third feed portion to the third radiating element, said coupling configured to effect a third radiation pattern having maximum sensitivity along said first axis; wherein; said second axis is configured orthogonal to said first axis; and said configurations cooperate to effect isolation of the first radiating element from the third radiating element.
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Specification