Distributed loop antenna with multiple subloops
First Claim
1. An antenna, comprising:
- a dielectric carrier having a longitudinal axis; and
a loop antenna resonating element that extends around the longitudinal axis and surrounds at least part of the dielectric carrier, wherein the loop antenna resonating element includes at least first and second parallel subloops, wherein the first subloop includes metal traces on the dielectric carrier, the metal traces are configured to form a plurality of parallel openings, metal segment structures are formed between the parallel openings, and the metal segment structures collectively produce an inductance in the first subloop.
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Accused Products
Abstract
An electronic device may be provided with antenna structures. The antenna structures may be formed using a dielectric carrier structure. The antenna structures may have first and second loop antenna resonating elements. The first loop antenna resonating element may indirectly feed the second loop antenna resonating element. The second loop antenna resonating element may be a distributed loop element formed from multiple antenna resonating element subloops. The second loop antenna resonating element may be formed from a strip of metal with a width that loops around the dielectric carrier. An opening in the metal may separate first and second subloop antenna resonating elements from each other in the second loop antenna resonating element. Openings in the metal may form metal segments that collectively form an inductance for the first subloop. Antenna currents may flow through metal traces on the carrier and portions of an electronic device housing wall.
32 Citations
21 Claims
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1. An antenna, comprising:
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a dielectric carrier having a longitudinal axis; and a loop antenna resonating element that extends around the longitudinal axis and surrounds at least part of the dielectric carrier, wherein the loop antenna resonating element includes at least first and second parallel subloops, wherein the first subloop includes metal traces on the dielectric carrier, the metal traces are configured to form a plurality of parallel openings, metal segment structures are formed between the parallel openings, and the metal segment structures collectively produce an inductance in the first subloop. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An antenna, comprising:
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a dielectric carrier having a longitudinal axis; and a loop antenna resonating element that extends around the longitudinal axis and surrounds at least part of the dielectric carrier, wherein the loop antenna resonating element includes at least first and second parallel subloops, wherein the antenna loop resonating element comprises metal traces on the dielectric carrier and wherein an opening in the metal traces separates at least part of the first subloop from at least part of the second subloop. - View Dependent Claims (10, 11, 12)
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13. A distributed loop antenna, comprising:
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an antenna feed; and an antenna resonating element formed from first and second antenna resonating element loops that run parallel to each other around an axis, wherein the antenna resonating element includes metal traces on a dielectric carrier and includes portions of a metal electronic device housing wall. - View Dependent Claims (14, 15, 16, 17, 18)
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19. Apparatus, comprising:
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an electronic device housing having an edge; an elongated dielectric carrier that extends along a longitudinal axis parallel to the edge; and metal structures on the elongated dielectric carrier that form a distributed loop antenna having a loop antenna resonating element that has a width and that extends around the longitudinal axis, wherein the loop antenna resonating element includes first and second parallel subloops, wherein the metal structures include metal traces on the dielectric carrier and wherein the metal traces include a slot that separates at least part of the first subloop from at least part of the second subloop. - View Dependent Claims (20, 21)
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Specification