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US 10,873,132 B2Granted
Antenna modification to reduce harmonic activation
AssigneeNXP USA, Inc.
InventorAndrew Pienkowski
Life of this patent
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Abstract
An arrangement for modifying a printed circuit antenna of the type used in mobile communication devices includes introducing one or more discontinuities into a printed circuit pattern of the antenna so that it is not activated at undesired frequencies. Examples of discontinuities include localized narrowing the printed circuit strip, localized widening of the printed circuit strip and localized changing of the shape of the printed circuit strip.
Claims13
An antenna, comprising:
- the antenna formed as a printed circuit pattern having a predetermined loop pattern for radiating within an intended frequency band;
- and
- a portion of the predetermined loop pattern having a discontinuity,
- wherein a shape of the discontinuity comprises a plurality of corners having angular bends to form the shape in the antenna in addition to the predetermined loop pattern, the shape of the discontinuity determined to block spurious emissions from radiating from the antenna at an unwanted frequency outside of the intended frequency band at the portion of the predetermined pattern having the discontinuity.
1 more element
A device, comprising:
- a first antenna configured to radiate at a first frequency;
- and
- a second antenna, formed as a printed circuit pattern having a predetermined loop pattern, and configured to radiate at a second frequency, a portion of the predetermined loop pattern determined to radiate at an unwanted frequency different from the second frequency, the portion having a discontinuity determined to block the portion of the second antenna from radiating at the unwanted frequency, the discontinuity comprising a plurality of corners in the printed circuit pattern having angular bends to form a shape in addition to the predetermined loop pattern of the second antenna,
- wherein the shape of the discontinuity is determined based on a determination that the second antenna radiates at a harmonic of the first frequency.
1 more element
Dependencies are inferred from the claim text.