Low profile full wavelength meandering antenna
AssigneeResearch In Motion Limited
InventorsYihong Qi, Perry Jarmuszewski, Ying Man
Life of this patent
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Abstract
A low profile antenna has a meander length based on the full electrical wavelength of the signal being transmitted or received. The antenna can have either an open-loop structure or a closed-loop structure with a matching network. The low profile enables the antenna to be used in a card for a device such as a personal computer, personal digital assistant, wireless telephone and so on with minimal risk of the antenna breaking off, as compared with a prior art antenna having a higher height and thus more likelihood of being broken from its card.
Claims23
An antenna, comprising:
- a first portion having a meandering path and two ends, and
- second and third portions, each having a straight path and connected to respective ends of the first portion.
An open-loop antenna, comprising:
- first, second, third, fourth and fifth portions connected serially,
- the first, third and fifth portions having meandering paths, and
- the fifth portion being coupled to a current source or transceiver.
A closed-loop antenna, comprising:
- a matching network that is coupled to a current source or transceiver, and
- first, second, third, fourth and fifth portions connected serially,
- the first, third and fifth portions having meandering paths, and
- the first and fifth portions connected to the matching network.
Dependencies are inferred from the claim text.