Planar Surface Features for Achieving Antenna Coverage
US-2024162621-A1 · May 16, 2024 · US
Open waveguide beamforming antenna for radio frequency identification reader
US9509060B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9509060-B2 |
| Application number | US-201414462762-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 19, 2014 |
| Priority date | Aug 19, 2014 |
| Publication date | Nov 29, 2016 |
| Grant date | Nov 29, 2016 |
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Abstract
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An open waveguide antenna for a radio frequency identification reader includes a conductive annular waveguide concentric about an axis and configured for operation within an operating frequency band. A radiating slot is formed in at least one wall of the waveguide is also concentric about the axis. An odd-multiple of ports are electrically coupled to the annular waveguide, where the ports are equally spaced around the waveguide at a spacing between adjacent ports of one-half of a guided wavelength at a center frequency of the operating band. A second waveguide, smaller than the first, can also be incorporated. The second waveguide can have a different slot arrangement and fewer ports. The rectangular waveguides can operate in a non-transverse electromagnetic mode, and the ports can be individually driven to beamform the radiated signal of the antenna.
First claim
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What is claimed is: 1. An open waveguide antenna apparatus for a radio frequency identification reader, the antenna apparatus comprising: a conductive first annular waveguide concentric about an axis and configured for operation within an operating frequency band, featuring a guided wavelength at a center frequency of the operating frequency band; a first radiating slot formed in at least one wall of the first annular waveguide, the first radiating slot being substantially annul…
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Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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- What does patent US9509060B2 cover?
- An open waveguide antenna for a radio frequency identification reader includes a conductive annular waveguide concentric about an axis and configured for operation within an operating frequency band. A radiating slot is formed in at least one wall of the waveguide is also concentric about the axis. An odd-multiple of ports are electrically coupled to the annular waveguide, where the ports are e…
- Who is the assignee on this patent?
- Symbol Technologies Llc
- What technology area does this patent fall under?
- Primary CPC classification H01Q21/064. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 29 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).