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US 12,695,201 B1Granted
Waveguide-fed ultra wideband horn antenna array for e-band automotive radar application
AssigneeOculii Corp.
InventorJun Yao
Life of this patent
Estimating the term…
Abstract
An apparatus comprising a first waveguide portion, a second waveguide portion and an attachment. The first waveguide portion may comprise a first half of a waveguide input and a first layer of a two-layer waveguide board. The second waveguide portion may comprise a second half of the waveguide input and a second layer of the two-layer waveguide board. The attachment may be configured to connect the first waveguide portion to the second waveguide portion. The first half of the waveguide input may have a same height as the second half of the waveguide input. The two-layer waveguide board may be configured to implement a waveguide network for an antenna array. A horn antenna aperture for each antenna in the antenna array may be implemented on the first waveguide portion.
Claims19
An apparatus comprising:
- a first waveguide portion comprising a first half of a waveguide input, a first half of waveguide outputs, a first half of a splitter structure, and a first layer of a two-layer waveguide board;
- a second waveguide portion comprising a second half of said waveguide input, a second half of said waveguide outputs, a second half of said splitter structure, and a second layer of said two-layer waveguide board;
- and
- an attachment configured to connect said first waveguide portion to said second waveguide portion, wherein
- (i) said first half of said waveguide input and said first half of said splitter structure have a same height as said second half of said waveguide input and said second half of said splitter structure,
- (ii) said two-layer waveguide board is configured to implement a waveguide network for an antenna array,
- (iii) a horn antenna aperture for each antenna in said antenna array is implemented on said first waveguide portion,
- (iv) said first half of said waveguide input and said second half of said waveguide input are configured to provide an input to said waveguide network, and
- (v) said first half of said waveguide outputs and said second half of said waveguide outputs are configured to provide an output of said waveguide network that emits an electric field radiation pattern comprising (i) a symmetrical response in an elevation plane with a first gain that does not drop off until approximately −50 and +50 degrees, (ii) a wide and symmetrical response in an azimuth plane with a second gain that does not drop off until approximately −90 and +90 degrees, and (iii) an equal gain response at zero degrees in both said elevation plane and said azimuth plane.
6 more elements
An apparatus comprising:
- a first waveguide portion comprising a first half of a waveguide input, a first half of four waveguide outputs and a first layer of a two-layer waveguide board;
- a second waveguide portion comprising a second half of said waveguide input, a second half of said four waveguide outputs and a second layer of said two-layer waveguide board;
- and
- an attachment configured to connect said first waveguide portion to said second waveguide portion, wherein
- (i) said first half of said waveguide input has a same height as said second half of said waveguide input,
- (ii) said two-layer waveguide board is configured to implement a waveguide network that implements a 1 by 4 feed network configured to achieve 25 GHz bandwidth for an antenna array,
- (iii) a horn antenna aperture for each antenna in said antenna array is implemented on said first waveguide portion,
- (iv) said first half of said waveguide input and said second half of said waveguide input are configured to provide 18 an input to said waveguide network,
- (v) two of said four waveguide outputs on an outside of said 1 by 4 feed network provide an amplitude of a radio frequency signal that is 2.8 dB lower than said amplitude of said radio frequency signal of two of said four waveguide outputs on an inside of said 1 by 4 feed network, and
- (vi) a phrase of each of said four waveguide outputs is equal.
7 more elements
An apparatus comprising:
- a first waveguide portion comprising a first half of a waveguide input, a first half of 16 waveguide outputs and a first layer of a two-layer waveguide board;
- a second waveguide portion comprising a second half of said waveguide input, a second half of said 16 waveguide outputs and a second layer of said two-layer waveguide board;
- and
- an attachment configured to connect said first waveguide portion to said second waveguide portion, wherein
- (i) said first half of said waveguide input has a same height as said second half of said waveguide input,
- (ii) said two-layer waveguide board is configured to implement a waveguide network that implements a 2 by 8 feed network for an antenna array, and
- (iii) a horn antenna aperture for each antenna in said antenna array is implemented on said first waveguide portion,
- (iv) said first half of said waveguide input and said second half of said waveguide input are configured to provide an input to said waveguide network, and
- (v) said 2 by 8 feed network is configured to enable said antenna array to implement a long range radar with a narrow field of view configured to achieve 10 GHz bandwidth, a maximum gain of 19.1 dB and a −20 dB side lobe.
6 more elements
Dependencies are inferred from the claim text.