Wideband multi-function phased array antenna aperture

Patent metadata

Field	Value
Publication number	US-9716308-B2
Application number	US-201213617088-A
Country	US
Kind code	B2
Filing date	Sep 14, 2012
Priority date	Feb 13, 2012
Publication date	Jul 25, 2017
Grant date	Jul 25, 2017

Abstract

A wideband multi-function phased array antenna aperture includes a plurality of low and high frequency phased array apertures that are asymmetrically dispersed over a largest aperture. Each aperture of the plurality of low and high frequency phased array apertures includes a plurality of frequency scaled radiating elements. The antenna aperture consolidates many functions into a single wideband multi-function phased array antenna where the use of frequency scaled elements reduces the total number of elements needed, thereby reducing the size, weight, power, cost and radar cross section when compared to conventional wideband phased array architectures.

First claim

What is claimed as new and desired to be protected by Letters Patent of the United States is:

1. A wideband multi-function phased array antenna comprising a plurality of apertures comprising:
a first aperture having a largest area of the plurality of apertures and having a first frequency band;
a second aperture, comprising a first plurality of frequency scaled radiating elements and having a second frequency band, dispersed over a first corner of the first aperture;
a third aperture, comprising a second plurality of frequency scaled radiating elements and having a third frequency band, dispersed over a second corner of the first aperture, wherein the second corner does not overlap with the first corner;
a fourth aperture, comprising a third plurality of frequency scaled radiating elements and having a fourth frequency band, dispersed over the first aperture; and
wherein the second aperture, the third aperture, and the fourth aperture of the phased array antenna are configured to function independently of each other.

2. The wideband multi-function phased array antenna of claim 1 , wherein each aperture of the plurality of apertures has a square geometry.

3. The wideband multi-function phased array antenna aperture of claim 1 , wherein each aperture of the plurality of apertures has a rectangular geometry.

4. The wideband multi-function phased array antenna of claim 1 , wherein the plurality of apertures comprise at least one aperture having a square geometry and at least one aperture having a non-square rectangular geometry.

5. The wideband multi-function phased array antenna of claim 1 , wherein respective ratios of inter-element spacings between different apertures of the plurality of apertures are whole numbers.

6. The wideband multi-function phased array antenna of claim 1 , wherein respective ratios of inter-element spacings between different apertures of the plurality of phased array antenna apertures are not whole numbers.

7. A wideband multi-function phased array antenna aperture, comprising:
a core array dispersed over a first corner of the wideband multi-function phased array antenna aperture;
a first plurality of phased array apertures, configured to operate using a first frequency band, dispersed over the wideband multi-function phased array antenna aperture, wherein the first plurality of phased array apertures form respective layers around the core array;
a second plurality of phased array apertures, configured to operate using a second frequency band, dispersed over a second corner of the wideband multi-function phased array antenna aperture; and
a third plurality of phased array apertures, configured to operate using a third frequency band, dispersed over the wideband multi-function phased array antenna aperture, wherein each aperture of the first plurality of phased array apertures, the second plurality of phased array apertures, and the third plurality of phased array apertures comprise a plurality of frequency scaled radiating elements, and wherein the second plurality of phased array apertures and the third plurality of phased array apertures are asymmetrically dispersed with respect to a center of the wideband multi-function phased array antenna aperture.

8. The wideband multi-function phased array antenna aperture of claim 7 , wherein the first plurality of phased array apertures are positioned at a lower right corner of the wideband multi-function phased array antenna aperture.

9. The wideband multi-function phased array antenna aperture of claim 8 , wherein the second plurality of phased array apertures are positioned at an upper left former of the wideband multi-function phased array antenna aperture.

10. The wideband multi-function phased array antenna aperture of claim 8 , wherein the third plurality of phased array apertures are positioned at an upper right former of the wideband multi-function phased array antenna aperture.

11. The wideband multi-function phased array antenna aperture of claim 7 , wherein the first plurality of phased array apertures comprise X-band, Ku-band, K-band, and TV(Ku)-band array apertures.

12. The wideband multi-function phased array antenna aperture of claim 7 , wherein the second plurality of phased array apertures comprise L-band, S-band, and TV(C)-band array apertures.

13. The wideband multi-function phased array antenna of claim 1 , wherein the second aperture and the third aperture are dispersed over the first aperture such that a bandwidth of the frequency scaled radiating elements is reduced.

14. The wideband multi-function phased array antenna of claim 1 , wherein the second plurality of frequency scaled radiating elements of the second aperture have a first bandwidth, and wherein the third plurality of frequency scaled radiating elements of the third aperture have a second bandwidth.

15. The wideband multi-function phased array antenna of claim 1 , wherein the second aperture has a first beamwidth, wherein the third aperture has a second beamwidth, and wherein the second beamwidth is not symmetrical with respect to the first beamwidth.

16. A wideband multi-function phased array antenna comprising a plurality of apertures comprising:
a first aperture having a first frequency band and having a largest area of the plurality of apertures;
a second aperture, comprising a first-plurality of frequency scaled radiating elements and having a second frequency band, wherein the second aperture is dispersed over a first corner of the first aperture;
a third aperture, comprising a second plurality of frequency scaled radiating elements and having a third frequency band, wherein the third aperture is dispersed over a second corner of the first aperture, wherein the second aperture is not positioned around the third aperture, and wherein the third aperture is not positioned around the second aperture;
the second aperture and the third aperture of the phased array antenna are configured to function independently of each other, wherein a height-to-width ratio of the third aperture is different than a height-to-width ratio of the second aperture; and
a fourth aperture, comprising a third plurality of frequency scaled radiating elements and having a fourth frequency band, dispersed over the first aperture.

17. The wideband multi-function phased array antenna of claim 16 , wherein the fourth aperture is positioned around the third aperture.

18. The wideband multi-function phased array antenna of claim 17 , further comprising:
a fifth aperture, comprising a fourth plurality of frequency scaled radiating elements and having a fifth frequency band, wherein the fifth aperture is dispersed over a third corner of the first aperture.

19. The wideband multi-function phased array antenna of claim 18 , further comprising:
a sixth aperture, comprising a fifth plurality of frequency scaled radiating elements and having a sixth frequency band, wherein the sixth aperture is dispersed over a fourth corner of the first aperture.

20. The wideband multi-function phased array antenna of claim 17 , further comprising:
a fifth aperture, comprising a fourth plurality of frequency scaled radiating elements and having a fifth frequency band, wherein the fifth aperture is positioned around the second aperture.

Assignees

• Mital Rashmi
• Rao Jaganmohan B
• Patel Dharmesh P
• Tavik Gregory C
• Us Navy

Inventors

• Mital Rashmi
• Rao Jaganmohan B
• Patel Dharmesh P
• Tavik Gregory C

Classifications

• H01Q21/061

  Two dimensional planar arrays · CPC title

• H01Q1/34 Primary

  Adaptation for use in or on ships, submarines, buoys or torpedoes (for subaqueous use H01Q1/04) · CPC title

• H01Q5/42

  using two or more imbricated arrays (H01Q5/49 takes precedence) · CPC title