Antenna array having ultra-wide band and high polarization purity

Patent metadata

Field	Value
Publication number	US-10879625-B2
Application number	US-201816481847-A
Country	US
Kind code	B2
Filing date	Dec 6, 2018
Priority date	Dec 15, 2017
Publication date	Dec 29, 2020
Grant date	Dec 29, 2020

Abstract

An antenna array having wide frequency band, broad scanning volume and high polarization purity. The antenna array includes a ground plane (2), at least two antenna elements (1) located opposite to each other on the ground plane (2), at least one protrusion (4) located between the at least two antenna elements (1) and extending outward from the plane (2).

First claim

What is claimed is:

1. An antenna array comprising:
a ground plane;
at least two antenna elements located opposite to each other on the ground plane; and
at least one protrusion located between the at least two antenna elements and extending outward from the ground plane
wherein, the at least one protrusion interacts with currents excited along a longitudinal axis of the at least two antenna elements and increases onset frequencies of parallel plate and cavity eigenmodes to provide a polarization purity in a wide frequency band and scanning volume.

2. The antenna array according to claim 1 , wherein, the ground plane is made of an electrically conducting material.

3. The antenna array according to claim 1 , wherein, the at least one protrusion has a structure extending parallel to the at least two antenna elements.

4. The antenna array according to claim 1 , wherein, the at least one protrusion is in form of a plate.

5. The antenna array according to claim 1 , wherein, the at least one protrusion is in form of a rectangular prism.

6. The antenna array according to claim 1 , wherein, the at least one protrusion is in form of a rounded corner rectangular prism.

7. The antenna array according to claim 1 , wherein, the at least one protrusion is in form of a trapezoid.

8. The antenna array according to claim 1 , wherein, the at least one protrusion is in form of an elliptic cone.

9. The antenna array according to claim 1 , wherein, the at least one protrusion is in form of a frustum of a cone.

10. The antenna array according to claim 1 , wherein, the at least one protrusion is structurally integrated with the ground plane.

11. The antenna array according to claim 1 , wherein, the at least one protrusion is a separately manufactured element configured to be connected to the ground plane.

12. The antenna array according to claim 1 , further comprising at least an absorber layer located on the ground plane.

Assignees

• Aselsan Elektronik Sanayi Ve Ticaret As

Inventors

• Kalfa Mert
• Halavut Erhan
• Hilye Canbey Hilal

Classifications

• H01Q21/067 Primary

  using endfire radiating aerial units transverse to the plane of the array · CPC title

• H01Q5/25

  Ultra-wideband [UWB] systems, e.g. multiple resonance systems; Pulse systems · CPC title

• H01Q1/38

  formed by a conductive layer on an insulating support {(patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface  H01Q15/142)} · CPC title

• H01Q17/00

  Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems · CPC title

• H01Q21/24 Primary

  Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction {(circularly polarised patch antennas H01Q9/0428; circularly polarised horns H01Q13/0241; cross-polarised horns H01Q13/0258; polarisation converters H01Q15/242; cross-polarised rear feeds H01Q19/136; crossed polarisation dual antenna H01Q25/001)} · CPC title