Substrate-loaded frequency-scaled ultra-wide spectrum element

Patent metadata

Field	Value
Publication number	US-11088465-B2
Application number	US-201816057672-A
Country	US
Kind code	B2
Filing date	Aug 7, 2018
Priority date	Jun 16, 2015
Publication date	Aug 10, 2021
Grant date	Aug 10, 2021

Abstract

A unit cell of for a phased array antenna includes a base plate, a first dielectric layer projecting from the base plate, and a first conductive layer disposed on a side of the first dielectric layer, the first conductive layer includes a ground pillar, a first ground member spaced apart from a first edge of the ground pillar, and a first signal member disposed between the ground pillar and the first ground member, wherein: the first signal member is electrically insulated from the ground pillar and the first ground member, and an edge of the first signal member is configured to capacitively couple to the first edge of the ground pillar.

First claim

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

1. A unit cell of for a phased array antenna comprising:
a base plate;
a first dielectric layer projecting from the base plate; and
a first conductive layer disposed on a side of the first dielectric layer, the first conductive layer comprising:
a ground pillar;
a first ground member spaced apart from a first edge of the ground pillar; and
a first signal member disposed between the ground pillar and the first ground member,

wherein:
the first signal member is electrically insulated from the ground pillar and the first ground member, and
an edge of the first signal member is configured to capacitively couple to the first edge of the ground pillar.

2. The unit cell of claim 1 , wherein the conductive layer further comprises a second ground member spaced apart from a second edge of the ground pillar, opposite the first edge, wherein an edge of the second ground member is configured to capacitively couple to the second edge of the ground pillar.

3. The unit cell of claim 1 , further comprising:
a second dielectric layer;
a second conductive layer disposed on a side of the second dielectric layer, the second conductive layer comprising:
a second signal member spaced apart from a third edge of the ground pillar, wherein the second signal member is electrically insulated from the base plate and the ground pillar, and an edge of the second signal member is configured to capacitively couple to the third edge of the ground pillar; and
a third ground member spaced apart from a fourth edge of the ground pillar, opposite the third edge, wherein an edge of the third ground member is configured to capacitively couple to the fourth edge of the ground pillar.

4. The unit cell of claim 1 , wherein the element is configured to receive RF signals in a frequency range between a first frequency and a second frequency that is higher than the first frequency and the first signal member projects from the base plate with a maximum height of one-half the wavelength of the second frequency.

5. The unit cell of claim 1 , wherein:
the ground pillar comprises a first plurality of projections that project from the first edge of the ground pillar; and
the first signal member comprises a second plurality of projections that project from the edge of the first signal member.

6. The unit cell of claim 1 , wherein the ground pillar and the first ground member are electrically connected to the base plate.

7. The unit cell of claim 1 , wherein a distal end of the first ground member and a distal end of the first signal member are substantially symmetrical about a plane disposed midway between the first ground member and the first signal member.

Assignees

• Mitre Corp
• Us Gov Sec Navy

Inventors

• Elsallal Wajih
• Hood Jamie
• Locker Al
• Kindt Rick W

Classifications

• H01Q5/25 Primary

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

• H01Q21/064

  using horn or slot aerials (slotted waveguides arrays H01Q21/005) · CPC title

• H01Q1/48

  Earthing means; Earth screens; Counterpoises · CPC title

• H01Q21/061 Primary

  Two dimensional planar arrays · CPC title

• H01Q21/24

  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