Frequency-scaled ultra-wide spectrum element

• US 10,333,230 B2
• Filed: 05/22/2018
• Issued: 06/25/2019
• Est. Priority Date: 06/16/2015
• Status: Active Grant

• Current Assignee: The Government Of The United States Of America, As Represented By The Secretary Of The Navy
• Original Assignee: Mitre Corporation
• Inventors: Elsallal, Wajih, Hood, Jamie, Locker, Al, Kindt, Rick W.
• Primary Examiner(s): Karacsony, Robert
• Application Number:
  US15/986,464
• Publication Number:
  US 20180269593A1
• Time in Patent Office: 399 Days
• CPC Class Codes: H01Q 13/085 Slot-line radiating ends
• CPC Class Codes: H01Q 21/062 using dipole aerials; H01Q21/067, H01Q21/068 take precedence
• CPC Class Codes: H01Q 21/064 using horn or slot aerials slotted waveguides arrays H01Q21/005
• CPC Class Codes: H01Q 21/24 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 Class Codes: H01Q 3/30 varying the relative phase between the radiating elements of an array H01Q3/2605, H01Q3/2658, H01Q3/2682, H01Q3/44 take precedence

Abstract

A radiating element for a phased array antenna that includes a base portion, a first member projecting from the base portion comprising a first stem and a first impedance matching portion, wherein the first impedance matching portion comprises at least one projecting portion projecting from a first side of the first impedance matching portion, and a second member projecting from the base portion and spaced apart from the first member, the second member comprising a second stem and a second impedance matching portion, wherein the second impedance matching portion comprises at least one other projecting portion projecting toward the first side of the first impedance matching portion.

Claims

1. A radiating element for a phased array antenna comprising:

a base portion;

a first member projecting from the base portion comprising a first stem and a first impedance matching portion, wherein the first stem supports the first impedance matching portion and the first impedance matching portion comprises at least one projecting portion projecting in a first direction from a first side of the first impedance matching portion; and

a second member projecting from the base portion and spaced apart from the first member, the second member comprising a second stem that is spaced apart from the first stem in the first direction and a second impedance matching portion, wherein the second stem supports the second impedance matching portion and the second impedance matching portion comprises at least one other projecting portion projecting toward the first side of the first impedance matching portion.

2. The radiating element of claim 1, wherein the first member further comprises a first capacitive coupling portion on a second side opposite the first side, the first capacitive coupling portion configured to capacitively couple to a first ground clustered pillar.

3. The radiating element of claim 1, wherein the first impedance matching portion and the second impedance matching portion are substantially symmetrical.

4. The radiating element of claim 1, wherein the first impedance matching portion comprises a first projecting portion at a distal end of the first member and a second projecting portion spaced between the first projecting portion and the first stem, wherein the first projecting portion projects farther than the second projecting portion.

5. The radiating element of claim 1, wherein the first member is electrically insulated from the second member.

6. The radiating element of claim 1, wherein the first member is conductively coupled to the base portion and the second member is conductively isolated from the base portion.

7. The radiating element of claim 1, wherein the first member and the second member are coplanar.

8. The radiating element of claim 1, wherein the first stem supports the first member in an upright position.

9. The radiating element of claim 1, wherein a base end of the second stem is positioned in a dielectric portion of the base portion.

10. The radiating element of claim 9, wherein the dielectric portion is a dielectric plug inserted into the base portion for affixing the first radiating element to the base portion.

11. The radiating element of claim 10, wherein the dielectric plug comprises a connector for connecting a signal line to the first radiating element.

12. The radiating element of claim 1, wherein the first and second members are each freestanding components.

13. The radiating element of claim 2, wherein the first capacitively coupled portion is configured to wrap around the first ground clustered pillar.

14. The radiating element of claim 1, wherein the first and second members are separated by an air gap.

15. The radiating element of claim 1, wherein the first side of the first impedance matching portion comprises a plurality of projecting portions and a plurality of valleys.

16. A phased array antenna comprising:

a base portion;

a first member projecting from the base portion comprising a first stem and a first impedance matching portion, wherein the first stem supports the first impedance matching portion and the first impedance matching portion comprises at least one projecting portion projecting in a first direction from a first side of the first impedance matching portion; and

a second member projecting from the base portion and spaced apart from the first member, the second member comprising a second stem that is spaced apart from the first stem in the first direction and a second impedance matching portion, wherein the second stem supports the second impedance matching portion and the second impedance matching portion comprises at least one other projecting portion projecting toward the first side of the first impedance matching portion.