FLEXIBLE POLYMER ANTENNA WITH MULTIPLE GROUND RESONATORS

• US 20170133767A1
• Filed: 11/14/2016
• Published: 05/11/2017
• Est. Priority Date: 11/11/2015
• Status: Active Grant

• Current Assignee: Taoglas Group Holding Limited
• Original Assignee: Taoglas Group Holding Limited
• Inventors: Dorsey, Jason Philip
• Granted Patent: US 10,103,451 B2
• Time in Patent Office: Days
• CPC Class Codes: H01Q 1/241 used in mobile communications, e.g. GSM H01Q1/247, H01Q1/248 take precedence
• CPC Class Codes: H01Q 1/242 specially adapted for hand-held use
• CPC Class Codes: H01Q 1/36 Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewithH01Q1/08, H01Q1/14 take precedence
• CPC Class Codes: H01Q 1/38 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 Class Codes: H01Q 1/48 Earthing means; Earth screens; Counterpoises
• CPC Class Codes: H01Q 21/20 the units being spaced along or adjacent to a curvilinear path slotted waveguide arrays H01Q21/005; circularly or helically slotted waveguides H01Q21/0062
• CPC Class Codes: H01Q 5/30 Arrangements for providing operation on different wavebands
• CPC Class Codes: H01Q 5/371 Branching current paths

Abstract

The disclosure concerns an antenna assembly having a substrate with an antenna radiating element and a ground conductor disposed on the substrate, the ground conductor further characterized by a plurality of ground resonators, wherein a length associated with each of the ground resonators increases as the ground resonators are distanced from the antenna radiating element. Additionally, a coaxial cable is routed around the antenna assembly for configuring the coaxial cable as an additional ground resonator associated with the antenna assembly. The resulting antenna provides wide band performance between 700 MHz and 2700 MHz with improved efficiency compared with conventional antennas.

Claims

1. An antenna assembly, comprising:

a antenna radiating antenna radiating element; and

a ground conductor;

the antenna radiating antenna radiating element being positioned adjacent to the ground conductor;

characterized in that the ground conductor comprises;

a plurality of sub-elements, each sub-element being configured to produce a distinct resonance.

2. The antenna assembly of claim 1, wherein each of the antenna radiating element and the plurality of sub-elements are disposed on a flexible substrate.

3. The antenna assembly of claim 2, wherein the plurality of sub-elements comprises:

a first ground resonator, a second ground resonator, and a third ground resonator.

4. The antenna assembly of claim 3, wherein first ground resonator comprises a first length associated therewith.

5. The antenna assembly of claim 4, wherein the second ground resonator comprises a second length associated therewith, and wherein the second length is greater than the first length.

6. The antenna assembly of claim 5, wherein the third ground resonator comprises a third length associated therewith, and wherein the third length is greater than each of the first and second lengths.

7. The antenna assembly of claims 6, further comprising a coaxial cable coupled to a feed of the antenna radiating element and further coupled to the ground conductor;

the coaxial cable being positioned around a periphery of the antenna assembly.

8. The antenna assembly of claim 7, wherein the coaxial cable is configured to function as a fourth ground resonator.

9. The antenna assembly of claim 2, wherein the antenna radiating element is positioned at a corner of the flexible substrate.

10. The antenna assembly of claim 1, wherein the ground conductor is configured to surround two sides of the antenna radiating element.

11. The antenna assembly of claim 2, wherein the ground conductor extends along a first edge of the flexible substrate.

12. The antenna assembly of claim 11, wherein each of the first through third ground resonators extends from the first edge of the flexible substrate.

13. The antenna assembly of claim 12, wherein the first ground resonator comprises a first body portion extending perpendicularly from the first edge, and a first terminal portion extending perpendicularly from the first body portion.

14. The antenna assembly of claim 13, wherein the second ground resonator comprises a second horizontal body portion extending perpendicularly from the first edge, a second vertical body portion extending perpendicularly from the second horizontal body portion, and a second terminal portion extending perpendicularly from the second vertical body portion.

15. The antenna assembly of claim 14, wherein the third ground resonator comprises a cleave portion extending from the first edge, a third horizontal body portion extending from the cleave portion, and a third vertical body portion extending perpendicularly from the third horizontal body portion.