Antenna having at least one dipole or an antenna element arrangement which is similar to a dipole

• US 6,933,906 B2
• Filed: 05/20/2003
• Issued: 08/23/2005
• Est. Priority Date: 04/10/2003
• Status: Expired due to Term

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Kathrein-Werke KG. (Kathrein SE)
• Inventors: Scheyer, Andreas, Stolle, Manfred
• Primary Examiner(s): Lee, Wilson
• Assistant Examiner(s): A, MINH D
• Application Number:
  US10/441,265
• Publication Number:
  US 20040201537A1
• Time in Patent Office: 826 Days
• Field of Search: 343/700.MS, 343/846, 343/850, 343/770, 343/808, 343/813, 343/872, 343/893, 343/911.R, 343/797
• US Class Current: 343/797
• CPC Class Codes: H01Q 1/246 specially adapted for base stations
• CPC Class Codes: H01Q 19/10 using reflecting surfaces
• CPC Class Codes: H01Q 21/08 the units being spaced along or adjacent to a rectilinear path waveguide fed H01Q21/0037
• CPC Class Codes: H01Q 21/26 Turnstile or like antennas comprising arrangements of three or more elongated elements disposed radially and symmetrically in a horizontal plane about a common centre

Abstract

An improved antenna having at least one dipole or an antenna element arrangement which is similar to a dipole is distinguished in that the antenna element arrangement is connected capacitively and/or electrically conductively without touching to the reflector or to a reflector or a substrate which is non-conductive at least in the area in which the antenna element arrangement is attached or mounted.

Claims

1. An antenna comprising:

a reflector that is at least partially conductive,

an electrically conductive balancing device including a base section,

at least one dipole mounted on said conductive balancing device, and

a non-electrically-conductive coupling structure that fastens and couples said conductive balancing device base section to said reflector without establishing an electrical connection therebetween.

2. The antenna of claim 1, wherein the coupling structure capacitively couples said balancing device base section to said reflector.

3. The antenna of claim 1 wherein the structure comprises a non-conductive socket fixed to the reflector.

4. The antenna of claim 1 if wherein the structure includes a recess defined within the reflector, said base section engaging and passing at least partially through the recess.

5. The antenna of claim 1 wherein said structure comprises an electrically non-conductive intermediate layer that electrically isolates the reflector from the balancing device, the dipole and the coupling structure.

6. The antenna of claim 1 wherein the coupling structure comprises a non-conductive coating disposed on said base section.

7. The antenna of claim 6 wherein the coating comprises a dielectric.

8. The antenna of claim 1 wherein the reflector provides a surface to which said base section is attached, and the structure comprises an electrically non-conductive surface layer disposed on at least the portion of said reflector surface to which said base section is attached.

9. The antenna of claim 1 wherein the balancing device comprises a non-conductive material coated with an electrically conductive layer, said electrically conductive layer being absent within an area used to attach said balancing device to said reflector, said reflector being electrically conductive.

10. The antenna of claim 1 wherein the reflector defines a mounting and support area for mounting and supporting said balancing device base section, said reflector mounting and support area being non-conductive.

11. The antenna of claim 1 wherein the reflector comprises a board structure having a rearward face facing away from said dipole, and said antenna further includes a matching structure disposed at least in part on said rearward face.

12. The antenna of claim 1 wherein said base section is rotatably insertable into said reflector so as to mechanically fix said base section to said reflector.

13. An antenna comprising:

a reflector,

an electrically conductive balancing device including a base section,

at least one dipole mounted on said conductive balancing device, and

a non-electrically-conductive coupling structure that couples said conductive balancing device base section to said reflector without establishing an electrical connection therebetween, said coupling structure at least in part comprising a recess defined within said reflector, said base section engaging and anchoring within said recess.