Coverage antenna apparatus with selectable horizontal and vertical polarization elements

• US 8,704,720 B2
• Filed: 10/24/2011
• Issued: 04/22/2014
• Est. Priority Date: 06/24/2005
• Status: Active Grant

• Current Assignee: Ruckus IP Holdings LLC
• Original Assignee: Ruckus Wireless, Inc. (CommScope Holding Company, Inc.)
• Inventors: Kish, William, Shtrom, Victor
• Primary Examiner(s): Nguyen, Hoang V
• Application Number:
  US13/280,278
• Publication Number:
  US 20120098730A1
• Time in Patent Office: 911 Days
• Field of Search: 343/770, 343/771, 343/725, 343/727, 343/893, 343/767, 343/833, 343/834
• US Class Current: 343/770
• CPC Class Codes: H01Q 13/10 Resonant slot antennas
• CPC Class Codes: H01Q 21/205 providing an omnidirectional coverage turnstile aerials H01Q21/26
• CPC Class Codes: H01Q 21/245 provided with means for varying the polarisation polarising devices H01Q15/24; tracking by comparing linear polarisation compounds G01S3/146; reducing depolarisation effects H04B7/00; polarisation diversity H04B7/10
• CPC Class Codes: H01Q 3/242 Circumferential scanning
• CPC Class Codes: H01Q 9/16 with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole H01Q9/44 takes precedence

Abstract

An antenna apparatus comprises selectable antenna elements including a plurality of dipoles and/or a plurality of slot antennas (“slot”). Each dipole and/or each slot provides gain with respect to isotropic. The dipoles may generate vertically polarized radiation and the slots may generate horizontally polarized radiation. Each antenna element may have one or more loading structures configured to decrease the footprint (i.e., the physical dimension) of the antenna element and minimize the size of the antenna apparatus.

Claims

1. A system, comprising:

a housing;

a communication device that can generate or receive a radio frequency (RF) signal; and

an antenna apparatus integral with the housing, the antenna apparatus including a first planar element that can radiate or receive the RF signal in a horizontal polarization and a second planar element that can radiate or receive the RF signal in a vertical polarization, the antenna apparatus including one or more slot antennas having a plurality of loading elements that decrease a footprint of the slot antenna.

2. The system of claim 1, wherein one or more of the slot antennas comprises an aperture formed in the housing.

3. The system of claim 1, wherein the antenna apparatus can further radiate or receive the RF signal in a diagonal polarization.

4. The system of claim 1, wherein the antenna apparatus is further configured to concentrate a radiation pattern of the first planar element.

5. The system of claim 1, wherein the antenna apparatus further radiates or receives the RF signal in a substantially omnidirectional radiation pattern.

6. The system of claim 1 wherein the second planar element includes a reflector, the reflector configured to broaden a frequency response of the antenna apparatus.

7. The system of claim 1 wherein the second planar element includes a director, the director configured to direct a frequency response of the antenna apparatus.