COVERAGE ANTENNA APPARATUS WITH SELECTABLE HORIZONTAL AND VERTICAL POLARIZATION ELEMENTS

• US 20120098730A1
• Filed: 10/24/2011
• Published: 04/26/2012
• 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
• Granted Patent: US 8,704,720 B2
• Time in Patent Office: Days
• US Class Current: 343/876
• 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 communication device configured to generate or receive a radio frequency (RF) signal;

an antenna apparatus configured to radiate or receive the RF signal, the antenna apparatus including a first planar element configured to radiate or receive the RF signal in a horizontal polarization and a second planar element configured to radiate or receive the RF signal in a vertical polarization; and

an antenna element selector configured to couple the RF signal to the first planar element or the second planar element, wherein the antenna element selector comprises a PIN diode network configured to couple the RF signal to the first planar element or the second planar element.