Dual Slot Coupled Sectorial Loop Antenna

• US 20070285332A1
• Filed: 08/07/2007
• Published: 12/13/2007
• Est. Priority Date: 09/13/2004
• Status: Abandoned Application

• Current Assignee: EMAG Technologies, Inc.
• Original Assignee: EMAG Technologies, Inc.
• Inventors: Sarabandi, Kamal, Behdad, Nader
• Application Number:
  US11/835,254
• Publication Number:
  US 20070285332A1
• Time in Patent Office: Days
• US Class Current: 343/866
• CPC Class Codes: H01Q 5/28 Arrangements for establishing polarisation or beam width over two or more different wavebands
• CPC Class Codes: H01Q 5/357 using a single feed point
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop

Abstract

A dual-slot coupled sectorial loop antenna (CSLA). The dual-slot CSLA includes a metalized layer deposited on a dielectric substrate. Portions of the metalized layer are removed to define two pie-slice shaped sectors that are electrically isolated from the remaining portion of the metalized layer, where points of the pie-slice shaped sectors oppose each other and are electrically coupled to a common feed.

Claims

1. A coupled sectorial loop slot antenna comprising:

a substrate;

a metalized layer deposited on one side of the substrate, said metalized layer including a first removed portion defining a first pie-slice shaped sector of the metalized layer electrically isolated from a remaining portion of the metalized layer and a second removed portion defining a second pie-slice shaped sector electrically isolated from the remaining portion of the metalized layer, wherein the remaining portion is a ground portion; and

a feed electrically coupled to points of the two pie-shaped sectors.

2. The antenna according to claim 1 wherein the substrate is a dielectric substrate.

3. The antenna according to claim 1 wherein the feed is electrically coupled to an AC source.

4. The antenna according to claim 1 wherein the antenna is horizontally polarized.

5. A coupled sectorial loop slot antenna comprising a metalized layer deposited on a dielectric substrate, said metalized layer including a first pie-slice shaped sector electrically isolated from a ground portion of the metalized layer and a second pie-slice shaped sector electrically isolated from the ground portion, wherein points of the first and second sectors face each other.

6. The slot antenna according to claim 5 wherein the points of the first and second sectors are coupled to a feed.

7. The slot antenna according to claim 6 wherein the feed is electrically coupled to an AC source.

8. The slot antenna according to claim 5 wherein the antenna is horizontally polarized.

9. A method for providing a coupled sectorial loop slot antenna, said method comprising:

providing a substrate;

depositing a metalized layer on one side of the substrate;

removing a first portion of the metalized layer to define a first pie-slice shaped sector of the metalized layer electrically isolated from a remaining portion of the metalized layer;

removing a second portion of the metalized layer to define a second pie-slice shaped sector electrically isolated from the remaining portion of the metalized layer; and

electrically coupling a feed to points of the two pie-shaped sectors.

10. The method according to claim 9 wherein the remaining portion is a ground portion.

11. The method according to claim 9 further comprising coupling an AC source to the feed.