Printed Compound Loop Antenna

• US 20110018776A1
• Filed: 09/08/2010
• Published: 01/27/2011
• Est. Priority Date: 03/26/2008
• Status: Active Grant

• Current Assignee: DockOn AG
• Original Assignee: VIDI Tech AG
• Inventors: Brown, Forrest James
• Granted Patent: US 8,462,061 B2
• Time in Patent Office: Days
• US Class Current: 343/788
• CPC Class Codes: H01Q 21/28 Combinations of substantially independent non-interacting antenna units or systems multiple beam H01Q25/00
• CPC Class Codes: H01Q 21/30 Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
• 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
• CPC Class Codes: H01Q 9/30 with feed to end of elongated active element, e.g. unipole H01Q9/44 takes precedence
• CPC Class Codes: H01Q 9/40 Element having extended radiating surface
• CPC Class Codes: H01Q 9/42 with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

Abstract

The present invention relates to printed or single-sided compound field antennas. The single-sided compound loop antennas have coplanar electric field radiators and magnetic loops with electric fields orthogonal to magnetic fields that achieve performance benefits in higher bandwidth (lower Q), greater radiation intensity/power/gain, and greater efficiency.

Claims

1. A single-sided antenna, comprising:

a magnetic loop located on a plane generating a magnetic field and having a first inductive reactance;

an electric field radiator located on the plane emitting an electric field and having a first capacitive reactance, wherein the electric field is orthogonal to the magnetic field, and wherein a physical arrangement between the electric field radiator and the magnetic loop results in a second capacitive reactance; and

an electrical trace coupling the electric field radiator to the magnetic loop and having a second inductive reactance, wherein the first inductive reactance and the second inductive reactance match the first capacitive reactance and the second capacitive reactance.