V-slot antenna for circular polarization

• US 6,507,321 B2
• Filed: 05/25/2001
• Issued: 01/14/2003
• Est. Priority Date: 05/26/2000
• Status: Expired due to Fees

• Current Assignee: Sony Limited (Sony Group Corp.)
• Original Assignee: Sony Limited (Sony Group Corp.)
• Inventors: Oberschmidt, Gerald, Brankovic, Veselin, Krupezevic, Dragan
• Primary Examiner(s): Wong, Don
• Assistant Examiner(s): CHEN, SHIH CHAO
• Application Number:
  US09/866,200
• Publication Number:
  US 20020000943A1
• Time in Patent Office: 599 Days
• Field of Search: 343/700.MS, 343/767, 343/770, 343/795, 343/846, 343/860
• US Class Current: 343/770
• CPC Class Codes: H01Q 13/106 Microstrip slot antennas patch antenna elements H01Q9/0407
• CPC Class Codes: H01Q 13/16 Folded slot antennas

Abstract

The present invention relates to a circular polarized antenna comprising a planar dielectric substrate comprising a front and a back dielectric face, at least one subantenna means comprising a first and second element for radiating and receiving circular polarized electromagnetic signals, at least one transmission line means for transmitting signals from and to said at least one subantenna means, wherein the antenna is characterized in that the first and second elements of the subantenna means are slots arranged orthogonal to each other in a V-shape on the front dielectric face of the substrate and in that the transmission line means are arranged on the back dielectric face of the substrate. This structure provides a simple configuration which can be produced at low costs and is suitable for the use in a planar array antenna, in particular due to the decoupling of the feed system from the radiating element.

Claims

1. Antenna comprising:

a planar dielectric substrate comprising a front and a back dielectric face;

at least one subantenna means comprising a first and second elements for radiating and receiving circular polarized electromagnetic signals; and

at least one transmission line means for transmitting signals from and to said subantenna means, characterized in that the first and second elements of the subantenna means are slots arranged orthogonal to each other in a V-shape on the front dielectric face of the substrate, the transmission line means being arranged on the back dielectric face of the substrate, and the antenna being arranged as an antenna element in a phase antenna array comprising a plurality of antenna elements.