Broadband antenna apparatus

• US 7,088,292 B2
• Filed: 03/15/2005
• Issued: 08/08/2006
• Est. Priority Date: 04/12/2002
• Status: Expired due to Fees

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Yamaura, Tomoya, Kuroda, Shinichi, Asai, Hisato
• Primary Examiner(s): Nguyen, Hoang V.
• Application Number:
  US11/079,243
• Publication Number:
  US 20050156791A1
• Time in Patent Office: 511 Days
• Field of Search: 343/700.MS, 343/702, 343/846
• US Class Current: 343/700.0MS
• CPC Class Codes: H01Q 1/38 formed by a conductive layer on an insulating support patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142
• 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

A broadband antenna apparatus includes a conducting ground plate, on which a three-dimensional member rests. A radiating conductor is stuck or printed on the three-dimensional member in such a manner that at least part of the radiating conductor is opposite to at least part of the ground plate. A wavelength shortening effect is achieved by the interposition of the three-dimensional member between the opposite parts of ground plate 1 and radiating conductor. This effect makes the broadband antenna apparatus smaller and lower in structure.

Claims

1. A broadband antenna apparatus comprising:

a substrate having a conducting ground plate;

a three-dimensional rectangular parallelepiped member disposed on the substrate;

a radiating conductor disposed on at least three adjacent sides of the three-dimensional rectangular parallelepiped member and having a feedpoint positioned adjacent to, but electrically insulated from, the conducting ground plate, and said feedpoint configured to have electrical power transmitted thereto by a feed mechanism, the radiating conductor including a first quarter-circular pattern formed on a first side of the rectangular parallelepiped member parallel to the ground plate, a second quarter-circular pattern formed on a second side of the rectangular parallelepiped member perpendicular to the ground plate, and a third quarter-circular pattern formed on a third side of the rectangular parallelepiped member perpendicular to the ground plate; and

a first resistance material extending across the second and third quarter-circular patterns.