Antenna device

• US 7,911,393 B2
• Filed: 10/08/2009
• Issued: 03/22/2011
• Est. Priority Date: 05/18/2005
• Status: Expired due to Fees

• Current Assignee: Hitachi Cable Limited (Proterial Ltd.)
• Original Assignee: Hitachi Cable Limited (Proterial Ltd.)
• Inventors: Zhang, Xin
• Primary Examiner(s): DINH, TRINH VO
• Application Number:
  US12/588,224
• Publication Number:
  US 20100103067A1
• Time in Patent Office: 530 Days
• Field of Search: None
• US Class Current: 343/700.0MS
• CPC Class Codes: H01Q 1/246 specially adapted for base stations
• 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 13/206 Microstrip transmission line antennas
• CPC Class Codes: H01Q 19/108 Combination of a dipole with a plane reflecting surface H01Q19/106 takes precedence; strip line H01Q9/065

Abstract

An antenna device includes a dielectric substrate, an electric supply line that includes a microstrip line and is formed on the dielectric substrate, an antenna element that includes a microstrip line and is formed on the dielectric substrate, and a reflector plate disposed on the dielectric substrate at a predetermined angle of inclination. The reflector plate is allowed to move relative to the dielectric substrate while keeping the predetermined angle of inclination.

Claims

1. An antenna device, comprising:

a dielectric substrate;

an electric supply line that comprises a microstrip line and is formed on the dielectric substrate;

an antenna element that comprises a microstrip line and is formed on the dielectric substrate; and

a reflector plate disposed at a predetermined angle of inclination to the dielectric substrate,

wherein the reflector plate is allowed to move relative to the dielectric substrate while keeping the predetermined angle of inclination.

2. The antenna device according to claim 1, wherein the electric supply line and the antenna element deviate from a dimensional factor that allows the electric supply line and the antenna element to have an omnidirectivity, and

wherein the electric supply line and the antenna element have a dimensional factor that allows the electric supply line and the antenna element to have an elliptical directivity.

3. The antenna device according to claim 1, wherein a distance between the antenna element and an adjacent antenna element along a longitudinal direction of the dielectric substrate deviates from a distance between the antenna element and the adjacent antenna element along the longitudinal direction of the dielectric substrate that allows the electric supply line and the antenna element to have an omnidirectivity.