Folded monopole antenna

• US 20060001592A1
• Filed: 12/24/2002
• Published: 01/05/2006
• Est. Priority Date: 11/13/2002
• Status: Abandoned Application

• Current Assignee: Eung-Soon Chang
• Original Assignee: Eung-Soon Chang
• Inventors: Chang, Eung-Soon
• Application Number:
  US10/530,212
• Publication Number:
  US 20060001592A1
• Time in Patent Office: Days
• US Class Current: 343/895
• CPC Class Codes: H01Q 1/242 specially adapted for hand-held use
• 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

The present invention relates to a folded monopole antenna which includes an antenna pattern in which an impedance is decreased to a metal itself resistance based on a feeding point which is provided in an upper portion of a wireless instrument and is continuously extended in a linear shape having a certain thickness and is formed in an upward direction for thereby forming a value L, and an offset point which is provided near the feeding point for thereby forming a value C, and an antenna casing which protects and insulates the antenna pattern. In the present invention, it is possible to obtain a lower gain compared to a conventional helical antenna, and a value Q is largely enhanced.

Claims

1. A folded monopole antenna, comprising:

an antenna pattern in which an impedance is decreased to a metal itself resistance based on a feeding point which is provided in an upper portion of a wireless instrument and is continuously extended in a linear shape having a certain thickness and is formed in an upward direction for thereby forming a value L, and an offset point which is provided near the feeding point for thereby forming a value C; and

an antenna casing which protects and insulates the antenna pattern.

2. The antenna of claim 1, wherein said antenna pattern is generally formed in a rectangular shape and reciprocates in a longitudinal direction by a few times in the interior of a rectangular shape.

3. The antenna of claim 1, wherein said antenna pattern is extended in a longitudinal- direction by a certain distance and is bent in a certain direction and downwardly reciprocates in the left and right directions, and a part of the left portion on the plane is bent at an angle of 90°

.

4. The antenna of claim 1, wherein said antenna pattern is extended in a longitudinal direction and is bent in a certain direction and is extended by a certain distance and downwardly reciprocates in the left and right directions.

5. The antenna of claim 1, wherein said antenna pattern is generally rectangular and is bent in a direction of the center by a few times on the plane.