ANTENNA FOR ULTRA WIDE BAND TELECOMMUNICATIONS

Abstract

An antenna for an ultra wide band telecommunications, provided with a rectangular conductive plate where a bow tie slot is formed, an auxiliary element extended from said rectangular conductive plate above one of two vertical angle parts opposed at a center part of the bow tie slot, a feeding part formed at one of the vertical angle parts, and a grounding part formed at the other vertical angle part.

Description

BRIEF DESCRIPTION OF THE INVENTION

FIG. 1 is a schematic view showing the structure of an antenna according to one embodiment of the present invention.

FIG. 2 is a graph showing a VSWR characteristic of the antenna shown in FIG. 1.

FIG. 3 is a schematic view showing a conventional bow tie slot antenna.

FIG. 4 is a graph showing a VSWR characteristic of a conventional bow tie antenna shown in FIG. 3.

FIG. 5 is a schematic view showing the structure of an antenna according to another embodiment of the present invention.

FIG. 6 is a graph showing a VSWR characteristic of the antenna shown in FIG. 5.

FIG. 7 is a graph showing a VSWR characteristic of an antenna in which a auxiliary antenna element is detached from the antenna of FIG. 5.

FIG. 8 is a schematic view showing the structure of an antenna according to a further embodiment of the present invention.

Claims

1. An antenna comprising: a rectangular conductive plate,a bow tie slot formed in said rectangular conductive plate,an auxiliary element extended from said rectangular conductive plate above one of two vertical angle parts opposed at a center part of the bow tie slot,a feeding part formed at one of the vertical angle parts, anda grounding part formed at the other vertical angle part.

2. An antenna according to claim 1, wherein said auxiliary element is formed so as to rise up vertically around the center of upper side of conductive plate, and extend along upper side with a constant space being kept.

3. An antenna according to claim 1, wherein said rectangular conductive plate, said bow tie slot and said auxiliary element are formed by stamping out a metallic plate.

4. An antenna according to claim 1, further comprising: an auxiliary antenna element extended along the bow tie slot, which is formed on the side of at least one of vertical angle parts that oppose at the center part of the bow tie slot.

5. An antenna comprising: a rectangular conductive plate slot formed in said rectangular conductive plate,a notch slit formed from said slot to a vertical side of the rectangular conductive plate,a feeding part formed at one side of said notch slit,an auxiliary element formed on an upper side of the conductive plate in which said feeding part is formed, anda grounding part formed at the other side of said notch slit.

6. An antenna according to claim 5, wherein said slot is formed like diamond or taper, and located on the side of the upper side of the rectangular conductive plate, and a grounding part is formed on the side of the lower side of the rectangular conductive plate.

7. An antenna according to claim 5, wherein said auxiliary element is formed so as to rise up vertically at an end portion of the upper side on the side of said feeding part, and extend along upper side of the conductive plate with a constant space being kept.

8. An antenna according to claim 5, wherein said auxiliary element is formed in the upper side part of the conductive plate by forming a hooked notch slit substantially from the center part of the upper side of the conductive plate toward a vertical side on the side where said feeding part is formed.

9. An antenna according to claim 5, wherein an auxiliary antenna element extended along said slot is formed on one of the sides of said notch slit.