Broadband omnidirectional slot antenna with an electrical strap connector
First Claim
Patent Images
1. A broadband omnidirectional slot antenna consisting of an electrically conductive tube at least λ
- long, extending along a major axis, having a girth in the range λ
/2 to λ and
a slot of a length approximately λ
/2 to λ and
a width in the range λ
/16 to 3 λ
/16 extending through the tube wall parallel to the major axis;
a two conductor transmission line for coupling energy from a signal source to the said slot antenna, one of said conductors connected to the inner wall of the said tube opposite the said slot;
a conductive strap having one end thereof connected to one edge of the slot with λ
/8 of the middle of the slot along the tube axis and the other end thereof connected to the other of said conductors, said strap having a dimension along the major axis, for most of the length of the strap, in the range greater than λ
/16, and less than λ
/4, and of length at least 11/2times the direct distance between the said connection point to the transmission line and the said slot edge.
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Abstract
A broadband omnidirectional slot antenna suitable for transmission of television signals employing a wide slot and a wide, long strap between a feed point and the slot edge.
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Citations
7 Claims
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1. A broadband omnidirectional slot antenna consisting of an electrically conductive tube at least λ
- long, extending along a major axis, having a girth in the range λ
/2 to λ and
a slot of a length approximately λ
/2 to λ and
a width in the range λ
/16 to 3 λ
/16 extending through the tube wall parallel to the major axis;
a two conductor transmission line for coupling energy from a signal source to the said slot antenna, one of said conductors connected to the inner wall of the said tube opposite the said slot;
a conductive strap having one end thereof connected to one edge of the slot with λ
/8 of the middle of the slot along the tube axis and the other end thereof connected to the other of said conductors, said strap having a dimension along the major axis, for most of the length of the strap, in the range greater than λ
/16, and less than λ
/4, and of length at least 11/2times the direct distance between the said connection point to the transmission line and the said slot edge. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- long, extending along a major axis, having a girth in the range λ
Specification