Wideband high gain antenna for multiband employment
An antenna element employable singularly or in an array and configured for concurrent RF transmission and receipt on a plurality of frequencies concurrently. The element is formed of conductive material on a substrate by a pair of substantially identical horns extending in opposite directions to distal tips. A cavity formed between the horns narrows to a narrowest point prior to curving. The element is capable of wideband RF communication on any frequency between a low frequency defined by the distance between the distal tips to a highest frequency defined by the narrowest point of the cavity. The antenna is especially well adapted for portable devices such as smartphones where concurrent cellular, Wi-Fi, and bluetooth communications may be accomplished with a single element. A dielectric planar substrate positioned between the antenna element and a tethered device is employable to reduce a spacing requirement therebetween.
1. An antenna element system for engagement with an electronic device, comprising:
an antenna substrate;
a wideband antenna element formed on a first surface of said antenna substrate and positioned in an engagement with a housing surrounding an RF receiver or transceiver;
a feedline electrically communicating at a first end with said wideband antenna, and adapted at a second end for electrical communication with said RF receiver or transceiver positioned within said housing;
a planar dielectric substrate positioned in-between said wideband antenna and said RF receiver or transceiver and a thickness thereof defining a minimum spacing therebetween;
said electronic device being a cellular phone;
said dielectric substrate formed of FR-4 and having a said thickness of between 164th of an inch to ⅛th of an inch; and
said dielectric substrate having an area equal to or greater than an area of a motherboard of said cellular phone populated with electronic components.
2. An antenna element system of claim 1 , additionally comprising:
said dielectric substrate having a thickness of .032 inches.
3. The antenna system of claim 1 , wherein said wideband antenna comprises:
a first substrate surface, a portion of which is covered with a conductive material, and a portion of which is uncovered;
said conductive material forming a pair of horns, each of said pair of horns having substantially identical shapes and formed of substantially equal areas of said conductive material;
each of said horns each extending in opposite directions to distal tips;
a first cavity formed by said uncovered portion in-between said pair of horns;
said first cavity having a mouth portion, said mouth portion beginning at a first edge along a line extending between said distal tips;
said mouth portion reducing in cross-section as it extends from said first edge from a widest point substantially in-between said distal tips, to a narrowest point in between said pair of horns;
said first cavity extending away from said narrowest point in a curve and extending into a first one of said horns; and
said feedline electrically communicating at a first end with a second one of said horns and configured at a second end for electrical communication with said RF receiver or transceiver.
4. The antenna element of claim 3 , further comprising:
said narrowest point being at a position substantially equidistant from both said distal tips; and
said position of said narrowest point being substantially along a line running perpendicular to said first edge.
5. An antenna element system for engagement with an electronic device, comprising:
an antenna substrate;
a wideband antenna element formed on a first surface of said antenna substrate and positioned in an engagement with a housing surrounding an RF receiver or transceiver;
a feedline electrically communicating at a first end with said wideband antenna, and adapted at a second end for electrical communication with said RF receiver or transceiver positioned within said housing;
a planar dielectric substrate positioned in-between said wideband antenna and said RF receiver or transceiver and a thickness thereof defining a minimum spacing therebetween;
said electronic device being a cellular phone;
said electronic substrate formed of FR-4 and having a said thickness of between 164th of an inch to ⅛th of an inch;
said first portion of said antenna substrate covered with a conductive material, and a having a portion of which is uncovered;
said conductive material forming a pair of horns, each of said pair of horns having substantially identical shapes and formed if substantially equal areas of said conductive material;
each of said horns each extending in opposite directions to distal tips;
a first cavity formed by said uncovered portion in-between said pair of horns;
said first cavity having a mouth portion, said mouth portion beginning at a first edge along a line extending between said distal tips;
said mouth portion reducing in cross-section as it extends from said first edge from a widest point substantially in-between said distal tips, to a narrowest point in between said pair of horns;
said first cavity extending away from said narrowest point in a curve and extending into a first one of said horns; and
said feedline electrically communicating at a first end with a second one of said horns and configured at a second end for electrical communication with said RF receiver or transceiver;
said narrowest point being at a position substantially equidistant from both said distal tips;
said position of said narrowest point being substantially along a line running perpendicular to said first edge;
a pair of “L” shaped conductors extending from a respective one of said horns from a point adjacent to a respective said distal tip of said horns; and
each respective said conductor electrically communicating between a respective said distal tip of one said horn and a respective body portion of the same said horn from which it extends.