HDTV antenna assemblies
View Patent ↗Exemplary embodiments are disclosed of HDTV antenna assemblies. In an exemplary embodiment, a high definition television antenna assembly generally includes a first antenna element and a second antenna element. The first antenna element has a generally annular shape with an opening. The second antenna element includes first and second arms spaced apart from the first antenna element. The first and second arms extend at least partially along portions of the first antenna element. The first and second antenna elements may be electromagnetically coupled without a direct ohmic connection between the first and second antenna elements.
1. A high definition television antenna assembly configured to be operable for receiving VHF high definition television signals and UHF high definition television signals, the high definition television antenna assembly comprising:
a first antenna element having a generally annular shape with an opening and first and second end portions;
a second antenna element including first and second arms spaced apart from the first antenna element and extending at least partially along portions of the first antenna element;
wherein the first and second antenna elements are substantially coplanar and/or along a same side of a substrate, and the first and second antenna elements are electromagnetically coupled without a direct ohmic connection between the first and second antenna elements.
2. The high definition television antenna assembly of claim 1 , wherein the first and second antenna elements cooperatively define a generally menorah shape configured to be operable for receiving VHF and UHF high definition television signals.
3. The high definition television antenna assembly of claim 1 , wherein the first and second antenna elements cooperatively define a shape resembling an upper portion of a menorah not including a base of the menorah.
4. The high definition television antenna assembly of claim 1 , wherein the first and second antenna elements cooperatively define a generally menorah shape in which the first antenna element represents a center starter candle and the first and second arms respectively represent four outer candles along each side of the center starter candle.
5. The high definition television antenna assembly of claim 1 , wherein the substrate is a flat or planar substrate, wherein the first and second antenna elements are along the same side of the flat or planar substrate such that the first and second antenna elements are coplanar.
6. The high definition television antenna assembly of claim 1 , wherein the high definition television antenna assembly is configured to be operable for receiving VHF high definition television signals from about 174 megahertz to about 216 megahertz with a voltage standing wave ratio of less than 3 (referenced to a 300 ohm line) and for receiving UHF high definition television signals from about 470 megahertz to about 698 megahertz with a voltage standing wave ratio of less than 2 (referenced to a 300 ohm line).
7. The high definition television antenna assembly of claim 1 , wherein:
the first and second arms are generally symmetric;
the first arm is a mirror-image of the second arm; and
each of the first and second arms includes a linear bottom portion, an upwardly extending linear portion generally perpendicular to the linear bottom portion, a rounded end portion between the upwardly extending linear portion and a concave portion that extends from the rounded end portion generally under the first antenna element.
8. The high definition television antenna assembly of claim 1 , wherein the substrate is supporting and/or coupled to the first and second antenna elements.
9. The high definition television antenna assembly of claim 8 , wherein:
the substrate comprises polypropylene; and/or
the substrate and the first and second antenna elements are capable of having a radius of curvature of 300 millimeters or less and/or being rolled into an at least partial cylindrical or tubular shape; and/or
the substrate comprises a naturally tacky and/or self-adherent material such that the substrate is operable for mounting the antenna assembly to a glass window without any additional adhesive needed between the glass window and the substrate.
10. The high definition television antenna assembly of claim 1 , further comprising a balun coupled to the first antenna element at an end of an open slot defined between the first and second end portions of the first antenna element.
11. The high definition television antenna assembly of claim 10 , wherein the balun is a 75 to 300 Ohm balun, and the antenna assembly further comprises a 75 ohm coaxial input feed with a type F Female connector for feeding the first antenna element at 75 ohms, and wherein the type F Female connector is downward facing whereby the antenna assembly is positionable flush against a window.
12. The high definition television antenna assembly of claim 1 , wherein the first antenna element comprising a tapered loop antenna element including generally circular inner and outer perimeter portions such that the antenna element's annular shape and opening are generally circular.
13. An antenna assembly operable for receiving VHF and UHF high definition television signals, the antenna assembly comprising:
a plurality of antenna elements including:
a UHF tapered loop antenna element having a generally annular shape with an opening and first and second end portions; and
a VHF antenna element includes first and second arms spaced apart from the UHF tapered loop antenna element and extending at least partially along portions of the UHF tapered loop antenna element;
wherein the UHF tapered loop antenna element and the VHF antenna element are substantially coplanar and/or along a same side of a substrate, and the UHF tapered loop antenna element and the VHF antenna element are electromagnetically coupled without a direct ohmic connection between the UHF tapered loop antenna element and the VHF antenna element.
14. The antenna assembly of claim 13 , wherein the plurality of antenna elements cooperatively define a generally menorah shape configured to be operable for receiving VHF and UHF high definition television signals.
15. The antenna assembly of claim 13 , wherein the plurality of antenna elements cooperatively define a generally menorah shape in which the UHF tapered loop antenna element represents a center starter candle and the first and second arms respectively represent four outer candles along each side of the center starter candle.
16. The antenna assembly of claim 13 , wherein the high definition television antenna assembly is configured to be operable for receiving VHF high definition television signals from about 174 megahertz to about 216 megahertz with a voltage standing wave ratio of less than 3 (referenced to a 300 ohm balanced line when feeding without a balun, or a 75 ohm line when feeding with a coaxial cable via a 75 to 300 ohm balun) and for receiving UHF high definition television signals from about 470 megahertz to about 698 megahertz with a voltage standing wave ratio of less than 2 (referenced to a 300 ohm balanced line when feeding without a balun, or a 75 ohm line when feeding with a coaxial cable via a 75 to 300 ohm balun).
17. The antenna assembly of claim 13 , wherein:
the first and second arms are generally symmetric;
the first arm is a mirror-image of the second arm; and
each of the first and second arms includes a linear bottom portion, an upwardly extending linear portion generally perpendicular to the linear bottom portion, a rounded end portion between the upwardly extending linear portion and a concave portion that extends from the rounded end portion generally under the UHF tapered loop antenna element.
18. The antenna assembly of claim 13 , wherein the substrate is supporting and/or coupled to the UHF tapered loop antenna element and the VHF antenna element, wherein:
the substrate comprises polypropylene; and/or
the substrate and the first and second antenna elements are capable of having a radius of curvature of 300 millimeters or less and/or being rolled into an at least partial cylindrical or tubular shape; and/or
the substrate comprises a naturally tacky and/or self-adherent material such that the substrate is operable for mounting the antenna assembly to a glass window without any additional adhesive needed between the glass window and the substrate.
19. The antenna assembly of claim 13 , further comprising a balun coupled to the UHF tapered loop antenna element at an end of an open slot defined between the first and second end portions of the UHF tapered loop antenna element.
20. The antenna assembly of claim 19 , wherein the balun is a 75 to 300 Ohm balun, and the antenna assembly further comprises a 75 ohm coaxial input feed with a type F Female connector for feeding the UHF tapered loop antenna element at 75 ohms, and wherein the type F Female connector is downward facing whereby the antenna assembly is positionable flush against a window.