Efficient loop antenna system and method
View Patent ↗An antenna including a conductive loop having a first top surface portion, the conductive loop having a first edge portion interrupted by a gap defining a feed point, a conductive strip having a second top surface, the conductive loop lying in a plane defined by the second top surface, the conductive strip having a second edge portion extending between first and second opposing distal ends, the second edge portion being spaced from the first edge portion, and the second edge portion extending along the first edge portion at a substantially constant distance from the first edge portion, and wherein the conductive strip is electrically isolated from the conductive loop and is structurally configured and positioned relative to the conductive loop to adjust an input impedance of the conductive loop.
1. A television (TV) antenna, comprising,
a conductive loop having a first top surface and a first bottom surface, the first top surface and the first bottom surface being separated by a first thickness, the conductive loop having a first edge portion interrupted by a gap defining a feed point, and the conductive loop being responsive to electromagnetic signals in a frequency band for receiving TV signals; and
a conductive strip having a second top surface and a second bottom surface, the second top surface and the second bottom surface being separated by a second thickness substantially similar to the first thickness, the conductive loop lying in a plane defined by the second top surface, the conductive strip having a first distal end and an opposing second distal end and a second edge portion extending between the first and second distal ends, the second edge portion being spaced from the first edge portion, and the second edge portion extending along the first edge portion at a substantially constant distance from the first edge portion;
wherein the conductive strip is electrically isolated from the conductive loop and is structurally configured and positioned relative to the conductive loop to adjust an input impedance of the conductive loop, wherein the conductive loop is one of a square loop and a rectangular loop.
2. The TV antenna of claim 1 , wherein the second top surface is substantially coplanar with the first top surface such that the second edge portion opposes the first edge portion.
3. The TV antenna of claim 1 , wherein the second top surface is substantially perpendicular to the first top surface such that the second edge portion opposes the first top surface.
4. The TV antenna of claim 1 , wherein the conductive strip includes one of zinc, copper, and aluminum; and wherein the conductive loop includes one of zinc, copper, and aluminum.
5. The TV antenna of claim 1 , wherein the first edge portion is substantially parallel to the second edge portion.
6. The TV antenna of claim 1 , wherein the frequency band ranges from approximately 470 MHz to 725 MHz.
7. The TV antenna of claim 1 , wherein the conductive strip is structurally configured and positioned relative to the conductive loop to adjust the input impedance of the conductive loop from approximately 300 ohms to approximately 75 ohms.
8. A system, comprising:
a Television (TV) antenna configured to receive TV signals, wherein the TV antenna includes:
a conductive loop having a first top surface and a first bottom surface, the first top surface and the first bottom surface being separated by a first thickness, the conductive loop having a first edge portion interrupted by a gap defining a feed point, and the conductive loop being responsive to electromagnetic signals in a TV frequency band, wherein the conductive loop is a square loop or a rectangular loop; and
a conductive strip having a second top surface and a second bottom surface, the second top surface and the second bottom surface being separated by a second thickness substantially similar to the first thickness, the conductive loop lying in a plane defined by the second top surface, the conductive strip having a first distal end and an opposing second distal end and a second edge portion extending between the first and second distal ends, the second edge portion being spaced from the first edge portion, and the second edge portion extending along the first edge portion at a substantially constant distance from the first edge portion;
wherein the conductive strip is electrically isolated from the conductive loop and is structurally configured and positioned relative to the conductive loop to adjust an input impedance of the conductive loop.
9. The system of claim 8 , wherein the second top surface is substantially coplanar with the first top surface such that the second edge portion opposes the first edge portion.
10. The system of claim 8 , wherein the second top surface is substantially perpendicular to the first top surface such that the second edge portion opposes the first top surface.
11. The system of claim 8 , wherein the conductive strip includes one of zinc, copper, and aluminum; and wherein the conductive loop includes one of zinc, copper, and aluminum.
12. The system of claim 8 , wherein the first edge portion is substantially parallel to the second edge portion.
13. The system of claim 8 , wherein the frequency band ranges from approximately 470 MHz to 725 MHz.
14. The system of claim 8 , wherein the conductive strip is structurally configured and positioned relative to the conductive loop to adjust the input impedance of the conductive loop from approximately 300 ohms to approximately 75 ohms.
15. The system of claim 8 , further comprising an amplifier coupled to the TV antenna.
16. A system, comprising:
a Television (TV) antenna configured to receive TV signals, wherein the TV antenna includes:
a conductive loop having a first top surface and a first bottom surface, the first top surface and the first bottom surface being separated by a first thickness, the conductive loop having a first edge portion interrupted by a gap defining a feed point, and the conductive loop being responsive to electromagnetic signals in a TV frequency band, wherein the conductive loop is a square loop or a rectangular loop; and
a conductive strip having a second top surface and a second bottom surface, the second top surface and the second bottom surface being separated by a second thickness substantially similar to the first thickness, the conductive loop lying in a plane defined by the second top surface, the conductive strip having a first distal end and an opposing second distal end and a second edge portion extending between the first and second distal ends, the second edge portion being spaced from the first edge portion, and the second edge portion being parallel to the first edge portion;
wherein the conductive strip is electrically isolated from the conductive loop and is structurally configured and positioned relative to the conductive loop to adjust an input impedance of the conductive loop; and
an amplifier coupled to the TV antenna.
17. The system of claim 16 , wherein the second top surface is substantially coplanar with the first top surface such that the second edge portion opposes the first edge portion.
18. The system of claim 16 , wherein the second top surface is substantially perpendicular to the first top surface such that the second edge portion opposes the first top surface.
19. The system of claim 16 , wherein the conductive strip includes one of zinc, copper, and aluminum; and wherein the conductive loop includes one of zinc, copper, and aluminum.
20. The system of claim 16 , wherein the frequency band ranges from approximately 470 MHz to 725 MHz.
21. The system of claim 16 , wherein the conductive strip is structurally configured and positioned relative to the conductive loop to adjust the input impedance of the conductive loop from approximately 300 ohms to approximately 75 ohms.