Method, system and apparatus for an antenna
View Patent ↗Embodiments of the present invention provide a microstrip-coupled dipole antenna. A microstrip of the antenna may be formed on top of a printed circuit board (PCB) and coupled to a transmission line such that the microstrip is operable to transfer electromagnetic energy fed to it by the transmission line to a dipole structure on the bottom of the PCB that, in turn, radiates a broadband electromagnetic signal.
1. An antenna, comprising;
a dipole gap;
a notch filter;
a dipole structure comprising a first antenna conductor and a second antenna conductor; and
a feed structure coupled to a feed point, wherein the feed structure is a microstrip coupled line operable to couple a signal delivered to the feed point to the first antenna conductor and the second antenna conductor, wherein at least a portion of the microstrip coupled line is above the feed point, wherein the microstrip coupled line is over at least a portion of the first antenna conductor and at least a portion of the second antenna conductor, wherein the feed structure and the first antenna conductor and the second antenna conductor are formed on a printed circuit board (PCB), and wherein the feed structure and the microstrip coupled line are formed on a first side of the PCB and the first antenna conductor and the second antenna conductor are formed on a second side of the PCB.
2. The antenna of claim 1 , wherein the microstrip coupled line comprises a first portion along a first axis, a second portion on a second axis substantially perpendicular to the first axis.
3. The antenna of claim 2 , wherein the first portion and the second portion are connected by a curved portion.
4. The antenna of claim 2 , wherein the microstrip coupled line comprises a third portion along the first axis.
5. The antenna of claim 1 , wherein the microstrip coupled line is above at least a portion of the dipole gap.
6. The antenna of claim 1 , wherein the notch filter is operable in the frequencies between approximately 5.15 GHz and approximately 5.35 GHz.
7. The antenna of claim 1 , comprising a notched matching stub.
8. The antenna of claim 7 , wherein the notched matching stub is operable to filter frequencies less than approximately 3 GHz.
9. The antenna of claim 1 , comprising a first set of teeth and a second set of teeth.
10. The antenna of claim 9 , wherein the first set of teeth and the second set of teeth are formed on the second side of the PCB.
11. The antenna of claim 10 , wherein the first set of teeth and the second set of teeth are in a comb pattern.
12. The antenna of claim 10 , wherein the first antenna conductor has a first cutout and the second antenna conductor has a second cutout.
13. The antenna of claim 10 , wherein the first set of teeth and the second set of teeth are in a meanderline pattern.
14. The antenna of claim 13 , wherein the first antenna conductor has a first cutout and the second antenna conductor has a second cutout.
15. The antenna of claim 9 , wherein the notch filter is over at least one of the first set of teeth.