Antenna structure with filter effect
View Patent ↗An antenna structure for transmitting and/or receiving radio waves has a symmetrically arranged radiator element with a first connecting terminal and a second connecting terminal, said radiator element being tuned to a useful frequency. Moreover, it has at least one conductor structure connected in parallel with the radiator element. The conductor structure comprises an open-circuited first line element, which is coupled to the first connecting terminal, and an open-circuited second line element, which is coupled to the second connecting terminal. In this case, a length of the first line element and of the second line element essentially corresponds to the integral multiple of a quarter wavelength corresponding to a blocking frequency. The first line element and the second line element run parallel to one another.
1. An antenna structure for transmitting and/or receiving radio waves comprising:
a symmetrical radiator element with first and second connecting terminals, said radiator element being tuned to a useful frequency,
at least one conductor structure connected in parallel with the radiator element, said conductor structure having an open-circuited first line element coupled to the first connecting terminal, and an open-circuited second line element coupled to the second connecting terminal, wherein the first and second line elements are of the same length essentially corresponding to the integral multiple of a quarter of a wavelength corresponding to a blocking frequency, and the first and the second line elements arranged in a manner running parallel to one another, and
at least one second conductor structure connected in parallel with the radiator element, said second conductor structure having an open-circuited third line element coupled to the first connecting terminal, and an open-circuited fourth line element coupled to the second connecting terminal, the third and fourth line elements being of the same length essentially corresponding to the integral multiple of a quarter of a wavelength corresponding to a second blocking frequency different from the blocking frequency.
2. An antenna structure according to claim 1 , wherein the radiator element is a folded dipole.
3. An antenna structure according to claim 2 , wherein the radiator element is a folded dipole in angular form.
4. An antenna structure according to claim 1 , wherein the radiator element is a symmetrical frame antenna with a closed border.
5. An antenna structure according to claim 1 , wherein the radiator element is an approximately fractal structure generated by a finite number of iteration steps generating a partial fractal.
6. An antenna structure according to claim 1 , wherein the conductor structure is an approximately fractal structure generated by a finite number of iteration steps generating a partial fractal.
7. An antenna structure according to claim 1 , wherein the conductor structure comprises first and second line elements running parallel in meandering form.
8. An antenna structure according to claim 1 , wherein the conductor structure is arranged within an area bounded by the radiator element.
9. An antenna structure according to claim 1 , wherein the conductor structure is arranged outside an area bounded by the radiator element.
10. An antenna structure according to claim 1 , wherein the radiator element is symmetrical and has a connection for feeding a DC voltage into the radiator element.
11. An antenna structure according to claim 1 , wherein the antenna structure is integrated in a housing of a semiconductor component.
12. An antenna structure according to claim 1 , wherein the antenna structure is in printed form on a printed circuit board.
13. An antenna structure for transmitting and/or receiving radio waves comprising:
a symmetrical radiator element with first and second connecting terminals, said radiator element being tuned to a useful frequency,
at least one conductor structure connected in parallel with the radiator element, said conductor structure having an open-circuited first line element coupled to the first connecting terminal, and an open-circuited second line element coupled to the second connecting terminal, wherein the first and second line elements are of the same length essentially corresponding to the integral multiple of a quarter of a wavelength corresponding to a blocking frequency, and the first and the second line elements arranged in a manner running parallel to one another, wherein the conductor structure is arranged within an area bounded by the radiator element.
14. An antenna structure according to claim 13 , further comprising at least one second conductor structure connected in parallel with the radiator element, said second conductor structure having an open-circuited third line element coupled to the first connecting terminal, and an open-circuited fourth line element coupled to the second connecting terminal, the third and fourth line elements being of the same length essentially corresponding to the integral multiple of a quarter of a wavelength corresponding to a second blocking frequency different from the blocking frequency.
15. An antenna structure according to claim 13 , wherein the radiator element is a symmetrical frame antenna with a closed border.
16. An antenna structure according to claim 13 wherein the radiator element is an approximately fractal structure generated by a finite number of iteration steps generating a partial fractal.
17. An antenna structure according to claim 13 , wherein the conductor structure is an approximately fractal structure generated by a finite number of iteration steps generating a partial fractal.
18. An antenna structure according to claim 13 , wherein the conductor structure comprises first and second line elements running parallel in meandering form.
19. An antenna structure according to claim 13 , wherein the conductor structure is arranged within an area bounded by the radiator element.
20. An antenna structure according to claim 13 , wherein the conductor structure is arranged outside an area bounded by the radiator element.
21. An antenna structure according to claim 13 , wherein the radiator element is symmetrical and has a connection for feeding a DC voltage into the radiator element.
22. An antenna structure according to claim 13 , wherein the antenna structure is integrated in a housing of a semiconductor component.
23. An antenna structure according to claim 13 , wherein the antenna structure is in printed form on a printed circuit board.