Antenna arrangement using indirect interconnection
An antenna arrangement comprising an antenna feeding network, an electrically conductive reflector and at least one radiating element arranged on said reflector is provided. The antenna feeding network comprises at least one substantially air filled coaxial line, each coaxial line comprising a central inner conductor and an elongated outer conductor at least partly surrounding the central inner conductor, wherein at least one radiating element and at least one coaxial line are configured to interconnect indirectly.
1. An Antenna arrangement comprising an antenna feeding network, an electrically conductive reflector and at least one radiating element arranged on said reflector, the antenna feeding network comprising at least one substantially air filled coaxial line, each of the coaxial line comprising a central inner conductor and an elongated outer conductor surrounding the central inner conductor, wherein the at least one radiating element and the central inner conductor of said at least one coaxial line interconnect indirectly, wherein said at least one radiating element comprises a coupling element for interconnecting with the at least one central inner conductor, wherein the coupling element comprises a free end portion, wherein said at least one radiating element interconnects with said at least one central inner conductor via said free end portion, wherein said antenna arrangement further comprises a snap on mechanism, wherein the snap on mechanism comprises a snap on portion integrally arranged on the coupling element, at least in proximity of the free end portion, and a complementary snap on portion arranged on the inner conductor.
2. The antenna arrangement according to claim 1 , wherein the at least one radiating element and the at least one coaxial line are configured to interconnect capacitively and/or inductively.
3. The antenna arrangement according to claim 1 , further comprising at least one insulating layer arranged to provide the indirect interconnection.
4. The antenna arrangement according to claim 3 , wherein the insulating layer is arranged on the coupling element and/or on said at least one inner conductor.
5. The antenna arrangement according to claim 3 , wherein the insulating layer is placed between the coupling element and said at least one inner conductor.
6. The antenna arrangement according to claim 1 , wherein said at least one inner conductor comprises a receiving cavity or through hole.
7. The antenna arrangement according to claim 1 , wherein the free end portion is conically formed.
8. The antenna arrangement according to claim 1 , wherein the coupling element comprises a conductor line portion, and wherein said free end portion is formed with a step at an end of said conductor line portion, said free end portion having a greater diameter than the conductor line portion, wherein said step forms said snap on portion.
9. The antenna arrangement according to claim 1 , wherein the snap on mechanism comprises a snap on bracket comprising the complementary snap on portion, and wherein the snap on bracket is configured to be snapped around the at least one of the inner conductors.
10. The antenna arrangement according to claim 1 , wherein the snap on mechanism comprises a dielectric support element configured to hold and at least partially surround the at least one of the inner conductors, wherein the dielectric support element comprises the complementary snap on portion.
11. The antenna arrangement according to claim 1 , wherein the complementary snap on portion is realized in the form of snap on fingers, which are configured to engage the snap on portion when the free end portion is in an engaged position.
12. The antenna arrangement according to claim 1 , wherein the electrically conductive reflector comprises an opening and wherein the coupling element extends through the opening to the inner conductor.
13. The antenna arrangement according to claim 1 , wherein the snap on portion of said coupling element comprises a snap on bracket configured to engage with said complementary snap on portion arranged on said inner conductor.
14. The antenna arrangement according to claim 13 , wherein said snap on bracket is formed at the free end portion of said coupling element as a pair of snap on fingers.
15. The antenna arrangement according to claim 14 , wherein said complementary snap on portion is provided in the form of a portion of the envelope surface of said inner conductor.
16. The antenna arrangement according to claim 15 , wherein said portion is formed as a recess in said envelope surface.