Supporting of a helix resonator

• US 5,570,071 A
• Filed: 10/23/1992
• Issued: 10/29/1996
• Est. Priority Date: 05/04/1990
• Status: Expired due to Fees

• Current Assignee: Pulse Finland Oy (Yageo Corporation)
• Original Assignee: Pulse Finland Oy (Yageo Corporation)
• Inventors: Ervasti, Kimmo A.
• Primary Examiner(s): Lee, Benny
• Assistant Examiner(s): GAMBINO, DARUIS
• Application Number:
  US08/146,037
• Time in Patent Office: 1,467 Days
• Field of Search: 333/219, 333/202-205, 333/235
• US Class Current: 333/219
• CPC Class Codes: H01P 7/005 Helical resonators; Spiral resonators

Abstract

In the mechanical supporting of the resonator coil it is known to use around the resonator coil an injection moulded plastic U-shaped binder ring, with the loops of the coil running through the arms in the binder ring. The resonator wire can also be wound around a plastic body. The methods of the prior art considerably weaken the Q value of the resonator. According to the invention it is possible to achieve good supporting, without a weakening of the Q value, in such a way that the resonator coil (1) is supported from at least one point by a supporting leg (6) of metal, which one end is fastened to the wire of the resonator coil (1) and the other end is fastened to an insulation piece (8) having low losses, which in turn is fastened to the installation plate.

Claims

1. A supporting arrangement for a Helix resonator of a type having a resonator coil defining an axis therethrough, where the resonator coil is spaced from an installation plate and the axis of the coil is mainly parallel with the surface of the plate and at least one loop of the coil is provided with a protruding part wherein the resonator coil is fastened from the protruding part to a surface of a small insulation piece and an opposite surface of the insulation piece is fastened to the installation plate.

2. A supporting arrangement according to claim 1, characterized in that the surface area of the insulation piece in the direction of the surface of the installation plate is the same or only slightly larger than the surface area of the part of the insulation piece to which the protruding part of the resonator is supported.

3. A supporting arrangement according to claim 1, characterized in that the surface of the insulation piece that is directed away from the installation plate is of conducting material.

4. A supporting arrangement according to claim 3, characterized in that the surface of the insulation piece that is directed towards the installation plate is of conducting material.

5. A supporting arrangement according to claim 2, characterized in that the insulation piece is fastened to the resonator and the installation piece by pressure moulding.

6. A supporting arrangement according to claim 3, wherein in that the insulation piece is a piece cut out from a circuit board.

7. A supporting arrangement according to claim 1, wherein in that the protruding part is a supporting leg of metal, one end of which is fastened to the wire of the resonator coil and the other end is fastened to the insulation piece.

8. A supporting arrangement according to claim 1, wherein in that the installation plate forms one wall of the resonator box.

9. A supporting arrangement according to claim 4, wherein in that the insulation piece is a piece cut out from a circuit board.

10. A supporting arrangement according to claim 2, wherein in that the protruding part is a supporting leg of metal, one end of which is fastened to the wire of the resonator coil and the other end is fastened to the insulation piece.

11. A supporting arrangement according to claim 2, wherein in that the installation plate forms one wall of the resonator box.

12. A supporting device for a helix resonator of a type having a resonator coil with a plurality of turns and at least one leg portion for providing connection to an installation plate surface, the resonator coil defining an axis therethrough, the supporting device comprising:

a separate supporting member extending from the installation plate surface wherein a portion of the supporting member is connected to an outside surface of at least one of the plurality of turns of the resonator coil, such that the plurality of turns of the resonator coil are spaced apart from the installation plate surface.

13. A supporting device for a helix resonator as recited in claim 12, wherein the supporting member is connected to the resonator coil such that the axis of the resonator coil is substantially parallel with the installation plate surface.

14. A supporting device for a helix resonator as recited in claim 12, wherein the supporting device further includes an insulation member connecting the supporting member to the installation plate surface.

15. A supporting device for a helix resonator as recited in claim 14, wherein the insulation member includes first and second insulation layers spaced apart by a lossy insulation material with the first insulation layer being coupled a portion of the supporting member and the second insulation layer being coupled to the installation plate surface.

16. A supporting device for a helix resonator as recited in claim 12, wherein the supporting member is fabricated from a conductive material.