Cavity filter comprising a terminal portion having first and second conductive terminals with an elastic member disposed there between

Patent metadata

Field	Value
Publication number	US-12027740-B2
Application number	US-202017118720-A
Country	US
Kind code	B2
Filing date	Dec 11, 2020
Priority date	Jun 12, 2018
Publication date	Jul 2, 2024
Grant date	Jul 2, 2024

Abstract

The present invention relates to a cavity filter. The cavity filter includes: an RF signal connecting portion spaced apart, by a predetermined distance, from an outer member having an electrode pad provided on a surface thereof; and a terminal portion configured to electrically connect the electrode pad of the outer member and the RF signal connecting portion so as to absorb assembly tolerance existing at the predetermined distance and to prevent disconnection of the electric flow between the electrode pad and the RF signal connecting portion, wherein the terminal portion is divided into a first side terminal contacted with the electrode pad and a second side terminal connected to the RF signal connecting portion, absorbs the assembly tolerance existing in a terminal insertion port, in which the terminal portion is provided, through an elastic member provided between the first side terminal and the second side terminal, and prevents disconnection of an electric flow, thereby preventing degradation in performance of an antenna device.

First claim

The invention claimed is:

1. A cavity filter comprising:
an RF signal connecting portion spaced apart, by a predetermined distance, from an external device having an electrode pad provided on a surface thereof; and
a terminal portion provided in a terminal insertion port and is configured to electrically connect the electrode pad of the external device to the RF signal connecting portion,
wherein the terminal portion comprises a first conductive terminal which is in contact with the electrode pad, a second conductive terminal connected to the RF signal connecting portion, and an elastic member provided between the first conductive terminal and the second conductive terminal, and
a portion of any of the first conductive terminal and the second conductive terminal is inserted in a portion of the other of the first and second conductive terminals so as to overlap the other of the first and second conductive terminals.

2. The cavity filter of claim 1 , further comprising a dielectric body inserted into the terminal insertion port so as to cover the outside of the terminal portion,
wherein the first conductive terminal of the terminal portion is disposed in the terminal insertion port and is configured to move with the dielectric body by an assembly force.

3. The cavity filter of claim 2 ,
wherein the dielectric body comprises an upper portion, in a cylindrical shape, having a first diameter and a lower portion in a cylindrical shape, having a second diameter, and the first diameter is larger than the second diameter, and
the second conductive terminal of the terminal portion is connected to the RF signal connecting portion.

4. The cavity filter of claim 1 , wherein one of the first conductive terminal and the second conductive terminal comprises a plurality of tension cut portions elongated in a downward direction.

5. The cavity filter of claim 4 , wherein the plurality of tension cut portions are provided in the first conductive terminal, and an upper end portion of the second conductive terminal is housed in a lower end portion of the first conductive terminal.

6. The cavity filter of claim 5 , further comprising a dielectric body inserted into the terminal insertion port so as to cover the outside of the terminal portion,
wherein the dielectric body supports an outer circumferential surface of the first conductive terminal having the plurality of tension cut portions provided therein.

7. The cavity filter of claim 4 , wherein the plurality of tension cut portions are provided in the second conductive terminal, and a lower end portion of the first conductive terminal is housed in an upper end portion of the second conductive terminal.

8. The cavity filter of claim 1 , further comprising a reinforcement plate which is attached to the second conductive terminal.

9. The cavity filter of claim 8 , wherein the reinforcement plate is fixed to an insertion slot support portion protruding toward the terminal insertion port from a filter body of the cavity filter.

10. The cavity filter of claim 8 , wherein the reinforcement plate has a terminal through-hole through which the terminal portion passes, and
any one of the first conductive terminal and the second conductive terminal of the terminal portion, which passes through the terminal through-hole, has a larger diameter than the terminal through-hole so as to be locked to the reinforcement plate.

11. The cavity filter of claim 10 , wherein the second conductive terminal has an elastic ring installation groove formed on the outer surface thereof, and
at least one elastic ring is positioned in the elastic ring installation groove.

12. The cavity filter of claim 11 , wherein the at least one elastic ring comprises two or more elastic rings which are vertically stacked in the elastic ring installation groove.

13. The cavity filter of claim 1 , wherein a portion of the first conductive terminal is inserted in a portion of the second conductive terminal, and the elastic member is provided as an elastic spring which elastically supports the first conductive terminal.

14. The cavity filter of claim 1 , wherein the elastic member is provided as a bar spring including: a support ring which is supported by a top surface of the second conductive terminal; and a pair of support bars which protrude from the support ring and upwardly inclined in directions crossing each other so as to support the first conductive terminal.

15. The cavity filter of claim 1 , wherein the second conductive terminal of the terminal portion is soldered and fixed to a solder hole formed in a plate extended from the RF signal connecting portion.

16. A connecting structure comprising:
an RF signal connecting portion spaced apart, by a predetermined distance, from an external device having an electrode pad provided on a surface thereof; and
a terminal portion provided in a terminal insertion port and is configured to electrically connect the electrode pad of the external device to the RF signal connecting portion,
wherein the terminal portion comprises a first conductive terminal which is in contact with the electrode pad, a second conductive terminal connected to the RF signal connecting portion, and an elastic member provided between the first conductive terminal and the second conductive terminal, and
a portion of any of the first conductive terminal and the second conductive terminal is inserted in a portion of the other of the first and second conductive terminals so as to overlap the other of the first and second conductive terminals.

17. The connecting structure of claim 16 , further comprising a dielectric body inserted into the terminal insertion port so as to cover the outside of the terminal portion,
wherein the first conductive terminal of the terminal portion is disposed in the terminal insertion port and is configured to move with the dielectric body by an assembly force, and
wherein the dielectric body comprises an upper portion, in a cylindrical shape, having a first diameter and a lower portion in a cylindrical shape, having a second diameter, and the first diameter is larger than the second diameter.

18. The connecting structure of claim 17 , wherein the dielectric body comprises an upper portion, in a cylindrical shape, having a first diameter and a lower portion in a cylindrical shape, having a second diameter, and the first diameter is larger than the second diameter, and
the second conductive terminal of the terminal portion is connected to the RF signal connecting portion.

19. The connecting structure of claim 16 , wherein one of the first conductive terminal and the second conductive terminal comprises a plurality of tension cut portions elongated in a downward direction.

20. The connecting structure of claim 19 , wherein the first conductive terminal comprises the plurality of tension cut portions, and an upper end portion of the second conductive terminal is housed in a lower end portion of the first conductive terminal.

Assignees

• Kmw Inc

Inventors

• Park Nam Shin
• Kim Joung Hoe
• Jang Sung Ho

Classifications

• H01P1/207 Primary

  Hollow waveguide filters (H01P1/212, H01P1/213, H01P1/215, H01P1/219 take precedence) · CPC title

• H01P7/065

  integrated in a substrate · CPC title

• H01P1/2088

  Integrated in a substrate · CPC title

• H01P1/2084

  with dielectric resonators · CPC title

• H01P1/20309

  with dielectric resonator · CPC title