Title:
RESONANCE DEVICE,COUPLING ELEMENT USED FOR IT AND RADIO FREQUENCY FILTER USING IT
Document Type and Number:
Japanese Patent JPH07312502
Kind Code:
A
Abstract:
PURPOSE: To form a connecting element for easily adjusting the connection of resonators in a radio frequency filter. CONSTITUTION: Connecting elements 21 are made of flexible conductive strips, and formed symmetrically to the normal direction. That is, they are formed symmetrically to a longitudinal axis extending to the longitudinal direction passing through the central point of strips 21. The strips are surface-mounted on pads 33, 35, and 36, or soldered into a hole formed in a circuit board 25 so that they can be fixed to at least the two parts of top ends in the longitudinal direction to the circuit substrate, and placed at points isolated from a resonance coil 34 and the surface of the circuit substrate 25. One 33 of those fixed positions are grounded, and the other 36 is connected with the signal conductor of a filter. This connection can be easily adjusted by bending the substrate to one side or both sides for the symmetrical axis.
Inventors:
TAPIO RETSUTEIRE
PERUTSUTEI PUURUNEN
SETSUPOO SARUMERA
YARUMO BARUTONEN
KARI ROOTANDERU
PERUTSUTEI PUURUNEN
SETSUPOO SARUMERA
YARUMO BARUTONEN
KARI ROOTANDERU
Application Number:
JP5627095A
Publication Date:
November 28, 1995
Filing Date:
March 15, 1995
Export Citation:
Assignee:
LK PRODUCTS OY
International Classes:
H01P7/00; H01P1/20; (IPC1-7): H01P1/20
Attorney, Agent or Firm:
Takashi Ishida (3 others)