Cross-coupling control apparatus and RF cavity filter having the same

Abstract

The invention discloses a cross-coupling adjustment device and an RF cavity filter comprising the device. The device includes: a female coupling pin with a cavity formed inside and a first hole formed on one side; a male coupling pin inserted into the cavity formed in the female coupling pin and formed with a second hole corresponding to the first hole on one side hole; and the adjusting screw, which is inserted into the inside of the female coupling pin and the male coupling pin through the first hole and the second hole, and the first interface in the interface of the first hole and the first interface in the interface of the second hole 2 interface contact, at least a portion of the side surface is formed with a thread that repeats the groove and the protrusion. Wherein, by adjusting the rotation of the screw, the female coupling pin is moved in the first direction and the male coupling pin is moved in the second direction opposite to the first direction, thereby adjusting the coupling assembly formed by the combination of the female coupling pin and the male coupling pin physical length. The present invention has the advantage of being able to properly adjust the amount of cross-coupling.

Description

technical field [0001] RF cavity filter The present invention relates to a cross-coupling adjustment device and an RF cavity filter including the device, more particularly to a method for forming a notch for adjusting the edge (skirt) characteristic of the filter A cross-coupling adjustment device and an RF cavity filter including the device. Background technique [0002] The RF cavity filter is a device that forms multiple cavities inside the filter and only allows signals in the frequency band to pass through. It is used in places where high-power frequency signals are applied, such as base stations. [0003] figure 1 It is a plan view showing the internal structure of a general existing RF cavity filter. [0004] like figure 1 As shown, a general existing RF cavity filter includes an input terminal 100, an output terminal 102, a housing 104, a plurality of cavities 110, 112, 114, 116, 118, 120 defined by the housing 104 and the partition, accommodated in Multiple reso...

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Problems solved by technology

[0018] In order to solve this existing problem, a method of inserting a tuning screw at the installation position of the coupling rod to adjust the coupling amount has also been proposed, but this method cannot be substantially The method of changing the physical length of the coupling rod accurately, the coupling amount changed by the tuning screw is small, and there are difficulties in industrial application

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