Cavity filter, radio-frequency zooming-out equipment, signal receiving-transmitting device and tower top amplifier

A cavity filter and low-noise amplifier technology, applied in the field of communication radio frequency, can solve the problems of limited coupling area of ​​the coupling disc, large filter area, changes in radio frequency parameters, etc., achieve good consistency, optimize cavity space, position and Dimensionally stable effect

Inactive Publication Date: 2013-06-12
ANHUI TATFOOK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The inventors of the present invention have found that the structure of the structural capacitor in the prior art needs to add a section of space to accommodate the structural capacitor in the filter, and the greater the coupling amount is, the longer the structural capacitor needs to be, and the occupied filter area is larger. Big
[0006] In the way of coupling signals by the coupling plate, due to the limited coupling area of ​​the coupling plate, the coupling amount is limited; and one en

Method used

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  • Cavity filter, radio-frequency zooming-out equipment, signal receiving-transmitting device and tower top amplifier
  • Cavity filter, radio-frequency zooming-out equipment, signal receiving-transmitting device and tower top amplifier
  • Cavity filter, radio-frequency zooming-out equipment, signal receiving-transmitting device and tower top amplifier

Examples

Experimental program
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Effect test

Embodiment 1

[0036] The coupling body is sleeved on the outer surface of the resonant rod, and the coupling body is an annular body. The shape of the coupling body can be changed into different shapes according to the shape of the resonant rod, and the cross section can be circular, square, hexagonal, etc., which does not constitute a limitation to the present invention. Such as Figure 4 As shown, the coupling body can be a closed ring body 400, which can be processed by die-casting or machining. Such as Figure 5 As shown, the coupling body can also be a ring body 500 with a notch 501 on the side wall, and the ring body with the notch can be realized by stamping, and the cost is relatively low. In addition, if the coupling body has a notch, the elasticity of the ring body with the notch can be used to directly sleeve the coupling body at a suitable position on the outer surface of the resonant rod. The ring-shaped coupling body can also be fixed on the resonant rod by other technical ...

Embodiment 2

[0039] In this embodiment, the coupling body is a patch attached to the outer surface of the resonating rod, and the patch can be glued or fixed on the outer surface of the resonating rod in other forms. The shape of the patch can be rectangular, square, circular, etc., and the area of ​​the patch can be determined according to the required coupling amount. The shape and area of ​​the patch do not limit the present invention. The coupling body in the form of a patch is easy to process, low in cost, and easy to fix. The connector can be integrally formed with the patch, or welded on the patch.

Embodiment 3

[0041] In this embodiment, the coupling body is a metal layer covering the insulating dielectric layer. The metal layer can be implemented by spraying or electroplating. First, an insulating dielectric layer is coated on a suitable position on the outer surface of the resonating rod, and then a metal layer is coated on the outer surface of the insulating dielectric layer. Connectors for transmitting signals can be soldered to the metal layer. This method can make the structure inside the cavity filter cavity smoother, and the radio frequency index is better.

[0042] The embodiment of the present invention also provides a radio remote device, including: including a radio frequency transceiver module, a power amplifier module and the cavity filter described in all the above embodiments, the radio frequency transceiver module and the power amplifier The modules are connected, and the power amplifier module is connected with the filter. When the RRU works in the downlink time s...

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PUM

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Abstract

The invention discloses a cavity filter, and radio-frequency zooming-out equipment, a signal receiving-transmitting device and a tower top amplifier comprising the cavity filter. The cavity filter provided by the invention comprises a cavity and a resonant rod in the cavity, wherein the outer surface of the resonant rod is provided with a coupling body; an insulating medium layer is formed between the coupling body and the resonant rod; and the coupling body is provided with a connecting piece for transmitting signals. The cavity filter provided by the invention has the dual functions of coupling signals and resisting lightning, is simple in structure, has a larger coupling amount, and contributes to comparatively improving the cavity space arrangement.

Description

technical field [0001] The invention relates to the field of communication radio frequency, and mainly relates to a cavity filter, radio remote equipment including the cavity filter, a signal transceiver and a tower top amplifier. Background technique [0002] As a frequency selection device, filters are widely used in the field of communication, especially in the field of radio frequency communication. In the base station, the filter is used to select the communication signal and filter out the clutter or interference signal outside the frequency of the communication signal. [0003] In cavity filters with lightning protection requirements, structural capacitors are usually added to the connectors of the filter. The so-called structural capacitors replace capacitive components with a specific form of mechanical structure to play the same role as capacitive components. role, such as figure 1 As shown, the existing structural capacitor 100 includes two rods and an insulatin...

Claims

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Application Information

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IPC IPC(8): H01P1/205H04B1/38
Inventor 杨绍春
Owner ANHUI TATFOOK TECH CO LTD
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