High frequency filter having a coaxial structure

A high-frequency filter, coaxial structure technology, applied in waveguide-type devices, circuits, connecting devices, etc., can solve the problems of high mechanical consumption, error-prone disadvantage, etc., achieve passive intermodulation suppression, low manufacturing cost, large The effect of adjusting the range

Active Publication Date: 2016-07-27
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, this known solution requires high mechanical expenditure
In connection with this, the resulting error-proneness has also proven to be a disadvantage
Finally, the solutions known so far also suffer from significant disadvantages in terms of passive intermodulation

Method used

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  • High frequency filter having a coaxial structure
  • High frequency filter having a coaxial structure
  • High frequency filter having a coaxial structure

Examples

Experimental program
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Embodiment Construction

[0042] A preferred embodiment according to the invention of a high-frequency filter, in particular a high-frequency bandpass filter, is shown in FIG. 1 in a schematic horizontal cross-section.

[0043] The press according to the invention is shown here in a schematic top view Figure 1a Example of (cover removed) and according to Figure 1b A three-loop microwave filter composed of coaxial TEM resonators is shown schematically in lateral axial section. In other words, the exemplary embodiment shows a single-loop high-frequency filter 1 in the form of three coaxial structures with three resonators. It can be seen here that a single-loop high-frequency filter or single resonator 1 in the form of a coaxial structure consists in principle of an electrically conductive outer conductor 3, an inner conductor 4 arranged concentrically or coaxially with the outer conductor and a base 5 or consists of these parts , the conductive outer conductor 3 and the conductive inner conductor 4 a...

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PUM

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Abstract

An improved high frequency filter is characterized by among others the following features: an adjusting or sliding device (24, 25) is provided for changing the coupling bandwidth, the adjusting or sliding device (24, 25) comprises at least one adjusting means (251), on which at least one coupling element (27) is fastened, the coupling element (27) is assigned to a coupling opening (19') relative to a resonator (1; 1a, 1b, 1c, 1d), and the coupling element (27) is arranged in the resonator (1; 1a, 1b, 1c, 1d) relative to an assigned coupling opening (19') such that by shifting the adjustment or sliding device (24, 25), the adjustment means (25') and thus the coupling element (27) can be shifted between two extreme positions in which the coupling element (27) is positioned or shifted entirely or partially into the coupling opening (19') or entirely or partially out of the coupling opening (19') or away from the coupling opening (19').

Description

technical field [0001] The invention relates to a high-frequency filter in the form of a coaxial structure, in particular a high-frequency filter in the form of a high-frequency directional filter or a band-pass filter or a band-cut filter (such as a duplex directional filter). Background technique [0002] In radio equipment, for example in the field of mobile radio, a common antenna is often used for transmitting and receiving signals. Here, different frequency ranges are used for sending and receiving signals, and the antenna must be suitable for sending and receiving in both frequency ranges. To separate the transmitted signal from the received signal therefore requires suitable frequency filtering with which the transmitted signal is transmitted on the one hand from the transmitter to the antenna and on the other hand the received signal is transmitted from the antenna to the receiver. In order to separate the transmitted signal from the received signal, high-frequency...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H01P1/205H01P5/04
CPCH01P1/2053H01P5/04H01P1/207
InventorF·罗特莫泽J·尼塔
OwnerTELEFON AB LM ERICSSON (PUBL)