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Microwave Transmission Assembly

A technology for assembling parts and components, applied in the direction of waveguide-type devices, electrical components, circuits, etc., can solve problems such as permanent damage to combiners, complex diagnostic systems, permanent damage to internal termination loads, etc.

Inactive Publication Date: 2015-08-12
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Permanent damage to the combiner and especially to the internally terminated load may occur
Also, determining the cause of such problems can be difficult and may require complex diagnostic systems

Method used

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  • Microwave Transmission Assembly
  • Microwave Transmission Assembly
  • Microwave Transmission Assembly

Examples

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Embodiment Construction

[0027] Directional filters are used to combine or split signals over a given frequency range or sub-band, and it is broadly contemplated herein to include reflection guards in directional filter assemblies to provide protection for internally terminated loads of the filters. figure 1 One embodiment of a contemplated directional filter assembly 10 is shown that includes a directional multiport filter circuit 12 configured as a combiner in a microwave assembly that multiplexes signals from two base stations onto a common port 14 superior. Specifically, the common port 14 is shown as a common antenna port, and the microwave signal in subband 1 is applied by the first base station RBS1 to the first input port 16, while the microwave signal in subband 2 is applied by the second base station RBS2. The second input port 18 .

[0028] As is known from directional filters, the directional filter assembly 10 directs the out-of-band signal to its internal output port, referred to as the...

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Abstract

According to one or more embodiments, a directional filter assembly (10) comprises a multi-port filter circuit (12) for combining or separating signals in specified pass-bands and an isolated port (20) having a resistive load (22), for absorbing out-of-band signals. The assembly further includes a reflective protection device (24) configured to protect the resistive load (22) from being overpowered by out-of-band signal power, based on being configured to reflect or not reflect the out-of-band signals in dependence on the level of out-of-band signal power. In at least one embodiment, the directional filter assembly is configured as a microwave transmission assembly, such as is used for combining signals from two or more base stations, for transmission from a common antennae assembly.

Description

technical field [0001] The present invention relates to directional filter assemblies which can be used to combine or separate signals in microwave transmission assemblies. More particularly, but not exclusively, the present invention relates to power dependent reflection protection that selectively reflects power away from a termination load of a directional filter assembly. Background technique [0002] Base stations for generating microwave signals are known in the field of mobile telephony. Such a base station is connected to an antenna for transmitting the signals generated by the base station to the mobile phone. [0003] Often multiple base stations are connected to a single antenna. Each base station may generate microwave signals at different frequencies and different modulation schemes, as is known in the art. In this case, each of the plurality of base stations is connected to an associated input port of the combiner. The combiner combines the signals from th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/213
CPCH01P1/213
Inventor B.弗兰聪J-E.伦德贝格R.约翰逊T.林德C.穆尼斯加西亚J.D.罗德斯
Owner TELEFON AB LM ERICSSON (PUBL)
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