CN202503090U - Media mixer - Google Patents

Abstract

The utility model relates to a media mixer. The media mixer comprises a plurality of media filters 1, 2...n, and a plurality of signal channels 1, 2...m. The signals of a same frequency range in the signal channels 1, 2...m pass through a same corresponding media filter. According to the utility model, the processing that the signals of a same frequency range in different signal channels pass through a same media filter changes the traditional one-to-one or one-to-many structure form of signal channels and media filters into a many-to-one structure form which saves the space and signal wires of the mixer and improves the utilization rate of the signal wires.

Description

The medium mixer

Technical field

The utility model relates to a kind of medium mixer, belongs to the communicator technical field.

Background technology

In practical applications, need the C net of 800MHZ and two kinds of frequencies of G net of 900MHz be closed road output.Adopt mixer, can make a cover indoor distributed system work in CDMA frequency range and GSM frequency range simultaneously.And for example in radio antenna system, (like 145MHZ and 435MHZ) input/output signals of several kinds of different frequency ranges closed the road through mixer after, be connected with the radio station with a feeder line, this has not only practiced thrift a feeder line, has also avoided switching the trouble of different antennae.

In mixer is used, need to prove that base station or repeater signal feed-in mode are wireless in addition, its information source is a wide spectrum, therefore requires narrow passband in some occasion, to guarantee the pure of signal; The signal feed-in mode of mixer is a cable, and signal is directly taken from information source, and its information source is narrow spectrum signal.Like mixer CDMA/GSM passage, channel width is 800-960MHz, and when inserting a GSM CF signal, because information source is a CF signal, the feed-in mode is a cable, only has this CF signal in the passage, does not have other interference signal.Therefore the design of the fat pipe of mixer is feasible in practical application.

Its version of existing mixer is: the corresponding corresponding dielectric filter of one tunnel signalling channel or corresponding a plurality of dielectric filter are isolated from each other before wave filter; Like corresponding dielectric filter,, in the dielectric filter filtering, be difficult to the complete whole filterings of signal, and keep required signal like this institute's filtering owing to possibly comprise the signal of different frequency range in one tunnel signalling channel; Like a plurality of dielectric filters of correspondence, the utilization ratio of each dielectric filter is low, occupies more space, and holding wire is laid comparatively loaded down with trivial details.

The utility model content

The utility model is to above-mentioned defective, and purpose is to provide a kind of signal utilance that provides, and saves the medium mixer of space and holding wire.

The technical scheme that adopts of the utility model is for this reason: the utility model comprise a plurality of filtration different frequency ranges dielectric filter 1,2 ... N; Many barss passage 1,2 ... M, said signalling channel 1,2 ... Same frequency band signals among the m is through corresponding same dielectric filter.

The utility model has the advantages that: the utility model is handled the signal of unlike signal passage similar frequency bands through same dielectric filter; Classical signals passage and dielectric filter have been changed one to one or the version of one-to-many; Become many-to-one version; This kind version has been saved the space and the holding wire of mixer, has improved the utilance of holding wire.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the structural representation of traditional mixer.

Embodiment

With Fig. 1 is example, and the utility model comprises four frequency ranges: the logical dielectric filter 1,2,3,4 of band.Wherein dielectric filter 3 is at channel C H1, the last signal that passes through of CH2.Channel C H1 own, CH2 be the signal through self dielectric filter also.Its result is merged into three road signals to four road signals, has saved space and holding wire, has improved the holding wire utilance.

Claims (1)

1. the medium mixer is characterized in that, comprise a plurality of filtration different frequency ranges dielectric filter 1,2 ... N, many barss passage 1,2 ... M, said signalling channel 1,2 ... Same frequency band signals among the m is through corresponding same dielectric filter.

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