CN206516739U

CN206516739U - A kind of low frequency base station duplexer

Info

Publication number: CN206516739U
Application number: CN201720046053.6U
Authority: CN
Inventors: 李培
Original assignee: Dongguan Easy Times Communication Co Ltd
Current assignee: Dongguan Easy Times Communication Co Ltd
Priority date: 2017-01-16
Filing date: 2017-01-16
Publication date: 2017-09-22
Anticipated expiration: 2027-01-16

Abstract

The utility model discloses a kind of low frequency base station duplexer, including cavity, CDMA paths, GSM paths, the first resonant column, the second resonant column are provided with cavity, first resonant column is arranged on inside GSM paths by screw, second resonant column is arranged on inside CDMA paths by screw, the utility model novel in structural design, resonant column is processed using copper product, resonant column by screw on cavity, therefore with insertion loss is low, structure makes full use of, power that is lightweight, bearing is high, the features such as assemble simple.

Description

A kind of low frequency base station duplexer

Technical field

The utility model is related to technical field of communication equipment, specially a kind of low frequency base station duplexer.

Background technology

Duplexer is alien frequencies two-way radios, and the key fitment of trunk desk, its effect is will to launch and receive signal to be isolated, Ensure to receive and transmitting can be while normal work.It is made up of the bandstop filter of two groups of different frequencies, it is to avoid the machine is sent out Penetrate signal and be transferred to receiver；General duplexer is made up of six bandstop filters (trapper), and each resonance is in transmitting and receives Frequency.Receiving terminal filter resonance prevents that transmission power from sealing in receiver in tranmitting frequency, and transmitting terminal filter resonance is in connecing Receive frequency.Some duplexers do not mark transmitting and receiving terminal and only mark LOW and HIGH, such as certain duplexer LOW=450, HIGH= 460, represent that LOW ends can couple 450,000,000 receiver HIGH ends and couple 460,000,000 emitters, LOW ends connection 450,000,000 can also be launched Machine, HIGH ends couple 460,000,000 receivers, and transmitting-receiving frequency can be overturned and used, but can not connect the machine of tranmitting frequency 460 and put double The one end of work device 450,000,000 is in order to avoid damage radio station and duplexer；The operating frequency range of duplexer should not be narrower than radiophone sheet The operating frequency range of body.Bandwidth generally described in us, refers to that radiophone mixes the input tape of receiver after duplexer The output bandwidth of wide and emitter.For duplexer, it is the bandwidth of rejection of two equivalent bandstop filters, rather than takes Certainly in pass band width.It is frequency range of two stopbands in certain attenuation, as big from its frequency response curve Family is known, VHF, UHF radiophone now itself, the high frequency input bandwidth of receiver typically all can in more than 5MHz, The high frequency output bandwidth of emitter is in more than 10MHz.That is, radiophone in itself high frequency input, output bandwidth all It is relatively wide, therefore it is required that the bandwidth of duplexer should also have certain width, to overcome user when declaring frequency because band Wide problem and the trouble caused.

At present, alien frequencies duplexer is almost used in each different system in the microwave passive industry of the communications field In, popular 3G network technology, high ferro covering private network technology etc. are especially compared recently, duplexer all act as essential angle Color.Duplexer is the key fitment of alien frequencies two-way radios, trunk desk, and it is that will launch and receive signal to be isolated that it, which is acted on, it is ensured that Reception and transmitting can be while normal works, it is to avoid the machine transmission signal is transferred to receiver.Existing CDMA duplexers life Produce cost high, install complicated, it is impossible to meet the demand in market.

Utility model content

The purpose of this utility model is to provide a kind of low frequency base station duplexer, to solve what is proposed in above-mentioned background technology Problem.

To achieve the above object, the utility model provides following technical scheme：A kind of low frequency base station duplexer, including chamber CDMA paths, GSM paths, the first resonant column, the second resonant column are provided with body, the cavity, first resonant column passes through spiral shell Nail is arranged on inside GSM paths, and second resonant column is arranged on inside CDMA paths by screw, and the cavity side is installed First out splice going splice, opposite side installs the second out splice going splice and the 3rd out splice going splice.

It is preferred that, the second out splice going splice, the first out splice going splice of the CDMA paths end respectively with duplexer are connected, institute Threeth input adapter, first out splice going splice of the GSM paths end respectively with duplexer is stated to connect.

It is preferred that, in addition to electric capacity, the electric capacity is on cavity.

It is preferred that, air dielectric is filled with first resonant column, the second resonant column.

It is preferred that, first resonant column, the second resonant column are fixed in cavity by screw.

Compared with prior art, the beneficial effects of the utility model are：The utility model novel in structural design, resonant column is adopted Processed with copper product, resonant column by screw on cavity, therefore with insertion loss is low, structure makes full use of, weight Gently, the power that bears is high, the features such as assemble simple.

Brief description of the drawings

Fig. 1 is the utility model structural representation.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment obtained, belongs to the scope of the utility model protection.

Referring to Fig. 1, the utility model provides a kind of technical scheme：A kind of low frequency base station duplexer, including cavity 1, institute State and CDMA paths 2, GSM paths 3, the first resonant column 4, the second resonant column 5 are provided with cavity 1, first resonant column 4 passes through spiral shell Nail is arranged on the inside of GSM paths 3, and second resonant column 5 is arranged on the inside of CDMA paths 2, the side of cavity 1 by screw First out splice going splice 6 is installed, opposite side installs the second out splice going splice 7 and the 3rd out splice going splice 8；Also include electric capacity 9, the electric capacity 9 are arranged on cavity 1.

In the present embodiment, the end of CDMA paths 2 the second out splice going splice 7 respectively with duplexer, the phase of the first out splice going splice 6 Even, the 3rd out splice going splice 8, the first out splice going splice 6 of the end of GSM paths 3 respectively with duplexer are connected.

In the present embodiment, air dielectric is filled with the first resonant column 4, the second resonant column 5；First resonant column 4, second Resonant column 5 is fixed in cavity 1 by screw.

Resonant column uses H59 copper materials, electroplate；Insulator uses poly- four used on input adapter and out splice going splice PVF.Joint is filled using air dielectric；To cause matching for 50 ohm of joint and cavity formation.

The utility model novel in structural design, resonant column is processed using copper product, and resonant column is by screw in cavity On, therefore with the features such as insertion loss is low, structure makes full use of, power that is lightweight, bearing is high, assembling is simple.

While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art, It is appreciated that these embodiments can be carried out in the case where not departing from principle of the present utility model and spirit a variety of changes, repaiies Change, replace and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.

Claims

1. a kind of low frequency base station duplexer, including cavity (1), it is characterised in that：In the cavity (1) provided with CDMA paths (2), GSM paths (3), the first resonant column (4), the second resonant column (5), first resonant column (4) are arranged on GSM paths by screw (3) the inside, second resonant column (5) is arranged on inside CDMA paths (2) by screw, and cavity (1) side installs the One out splice going splice (6), opposite side installs the second out splice going splice (7) and the 3rd out splice going splice (8).

2. a kind of low frequency base station duplexer according to claim 1, it is characterised in that：CDMA paths (2) end point Not be connected with the second out splice going splice (7), the first out splice going splice (6) of duplexer, the GSM paths (3) end respectively and duplex 3rd out splice going splice (8) of device, the first out splice going splice (6) connection.

3. a kind of low frequency base station duplexer according to claim 1, it is characterised in that：Also include electric capacity (9), the electric capacity (9) it is arranged on cavity (1).

4. a kind of low frequency base station duplexer according to claim 1, it is characterised in that：First resonant column (4), second Air dielectric is filled with resonant column (5).

5. a kind of low frequency base station duplexer according to claim 1, it is characterised in that：First resonant column (4), second Resonant column (5) is fixed in cavity (1) by screw.