CN2618308Y

CN2618308Y - Multiple frequency merger for mobile communication

Info

Publication number: CN2618308Y
Application number: CN 03225008
Authority: CN
Inventors: 李谋武
Original assignee: Taishida Science & Technology Co Ltd Shenzhen City
Current assignee: Taishida Science & Technology Co Ltd Shenzhen City
Priority date: 2003-04-07
Filing date: 2003-04-07
Publication date: 2004-05-26
Anticipated expiration: 2013-04-07

Abstract

The utility model relates to a multi-frequency combiner for mobile communication, which comprises a tank 10 provided with a plurality of interfaces 11 corresponding to a plurality of mobile communicating systems of different modes and a common antennae port 12, wherein, a plurality of independent chambers 20 separately connecting the interfaces are arranged inside the tank and the chambers which belong to a multilevel resonator; the tank is also provided with a plurality of regulating screws 50 extended from the outside into the tank to regulate the inductance value. The chambers 20 comprise a first chamber 21, a second chamber 22 and a third chamber 23 which respectively correspond to GSM, DCS and CDMA. The utility model solves the problems of the coverage of different operators and different modes of mobile communicating systems over the same large construction, which reduces the interference among the invariant modes of signals and has the advantages of broad working frequency band, little inserting abrasion, small standing wave, high degree of inhibition beyond the band, large power capacity, good intermodulation index, and other advantages.

Description

The mobile communication multiplefrequency mixer

Technical field

The utility model relates to device for mobile communication, particularly relates to the mobile communcations system signal of compatible a plurality of operators of a kind of energy and multiple standard, can carry out indoor signal to heavy construction and cover, and improve the mobile communication multiplefrequency mixer of indoor signal quality.

Background technology

At present, China's mobile communication development rapidly, surge along with the mobile phone user, in heavy constructions such as conference and exhibition center, exhibition center, airport, subway, hotel, office building, the use of mobile phone is increased, and owing to the shielding reason of fabric structure itself and the ping-pong or the island effect of high building, this type of place often becomes blind area or the very poor zone of signal quality that network signal covers, and the intensive use and the low-quality communication signal of mobile phone form sharp-pointed contradiction.On the other hand, the mobile communcations system of China mainly comprises CDMA800, GSM900, the GSM1800 of GSM900, GSM1800, CDMA1900 and the CHINAUNICOM of China Mobile at present, and they relate to three operators and three kinds of standards.In the existing structure because the covering and the distribution apparatus of mobile communcations system that can compatible above-mentioned three kinds of standards are not set, it also is the major reason that causes signal difference, and because the resource-constrained in the heavy construction, make every kind of standard of each operator all build respectively the indoor movable signal covering system of a cover become impossible.

Summary of the invention

The utility model is intended to address the above problem, the mobile communication of mobile communication signal compatibility in the same indoor distribution apparatus multiplefrequency mixer of a plurality of standards of a plurality of operators to simplify the installing engineering amount, can be reduced cost and provide a kind of, save resource, and improve functional reliability.

For achieving the above object, the utility model provides a kind of mobile communication multiplefrequency mixer, this mixer has a casing 10, casing is provided with corresponding to a plurality of interfaces 11 of the mobile communcations system of a plurality of different systems and a common antenna port one 2, be provided with a plurality of separate cavitys 20 that link to each other with described interface respectively in the casing, this cavity is the multistage resonant chamber, also is provided with a plurality of adjustment screw 50 that being used in the casing regulate inductance value that extend into from the outside on the casing.

Cavity 20 comprises first cavity 21, second cavity 22 and the 3rd cavity 23 that corresponds respectively to GSM, DCS, CDMA, and wherein second cavity is the multistage resonant chamber that is formed by cavity wall and central dividing plate 221; First cavity is the multistage resonant chamber that is roughly U-shaped that is arranged at second cavity outside, between two resonant cavitys of therein certain Metallic rod trapper 30 is housed; The 3rd cavity is the multistage resonant chamber that is formed by cavity wall and central dividing plate 231, between two resonant cavitys of therein certain U-shaped metal wire trapper 40 is housed.

Adjustment screw 50 is horizontally disposed with along the fore-and-aft direction of casing.

Good effect of the present utility model is, the signal that it efficiently solves the mobile communcations system of different operators and different systems covers the problem of same heavy construction, owing to be provided with a cavity body filter corresponding to each standard, and the shared antenna of a plurality of cavity body filters, thereby can effectively reduce phase mutual interference between each standard signal, guaranteed enough receive-transmit isolations.Characteristics such as it is wide that this multiplefrequency mixer has working band, and the insertion loss is little, and standing wave is little, is with outer inhibition degree height, and power capacity is big, and the intermodulation index is good.And because its volume is little, therefore compact conformation has simplified the installing engineering amount greatly, has reduced cost significantly, has saved resource, and has improved the reliability of device work.

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is the vertical view of Fig. 1.

Embodiment

Consult Fig. 1～2, mobile communication of the present utility model has a rectangular box 10 with multiplefrequency mixer, the top of casing is provided with a plurality of interfaces 11 and a common antenna port one 2, in this example, interface 11 comprises GSM interface 111, DCS interface 112 and CDMA interface 113, and they can be respectively be connected with the mobile communcations system of the different systems of different operators.As Fig. 1, in casing 10, be provided with three separate cavitys 20 that link to each other with described interface respectively, this cavity comprises first cavity 21 corresponding to GSM, corresponding to second cavity 22 of DCS and corresponding to the 3rd cavity 23 of CDMA, wherein second cavity is the multistage resonant chamber that is formed by cavity wall and central dividing plate 221, is six grades of resonant cavitys in this example.First cavity is the nine grades of resonant cavitys that are roughly U-shaped that are arranged at second cavity outside, a Metallic rod trapper 30 respectively is housed between the 3rd resonant cavity therein and the 5th resonant cavity and between the 6th resonant cavity and the 8th resonant cavity, be used to strengthen the signal coupling, trapper 30 is fixed in second cavity outside.The 3rd cavity is nine grades of resonant cavitys that formed by cavity wall and central dividing plate 231, a U-shaped silver-coated copper wire trapper 40 respectively is housed between the 4th resonant cavity therein and the 6th resonant cavity and between the 7th resonant cavity and the 9th resonant cavity, be used to strengthen the signal coupling, trapper 40 is fixed on central dividing plate 231 and the cavity side plate.As Fig. 2, on casing 10, also be provided with a plurality of adjustment screw 50 that extend into from the outside in the casing, this adjustment screw is horizontally placed in each cavity along the fore-and-aft direction of casing, is used to regulate inductance value.Common antenna port one 2 (ANT) is located at the top of casing 10, is used for the output of each road signal.

As shown in Figure 1, the mobile communication signal of different systems is entered in the multistage resonant chamber that is isolated from each other by three interfaces respectively, is exported by same antenna interface after multistage coupling filtering.

Claims

1, a kind of mobile communication multiplefrequency mixer, it is characterized in that, it has a casing (10), casing is provided with corresponding to a plurality of interfaces (11) of the mobile communcations system of a plurality of different systems and a common antenna port (12), be provided with a plurality of separate cavitys (20) that link to each other with described interface respectively in the casing, this cavity is the multistage resonant chamber, also is provided with a plurality of adjustment screw (50) that being used in the casing regulate inductance value that extend into from the outside on the casing.

2, mobile communication multiplefrequency mixer according to claim 1, it is characterized in that, described cavity (20) comprises first cavity (21), second cavity (22) and the 3rd cavity (23) that corresponds respectively to GSM, DCS, CDMA, and wherein second cavity is the multistage resonant chamber that is formed by cavity wall and central dividing plate (221); First cavity is the multistage resonant chamber that is roughly U-shaped that is arranged at second cavity outside, between two resonant cavitys of therein certain Metallic rod trapper (30) is housed; The 3rd cavity is the multistage resonant chamber that is formed by cavity wall and central dividing plate (231), between two resonant cavitys of therein certain U-shaped metal wire trapper (40) is housed.

3, mobile communication multiplefrequency mixer according to claim 1 is characterized in that, described adjustment screw (50) is horizontally disposed with along the fore-and-aft direction of casing.