CN102623778A

CN102623778A - Cavity combiner with double-layered communal port

Info

Publication number: CN102623778A
Application number: CN2012100741705A
Authority: CN
Inventors: 叶强; 张苏南; 罗昌桅
Original assignee: China Jiliang University
Current assignee: China Jiliang University
Priority date: 2012-03-20
Filing date: 2012-03-20
Publication date: 2012-08-01
Anticipated expiration: 2032-03-20
Also published as: CN102623778B

Abstract

The invention discloses a cavity combiner with a double-layered communal port. The cavity combiner comprises three connectors, a plurality of resonant cavities, six tap lines, a cavity framework, a plurality of adjustable screw bolts, two cover plates and a cavity partition board, wherein the cavity partition board is integrally formed with the cavity framework and divides the framework into an upper cavity and a lower cavity; the resonant cavities are respectively and symmetrically fixed on the upper and the lower surfaces of the cavity partition board; the adjustable screw bolts are screwed into the metal cover plate, extend into the resonant cavities in a one-to-one correspondence manner, and are not in contact with the resonant cavities; while one connector is connected with one side of the framework, other two connectors are connected with the other side; and the inner core of each connector is connected with two tap lines, the other ends of the two tap lines are respectively connected with the resonant cavities close to the connector. According to the cavity combiner provided by the invention, a double-layered multichannel communal port structure is adopted, so some ports are avoided, the integral structure is compact, and the shunting/combing function of different channels of the same format in a communication system is easier to realize.

Description

Double-deck comm port cavity mixer

Technical field

The present invention relates to the mobile communication equipment technical field, relate in particular to a kind of four frequency cavity mixers of double-deck comm port.

Background technology

Fast development along with mobile communication; Demand to having high selectivity and comprehensive mixer constantly increases; These devices are widely used in GSM and the base station, are used for signal in the comprehensive different radio frequency channel (from transmitter or antenna).In microwave frequency band; Have the coaxial cavity of transmission zero or the mixer of comb line filter composition very application prospects is arranged, at present, most of coaxial cavity mixers all are to advance 1 with individual layer N to go out the N+1 port organization; This cavity body structure has high Q value; Advantages such as power is big, and the insertion loss is little, and the outer inhibition of band is good.Yet single layer structure is being used for the more close communication system of channel ratio, and when closing road port common cavity is arranged, the cavity topological structure arrangement of the mixer more complicated that can seem, and with respect to double-decker, relatively cost of idleness.

Summary of the invention

For the topological structure that overcomes individual layer cavity mixer is arranged complicacy, port reaches problems such as cost height more.The invention provides a kind of double-deck comm port cavity mixer, each port of the present invention all is equivalent to one and closes the crossing, and at the bottom of the shared one deck of two-layer up and down filter chamber, makes overall structure more compact.

The objective of the invention is to realize through following technical scheme: a kind of double-deck comm port cavity mixer, it comprises: three connectors, some resonant cavitys, six roots of sensation tap line, chamber frame, some adjusting screws, two cover plates and cavity dividing plate; Wherein, said cavity dividing plate and chamber frame are integrally formed, and framework is separated into two cavitys up and down, and several resonant cavitys are fixed on the top and bottom of cavity dividing plate respectively symmetrically; Two metal cover boards cover on the upper and lower surfaces of chamber frame also fixing respectively; Some adjusting screws are threaded into metal cover board and stretch in the resonant cavity, stretch into an adjusting screw in each resonant cavity, and adjusting screw does not all contact with resonant cavity; One side of framework connects a connector, and opposite side connects two connectors, and three connectors all communicate with the cavity up and down of framework; The cavity dividing plate has three holes in the place that framework is connected with three connectors; The connector inner core of each connector connects two tap lines; The other end of these two tap lines passes the hole respectively, links to each other with two resonant cavitys near the top and bottom of the cavity dividing plate of connector.

The invention has the beneficial effects as follows: the present invention has adopted double-deck multichannel comm port structure; This structure can save a part of port; Also be convenient to the arrangement of each road cavity body structure in the mixer; Compact overall structure, and more be prone to realize in the communication system with the shunt of different channels in the standard and close the road function.

Description of drawings

Fig. 1 is the front inner chamber figure of cavity mixer;

Fig. 2 is the reverse side inner chamber figure of cavity mixer;

Fig. 3 is the vertical view of the overall appearance figure of cavity mixer;

Fig. 4 is the upward view of the overall appearance figure of cavity mixer;

Fig. 5 is the front view of the overall appearance figure of cavity mixer;

Fig. 6 is the rearview of the overall appearance figure of cavity mixer;

Fig. 7 is the left view of the overall appearance figure of cavity mixer;

Fig. 8 is the cutaway view of the double-deck public tap of one of them port of cavity mixer;

Fig. 9 is the embodiment port one, the S comparative bid parameter of simulation between 2 and measured result;

Figure 10 is the embodiment port one, the S comparative bid parameter of simulation between 3 and measured result;

Among the figure, connector 1, resonant cavity 2, tap line 3, chamber frame 4, adjusting screw 5, fixed screw 6, cover plate 7, connector inner core 8, cavity dividing plate 9.

Embodiment

Like Fig. 1-shown in Figure 8, the double-deck comm port cavity of the present invention mixer comprises: three connectors 1, some resonant cavitys 2, six roots of sensation tap line 3, chamber frame 4, some adjusting screws 5, two cover plates 7 and cavity dividing plates 9.

Wherein, Cavity dividing plate 9 is integrally formed with chamber frame 4, and framework 4 is separated into two cavitys up and down, and several resonant cavitys 2 are fixed on the top and bottom of cavity dividing plate respectively symmetrically; The internal structure of upper chamber is as shown in Figure 1, and the internal structure of lower cavity is as shown in Figure 2; Two metal cover boards 7 cover respectively on the upper and lower surfaces of chamber frame 4 and by fixed screw 6 to be fixed; Some adjusting screws 5 are threaded into metal cover board 7 and stretch in the resonant cavity 2, stretch into an adjusting screw 5 in each resonant cavity 2, and adjusting screw 5 does not contact with resonant cavity 2; One side of framework 4 connects a connector 1; Opposite side connects two connectors 1; Three connectors 1 all communicate with the cavity up and down of framework, and cavity dividing plate 9 has three holes in the place that framework is connected with three connectors 1, and the inner core 8 of each connector connects two tap lines 3; The other end of these two tap lines 3 passes the hole respectively, links to each other with two resonant cavitys 2 near the cavity dividing plate top and bottom of connector.

The course of work of the present invention is following: the length of regulating adjusting screw 5 can change resonance frequency, thereby can suppress spurious signal, through needed signal, is fixed by nut after adjusting the length of adjusting screw 5.Two the connector input two paths of signals that indicate IN of signal from Fig. 3 after four shunt, close the road signal from connector 1 output that indicates OUT again.Innovation of the present invention is double-deck comm port structure as shown in Figure 8; Signal gets into respectively after the connector that indicates IN gets into up and down the two-layer band cavity body structure; Be after two-way has the signal of communication entering input of spurious signal, to be four tunnel filtered signals of communication from what close road port output.

Practical implementation is following: insert mixer in the wire communication; GSM1800-Smart (1725-1750MHz; 1820-1845MHz) (1760-1785MHz, 1855-1880MHz) two the connector inputs indicating IN of signal from Fig. 3 are through closing the road signal from the connector output that indicates OUT after the filtering of four shunt for & GSM1800-Suncel.Emulation and measured result are like Fig. 9, shown in 10; Test and simulation curve are more identical; S21 among Fig. 9 and the S31 parameter among Figure 10 two transmission zeros separately all-below the 30dB, the return loss of four frequency ranges also-below the 20dB, and the isolation that is higher than 80dB is also arranged at GSM800 and 3G communications band; Satisfied Modern Communication System to filter miniaturization, low Insertion Loss, highly suppress, requirement that isolation is high, good application prospects is arranged.

Claims

1. double-deck comm port cavity mixer; It is characterized in that it comprises: three connectors (1), some resonant cavitys (2), six roots of sensation tap line (3), chamber frame (4), some adjusting screws (5), two cover plates (7) and cavity dividing plate (9) etc.; Wherein, said cavity dividing plate (9) is integrally formed with chamber frame (4), and framework (4) is separated into two cavitys up and down, and several resonant cavitys (2) are fixed on the top and bottom of cavity dividing plate (9) respectively symmetrically; Two metal cover boards (7) cover respectively on the upper and lower surfaces of chamber frame (4) and fix; Some adjusting screws (5) are threaded into metal cover board (7) and stretch in the resonant cavity (2), stretch into an adjusting screw (5) in each resonant cavity (2), and adjusting screw (5) does not all contact with resonant cavity (2); One side of framework (4) connects a connector (1), and opposite side connects two connectors (1), and three connectors (1) all communicate with the cavity up and down of framework; Cavity dividing plate (9) has three holes in the place that framework is connected with three connectors (1); The connector inner core (8) of each connector (1) connects two tap lines (3); The other end of these two tap lines (3) passes the hole respectively, links to each other with two resonant cavitys (2) near the top and bottom of the cavity dividing plate (9) of connector.