CN202550045U

CN202550045U - Double-layer public port cavity combiner

Info

Publication number: CN202550045U
Application number: CN2012201058449U
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: 2012-11-21
Anticipated expiration: 2022-03-20

Abstract

The utility model discloses a double-layer public port cavity combiner. The double-layer public port cavity combiner comprises three connectors, a plurality of resonant cavities, six tap lines, a cavity frame, a plurality of adjustable screws, two cover plates and a cavity partition board, wherein the cavity partition board and the cavity frame are integrated; the frame is partitioned into an upper cavity body and a lower cavity body; the resonant cavities are respectively and symmetrically fixed above and below the cavity partition board; the adjustable screws are screwed into the metal cover plates through screw threads and extend into the resonant cavities; one adjustable screw extends into each resonant cavity; all adjustable screws are not in contact with the resonant cavities; one connector is connected to one side of the frame, and the other two connectors are connected to the other side of the frame; and an inner core of each connector is connected with two tap lines, and the other ends of the two tap lines are respectively connected with the resonant cavities close to the connector. According to the double-layer public port cavity combiner, a double-layer multichannel public port structure is adopted, so that part of ports are omitted, the overall structure is compact, and the functions of shunting and combining of different channels in communication systems of the same standard are realized more easily.

Description

A kind of double-deck comm port cavity mixer

Technical field

The utility model relates to the mobile communication equipment technical field, relates 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 utility model provides a kind of double-deck comm port cavity mixer, and each port of the utility model 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 purpose of the utility model realizes through following technical scheme: a kind of double-deck comm port cavity mixer, and 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 beneficial effect of the utility model is: the utility model 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 utility model 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 utility model 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.The innovation of the utility model 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); 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.