CN208970716U - A kind of power splitter inhibiting phase dispersion - Google Patents

Abstract

The utility model provides a kind of power splitter for inhibiting phase dispersion, including microstrip line, isolation resistance, printed circuit board, lower chamber, upper cover plate, radio frequency connector, printed circuit board is set in lower chamber, microstrip line is printed on a printed circuit board, upper cover plate and lower chamber pass through the fixed lid dress of fastening screw, further include isolating bar and be set on printed circuit board isolation channel corresponding with isolating bar between microstrip line, isolation channel of the isolating bar on printed circuit board forms the isolation microstrip line.The isolating bar of the utility model both can be fixedly arranged on lower chamber or be plugged on lower chamber.Phase dispersion can effectively be reduced in such a way that microstrip line is isolated in isolating bar, especially for the biggish broadband power divider of wave band span, can significantly be reduced due to coupling bring phase dispersion.

Description

A kind of power splitter inhibiting phase dispersion

Technical field

The utility model relates to technology for radio frequency field more particularly to a kind of power splitters for inhibiting phase dispersion.

Background technique

With the rapid development of wireless communication, the requirement to radio communication is also higher and higher, the output of single microwave device Power has been difficult meet the needs of high power system, it is therefore desirable to realize system pair by power distribution using multiple devices The requirement of power.Power divider is referred to as power splitter, is a kind of common microwave passive component of radio-frequency front-end, it is mainly used for The distribution and synthesis of signal power are usually applied to frequency mixer, power amplification circuit, jammer, modem, phased array thunder Up in the various Microwave radio frequency systems such as antenna.

Existing power splitter is in order to control volume, size, and often the spacing very little between microstrip line makes to produce between microstrip line Coupling is given birth to, the phase dispersion for resulting in power splitter is larger.Phase dispersion refers to the inconsistency of phase under different frequency, frequency More the deviation of high phase will be bigger, and dispersion is bigger, and power splitter guarantees the phase of output port to export power branch The problem of position is consistent, often has ignored phase dispersion.Especially for the biggish broadband power divider of wave band span, reduce function The phase dispersion of point device is an important performance indexes of power splitter.

Summary of the invention

The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of power splitter for inhibiting phase dispersion, It include: microstrip line, isolation resistance, printed circuit board, lower chamber, upper cover plate, radio frequency connector, the printed circuit board is set to In the lower chamber, the microstrip line is printed on the printed circuit board, and the upper cover plate and the lower chamber pass through fastening The fixed lid dress of screw；Further include isolating bar and is set to corresponding with the isolating bar between microstrip line on the printed circuit board Isolation channel, isolation channel of the isolating bar on the printed circuit board form the isolation microstrip line.

Preferably, the isolating bar is fixedly arranged on the lower chamber, with the cavity of resorption body by integral forming.

Preferably, the lower chamber is provided with socket, the isolating bar passes through the isolation channel on the printed circuit board With the socket grafting of the lower chamber.

Preferably, the isolating bar uses metal material, preferably aluminum material.

Preferably, the isolating bar and microstrip line have remained spacing distance, wherein lateral separation distance is d1, is indulged It is d2,0.3mm < d1 < 1mm, 0.3mm < d2 < 1mm to spacing distance.

The beneficial effects of the utility model

The utility model by the way that isolating bar is arranged in lower chamber, be provided between the microstrip line lines of printed circuit board with The corresponding isolation channel of lower chamber isolating bar, isolating bar pass through the isolation channel of printed circuit board, will be spaced between the lines of microstrip line Get up.Using isolating bar be isolated microstrip line by the way of effectively reduce the phase dispersion of power splitter, especially for wave band across Biggish broadband power divider is spent, can effectively be reduced due to coupling bring phase dispersion.

Detailed description of the invention

Fig. 1, the structural schematic diagram of the utility model；

Fig. 2, the utility model do not install the perspective view structure chart of upper cover plate additional；

In figure, 1- lower chamber, 2- printed circuit board, 3- isolation channel, 4- isolating bar, 5- radio frequency connector, 6- microstrip line, 7- Isolation resistance.

Content is embodied

Embodiment 1

It is as depicted in figs. 1 and 2: the utility model include microstrip line 6, isolation resistance 7, printed circuit board 2, lower chamber 1, on Cover board (not shown), radio frequency connector 5, isolating bar 4 and isolation channel 3；Printed circuit board 2 is set in lower chamber 1, micro-strip Line 6 is printed on printed circuit board 2, and isolation channel 4 is set between the microstrip line 6 on printed circuit board 2, and isolating bar 4 corresponds to Isolation channel 3 is fixedly arranged on lower chamber, and isolation channel 3 of the isolating bar 4 on printed circuit board 2 forms the isolation microstrip line 6. Upper cover plate and lower chamber 1 pass through the fixed lid dress of fastening screw.

Particularly, isolating bar 4 uses metal material, preferably aluminum material.Because isolating bar 4 is fixedly arranged on lower chamber 1, every From item 4 and lower chamber 1 be one at type, therefore the material of the material of isolating bar 4 and lower chamber 1 is the same, and lower chamber 1 Generally it is made of aluminium alloy, to save cost consideration, Gu the material of isolating bar 4 is more suitble to using aluminum material, on the other hand, Other metals such as copper, iron make isolating bar can also be with, but from isolation effect and weight for, relatively more using aluminum isolating bar It is applicable in.

Particularly, isolating bar 4 and microstrip line 6 have remained spacing distance, and wherein lateral separation distance is d1, between longitudinal direction Gauge is from for d2,0.3mm < d1 < 1mm, 0.3mm < d2 < 1mm.Isolating bar 4 cannot connect with microstrip line 6, otherwise can be short-circuit, , will be very high to the technique requirement of printed circuit board 2 if spacing distance is 0.1mm if keeping the spacing distance of very little, it can increase Addition sheet；And isolating bar 4 is interposed between microstrip line 6, if farther out apart from microstrip line 6, distance just must between 6 line of microstrip line and line It must widen, and then the volume of power splitter must be increased, for power splitter more than 1 point of 16 tunnel, power splitter can be made Increase no small volume, therefore a certain range of restriction is made to the spacing distance of isolating bar 4 to microstrip line 6, both ensure that function The size and volume for dividing device, can also play preferable isolation effect, and by repeatedly debugging, distance d1 design in lateral separation is existed Between 0.3mm and 1mm, longitudinal gap distance d2 is designed between 0.3mm and 1mm, the most properly.

Embodiment 2

Another embodiment of the utility model, isolating bar 4 and lower chamber 1 are the mode of grafting, in lower chamber 1 Be provided with socket (not shown), for the grafting of isolating bar 4, isolating bar 4 pass through isolation channel 3 on printed circuit board 2 with The socket grafting of lower chamber 1.The flexibility that this mode is installed is higher, for the low frequency function point of phase dispersion index no requirement (NR) Device, lower chamber 1 can reuse after removing isolating bar 4, in addition, isolating bar 4 individually produces, can replace the system of isolating bar 4 Make material, such as the user relatively low for phase dispersion index request, isolating bar 4 can use tagger, more save Cost.But the needs of embodiment 2 increase socket on lower chamber 1, will increase the production of lower chamber 1 for embodiment 1 Cost.

Power splitter is an input multiple-channel output, common are one point of 1 point of 2 tunnel, 1 point of 3 tunnel, 1 point of 4 tunnel, 1 point of 8 tunnel, 1 point 16 tunnels etc., the utility model are suitable for any 1 point of multi-path power divider, particularly with broadband more than 1 point of 8 big tunnel of wave band span Power splitter, the inhibitory effect of phase dispersion is clearly.

Embodiments described above is only a part of the embodiment of the present invention, instead of all the embodiments.Based on this The embodiment of utility model, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment should be fallen within the protection scope of the utility model.

Claims (5)

1. it is a kind of inhibit phase dispersion power splitter, including microstrip line, isolation resistance, printed circuit board, lower chamber, upper cover plate, Radio frequency connector, the printed circuit board are set in the lower chamber, and the microstrip line is printed on the printed circuit board, The upper cover plate and the lower chamber are filled by the fixed lid of fastening screw, it is characterised in that: are further included isolating bar and be set to Isolation channel corresponding with the isolating bar on the printed circuit board between microstrip line, the isolating bar pass through the printing electricity Isolation channel on the plate of road forms the isolation between microstrip line.

2. power splitter according to claim 1, it is characterised in that: the isolating bar is fixedly arranged on the lower chamber, with institute State cavity of resorption body by integral forming.

3. power splitter according to claim 1, it is characterised in that: the lower chamber is provided with socket, and the isolating bar is worn Cross the socket grafting of the isolation channel and the lower chamber on the printed circuit board.

4. power splitter according to claim 1 to 3, it is characterised in that: the isolating bar uses aluminum material.

5. power splitter according to claim 1 to 3, it is characterised in that: the isolating bar is protected always with microstrip line Hold spacing distance, wherein lateral separation distance is d1, and longitudinal gap distance is d2,0.3mm < d1 < 1mm, 0.3mm < d2 < 1mm。