CN205282627U

CN205282627U - Ware was divided to merit in 16 minutes

Info

Publication number: CN205282627U
Application number: CN201520815242.6U
Authority: CN
Inventors: 杜姗姗; 刘畅; 范仁钰; 安照辉
Original assignee: Chengdu Weipin Communication Technology Co Ltd
Current assignee: Chengdu Weipin Communication Technology Co Ltd
Priority date: 2015-10-20
Filing date: 2015-10-20
Publication date: 2016-06-01
Anticipated expiration: 2025-10-20

Abstract

The utility model provides a ware was divided to merit in 16 minutes, this ware was divided to merit in 16 minutes of includes that the merit divides ware cavity, merit to divide ware main part, merit to divide ware input, merit and divide ware output, base plate, the main part divides the ware to realize by 15 one fen two merits of the interconnected level four in inside. Cascaded every one minute two merit of three level four divide every section 14 wavelength impedance transformer of ware all to pass through the quintic bending, each every one minute two merit of level divide 50 ohm of matched output microstrip lines parts of ware all folding from top to bottom to its input direction respectively, 16 output port the microstrip line through folding bending still all point -blank, the installation of being convenient for. Ware was divided to merit in 16 minutes volume for the ware is divided to traditional merit is littleer, and performance index is better, simultaneously, the output of each branch road of ware was divided to merit in 16 minutes all keeps same sharp and microstrip line circuit structure is compacter, also makes the merit to divide the ware pleasing to the eye, and it is more convenient to use.

Description

A kind of 16 points of power splitters

Technical field

This utility model belongs to microwave device field, is especially applicable to power distribution when radar, antenna, satellite communication microwave transmission.

Background technology

Power divider, it is called for short power splitter, it is mainly used in microwave circuit field, a certain output is mainly assigned in each branch circuit by its effect according to a certain percentage, Wilkinson power splitter is widely used in satellite communication system and modern radar due to advantages such as its good phase characteristic are simple with design, as aerial array, the indispensable building block in the microwave circuit such as power combing. But along with the development of microwave radio circuit engineering, power splitter be it is also proposed higher requirement by microwave system, and number of branches is more, and volume is less. Although owing to 16 points of power splitter number of branches are many, but volume is big, and on making, produce difficulty by planar circuit form, can't well meet current demand.

At present, the method reducing power splitter volume is by 1/4 impedance transformer of each joint is bent. Notification number be 201020651798.3 Chinese patent " broadband 16 power splitter " disclose the technology of power splitter volume-diminished, it is that input port and the output port of the one-to-two power splitter of cascade are respectively arranged with a propagation and transformation section in sinusoidal rectangle wave band, article two, propagation and transformation section waveform is relative, thus reducing the volume of power splitter. But do so can be significantly increased the width of power splitter, more especially for number of branches, 16 points of power splitters of 15 one-to-two power splitter cascades effectively can not reduce the volume of power splitter. Meanwhile, between the microstrip line of adjacent one-to-two power splitter due to bending lean on close, it is easier to couple, cause that power splitter performance is bad.

Utility model content

The defect that this utility model content exists for background technology, it is provided that a kind of structure to 16 points of power splitter volume miniaturizations. This structure not only makes the number of branches of power splitter many, and volume is less, and application is wider, and the isolation of power splitter is high simultaneously, and loss is little.

The technical solution of the utility model is as follows:

A kind of 16 points of power splitters, including power splitter main body, power splitter input, 16 power splitter outfans, substrates, main body is realized by 15 one-to-two power splitters of interconnected level Four, it is characterized in that, wherein often joint 1/4 wavelength impedance transformers of each one-to-two power splitter of three level Four cascades repeatedly bends, and each one-to-two power splitter of described every one-level 50 ohm coupling output microstrip line part is curved folding.

Further, described 16 points of power splitter body design are on substrate, and 50 ohm that power splitter input and power splitter outfan are all standards mate microstrip line, and the material of substrate is high-performance poly tetrafluoroethene, and cavity of power distributor material is aluminum, lightweight.

Further, 16 points of described power splitter main bodys are realized by 15 one-to-two power splitters of interconnected level Four.

Further, the input of described one-to-two power splitter is connected with external input port, and two outfans are connected with two one-to-two power splitter inputs respectively, and cascade level Four successively is to there being 16 output ports.

Further, three joint 1/4 wavelength impedance transformers of the one-to-two power splitter of each described cascade are respectively by five radius bend corrugates.

Further, the one-to-two power splitter of each described cascade often to save 1/4 wavelength impedance transformers less than the radius of three the semicircle microstrip lines bent to both sides to the radius of the two of bent intermediate semicircle microstrip lines.

Further, the microstrip line of 50 ohm of coupling output parts of described one-to-two power splitter folds round about, fold up and down by first order one-to-two power splitter outfan micro-strip alignment input port direction, two power splitters making the second level lay respectively at surface and the underface of first order one-to-two power splitter, and the 3rd level Four also uses same manner.

Further, the microstrip line of 16 output ports of eight one-to-two power splitters of the fourth stage makes 16 output ports be in a straight line through bending conversion.

The beneficial effects of the utility model are:

1, this utility model adopts the mode of 1/4 wavelength impedance transformers by the one-to-two power splitter of every one-level and 50 ohm of output microstrip line part bending folds, reduces the volume of 16 points of power splitters, and microstrip circuitry structure is compacter.

2, this utility model adopts and each one-to-two power splitter is often saved 1/4 wavelength impedance transformers to the radius of the two of bent intermediate the semicircle microstrip lines mode less than the radius of three the semicircle microstrip lines bent to both sides, the Liang Ge branch making each one-to-two power splitter too closely will not produce coupling because of what bending was leaned on, improves the performance of power splitter.

3, this utility model bending conversion by the microstrip line to 16 output ports of power splitter so that 16 output ports all in same straight line and maintain output phase place unanimously, not only attractive in appearance but also easy to use.

Accompanying drawing explanation

Fig. 1 is 16 points of power splitter overall structure figure.

Fig. 2 is that 16 points of power splitter parts three save 1/4 wavelength impedance transformers bend mode enlarged drawing.

Fig. 3 is 16 points of power splitter part microstrip line folding mode enlarged drawings.

Fig. 4 is the return loss simulation curve figure of 16 points of power splitters.

Fig. 5 is the insertion loss simulation curve figure of 16 points of power splitters.

Fig. 6 is the isolation simulation curve figure of 16 points of power splitters.

Fig. 7 is 16 points of power splitter pictorial diagram actual measurement return loss plot figure.

Fig. 8 is 16 points of power splitter pictorial diagram actual measurement insertion loss curve charts.

Fig. 9 is 16 points of power splitter pictorial diagram actual measurement isolation curve charts.

Wherein, 1 is 16 points of cavity of power distributor, 2 is 16 points of power splitter main bodys, 3 is 16 points of total inputs of power splitter, and 4 is 16 points of total outfans of power splitter, and 5 is 16 points of power splitter substrates.

Detailed description of the invention

Below, the technical solution of the utility model is described in detail in conjunction with the accompanying drawings and embodiments in detail.

It is illustrated in figure 1 16 points of power splitter entirety microstrip circuit structure charts after volume miniaturization, including power splitter main body 2, power splitter input 3, power splitter outfan 4, substrate 5. This utility model example is realized 16 points of power splitters by internal level Four interconnection one-to-two power splitter, namely the input of one-to-two power splitter is connected with external input port, two outfans are connected with two one-to-two power splitter inputs respectively, level has been coupled to 16 output ports successively, wherein, each one-to-two power splitter has three joint 1/4 wavelength impedance transformers, and each joint impedance transformation node place isolation resistance connects.

Part three saves 1/4 wavelength impedance transformers bend mode enlarged drawing as shown in Figure 2. In this utility model example, three joint 1/4 wavelength impedance transformers of each one-to-two power splitter of the rear two-stage cascade of 15 one-to-two power splitters level Four interconnected carry out five bendings respectively and reduce the length that power splitter is overall, the radius of the semicircle microstrip line wherein bent to the radius of the semicircle microstrip line of bent intermediate than to both sides is little, this is because the spacing of two branch's microstrip lines is unsuitable too small, otherwise it is susceptible to coupling, improve only by adding resistance between two branch's microstrip lines, design loaded down with trivial details. By the bend mode of above-mentioned microstrip line, not only make power splitter need not sacrifice too much width and just can reduce length, even and if being not added with the isolation resistance isolation on 16 points of power splitters between aduncate microstrip line without producing impact.

In order to enable to reduce further the volume of power splitter, the microstrip line of all 50 ohm of coupling output parts of 15 one-to-two power splitters level Four interconnected folds round about, fold up and down by first order one-to-two power splitter outfan micro-strip alignment input port direction, make two power splitters of the second level lay respectively at surface and the underface of first order one-to-two power splitter. Use this kind of mode, then the microstrip line of the second level and each one-to-two power splitter output port of the third level is folded up and down to respective input port direction respectively, make the third level and the fourth stage on the same line. Finally, 16 outfans of the eight of the fourth stage one-to-two power splitters are folded to respective input port. The magnified partial view of concrete folding mode is as shown in Figure 3.

Further, by changing the phase equalization that the curved shape of microstrip line makes 16 outfans on same vertical line and keeps power splitter.

It is 0.8Ghz-2.5Ghz that method of the present utility model implements 16 points of power splitter operating frequencies of processing. The volume of 16 points of power splitters is 22.2cm*12.8cm*0.9cm.

16 points of power splitter material objects that Fig. 7, Fig. 8, Fig. 9 provide for this utility model, utilize the measured curve figure of vector network analyzer gained, as shown in the figure, 16 points of power splitter working bands are 0.8Ghz-2.5Ghz, below return loss-15.1dB, insertion loss scope-13.5dB arrives-15dB, isolation is all at below-22dB, if ignoring the impact owing to mismachining tolerance causes, measured curve and simulation curve Fig. 4, Fig. 5, Fig. 6 result are close, fully prove that 16 points of power splitter volumes are only small and better performances.

Claims

1. 16 points of power splitters, including power splitter main body, power splitter input, 16 power splitter outfans, substrates, main body is realized by 15 one-to-two power splitters of interconnected level Four, it is characterized in that, wherein often joint 1/4 wavelength impedance transformers of each one-to-two power splitter of three level Four cascades repeatedly bends, and each one-to-two power splitter of described every one-level 50 ohm coupling output microstrip line part is curved folding.

2. 16 points of power splitters according to claim 1, it is characterised in that three joint 1/4 wavelength impedance transformers of each described one-to-two power splitter are respectively by five radius bend corrugates.

3. 16 points of power splitters according to claim 1, it is characterized in that, the one-to-two power splitter of each described cascade often to save 1/4 wavelength impedance transformers less than the radius of three the semicircle microstrip lines bent to both sides to the radius of the two of bent intermediate semicircle microstrip lines.

4. 16 points of power splitters according to claim 1, it is characterized in that, the microstrip line of 50 ohm of coupling output parts of described one-to-two power splitter folds round about, fold up and down by first order one-to-two power splitter outfan micro-strip alignment input port direction, two power splitters making the second level lay respectively at surface and the underface of first order one-to-two power splitter, and the 3rd level Four also uses same manner.

5. 16 points of power splitters according to claim 1, it is characterised in that the microstrip line of 16 output ports of eight one-to-two power splitters of the fourth stage makes 16 output ports be in a straight line through bending conversion.