CN203521564U

CN203521564U - Ultra-wideband microstrip phase shifter

Info

Publication number: CN203521564U
Application number: CN201320627859.6U
Authority: CN
Inventors: 吴天昊; 张隆; 邓强标
Original assignee: Jiangsu Hengxin Technology Co Ltd
Current assignee: Jiangsu Hengxin Technology Co Ltd
Priority date: 2013-10-12
Filing date: 2013-10-12
Publication date: 2014-04-02
Anticipated expiration: 2023-10-12

Abstract

The utility model relates to an ultra-wideband microstrip phase shifter. The ultra-wideband microstrip phase shifter is a phase shifter which feeds through coupling of printed boards and changes the electrical downtilt of an antenna through changing a phase position. The phase shifter mainly includes a phase shifting sheet (1) and a phase-shifting coupling sheet (2). The two faces of the phase-shifting sheet (1) are covered with copper and green oil layers, wherein one face is covered with two arc microstrip lines and a main feed line (14). Four feed points including a feed point I (10), a feed point II (11), a feed point III (12) and a feed point IV (13) on the phase-shifting sheet (1) are connected with radiators of the antenna respectively. One face of the phase-shifting coupling sheet (2) is covered with copper and a green oil layer and a circuit which is covered with copper is a microstrip power divider (3) which is coupled with the two microstrip lines and the main feed line (14) on the phase-shifting sheet (1). The ultra-wideband microstrip phase shifter is simple in structure and a single phase shifter is capable of controlling phase positions of a whole line of antenna radiators at the same time; and in-band loss is small, use frequency band is wide and torque is small in a phase-shifting process.

Description

A kind of super broad frequency micro-band phase shifter

Technical field

The utility model relates to a kind of electrical tilt antenna parts, relates to a kind of phase shifter, especially a kind of super broad frequency micro-band phase shifter.

Background technology

Phase shifter is the critical component that is applied to electric tuning antenna of base station, can change the scanning angle of electrical tilt antenna wave beam, i.e. angle of declination.By adjusting the phase shift position of phase shifter, change the coverage of antenna beam, so the performance of phase shifter there is conclusive effect to the performance of antenna for base station.

Extensive use of TD-SCDMA grid at present, and supporting antenna is conventional TD smart antenna, in order to be easier to Cell Site Placement, reduces the cost of building a station, from conventional TD smart antenna to TD electric regulating intelligent antenna is excessively inexorable trend.

The operation principle of electrical tilt antenna is by electronics mode, to change the phase place of each radiating element of conllinear array antenna, thereby realize the variation of compound direction figure greatest irradiation point, the automatic effect of adjusting antenna beam inclination angle of realization.Thereby phase shifter is the critical component of electrical tilt antenna.

In prior art, phase shifter is generally by changing wire electrical length and changing the wave beam electrical down-tilting that conductive medium realizes antenna for base station.Two kinds of methods can change the phase place of each radiating element indirectly.

And the power division network of antenna is commonly PCB printed circuit board, thus phase plate to choose printed circuit board be best mode.

Utility model content

Technical problem to be solved in the utility model is, overcomes the shortcoming of prior art, provides a kind of simple in structure, bandwidth, moment little, reasonable in design, the simply super broad frequency micro-band phase shifter of assembling process.

In order to solve above technical problem, the utility model provides a kind of super broad frequency micro-band phase shifter, comprise phase plate and phase shift couple sheet, phase plate is concentric and covering mutually with phase shift couple sheet, phase plate is double-sided copper-clad, wherein the copper circuit that covers in one side is two concentric circular arc microstrip lines and a main feeder, one end of main feeder is the main feed point of phase shifter, another end points of main feeder overlaps with the center of circle of two circular arc microstrip lines, and the main feed point both sides of phase plate are arranged with feedback point I, feedback point II, feedback point III and feedback point IV successively; Phase shift couple sheet is that one side covers copper, and covering copper circuit is a microstrip power divider, and microstrip power divider contacts completely with two microstrip lines and main feeder on phase plate, and respectively with Coupling point I, Coupling point II and the coupling of Coupling point III.

Further restriction scheme of the utility model is: phase plate and phase shift couple sheet cover copper face and be all coated with green oil layer, and phase plate and phase shift couple sheet coupling feed.

Further, the microstrip power divider on phase shift couple sheet comprises two in order to realize the power splitter of feeding network power division, wherein between two power splitters, is provided with to realize two matching sections of power splitter coupling.

Further, the main feed point on phase plate is connected with connector cable, and feedback point I, feedback point II, feedback point III and feedback point IV are connected respectively the corresponding radiator of antenna.

The beneficial effects of the utility model are: the running orbit of (1) phase shift couple sheet of the present utility model is in the arc-shaped, a phase shifter has a main feed point and four minutes feedback points, feedback in four minutes some port is connected with corresponding unit oscillator, one column unit oscillator only connects same phase shifter, and the mode that other many producers have adopted a plurality of phase shifters to move is therefore more simple and practical simultaneously.(2) when changing Downtilt, a column unit oscillator only connects same phase shifter, so moment is little.And due to when changing Downtilt, a column unit oscillator only connects same phase shifter, is therefore with internal loss very little.(3) covering on copper circuit of phase plate and phase shift couple sheet applies green oil, plays anti-oxidation effect, extends the phase shifter life-span.(4) the utility model integrated design, has not only realized the adjustable of phase place, and the integrated power division of whole network, makes the simplicity of design of network, and service band is wide.

Accompanying drawing explanation

Fig. 1 is front view of the present utility model.

Fig. 2 is three-dimensional exploded view of the present utility model.

Fig. 3 is overall schematic after the utility model is installed.

Embodiment

embodiment 1

The present embodiment provides a kind of super broad frequency micro-band phase shifter, and structure as shown in Figure 1 and Figure 2, mainly comprises phase plate 1 and phase shift couple sheet 2 two large divisions, also comprises cavity 16 and plastic buckle 15.

Phase plate 1 and phase shift couple sheet 2 meet concentric requirement, and phase plate 1 and phase shift couple sheet 2 covering mutually face-to-face, phase plate 1 and phase shift couple sheet 2 coupling feeds.Phase plate 1 is printed circuit board, its double-sided copper-clad and coating green oil, wherein on the surface of one side, be covered with two concentric circular arc microstrip lines and a main feeder 14, one end of described main feeder 14 is the main feed point 9 of phase shifter, another end points of described main feeder 14 overlaps with the center of circle of two circular arc microstrip lines, is also provided with feedback point I 10, feedback point II 11, feedback point III 12, feedback point IV 13 on described phase plate 1; Phase shift couple sheet 2 covers copper and applies green oil for one side, cover and on copper face, be covered with microstrip power divider 3, microstrip power divider 3 on phase shift couple sheet 2 comprises two power splitters, to realize the power division of feeding network, between wherein said two power splitters, utilizes two matching sections to realize the coupling of power splitter.Two microstrip lines on phase plate 1: microstrip line I 4, microstrip line II 5 contact completely with the microstrip power divider 3 on phase shift couple sheet 2, and the part being coupled: Coupling point I 6, Coupling point II 7, Coupling point III 8 accomplish to overlap completely as far as possible.By main feed point 9 and connector cable, present some I 10, a feedback point I 11, a feedback I 12, a feedback point I 13, respectively at corresponding radiating element, be connected respectively.Mobile phase shift couple sheet 2 within the limits prescribed, the phase place that realizes network changes, thus it is adjustable to realize the angle of declination of antenna.

Thereby the mode that this phase shifter adopts change length of transmission line to change phase place realizes the electrical tilt of antenna.Transmission line adopts dielectric constant 2.2, the microstrip line of thickness 1mm, and earth terminal adopts the form of plated-through hole.A phase shifter has a main feed point and four minutes feedback points, can control the phase difference of a row oscillator, and phase plate turns around, electrical tilt can change between 2-12 degree, mobile phase shift couple sheet 2 within the limits prescribed, the phase place that realizes network changes, thus it is adjustable to realize the angle of declination of antenna.

In addition to the implementation, the utility model can also have other execution modes.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection range of the utility model requirement.

Claims

1. a super broad frequency micro-band phase shifter, comprises phase plate (1) and phase shift couple sheet (2), and described phase plate (1) is concentric and covering mutually with phase shift couple sheet (2), it is characterized in that:

Phase plate (1) is double-sided copper-clad, wherein the copper circuit that covers in one side is two concentric circular arc microstrip lines and a main feeder (14), one end of described main feeder (14) is the main feed point (9) of phase shifter, another end points of described main feeder (14) overlaps with the center of circle of two circular arc microstrip lines, and main feed point (9) both sides of described phase plate (1) are arranged with feedback point I (10), feedback point II (11), feedback point III (12) and feedback point IV (13) successively;

Phase shift couple sheet (2) covers copper for one side, covering copper circuit is a microstrip power divider (3), described microstrip power divider (3) contacts completely with two microstrip lines and main feeder (14) on phase plate (1), and respectively with Coupling point I (6), Coupling point II (7) and Coupling point III (8) coupling.

2. super broad frequency micro-band phase shifter as claimed in claim 1, is characterized in that: described phase plate (1) covers copper face with phase shift couple sheet (2) and is all coated with green oil layer, and phase plate (1) and phase shift couple sheet (2) coupling feed.

3. super broad frequency micro-band phase shifter as claimed in claim 1 or 2, it is characterized in that: the microstrip power divider (3) on described phase shift couple sheet (2) comprises two in order to realize the power splitter of feeding network power division, between wherein said two power splitters, be provided with to realize two matching sections of power splitter coupling.

4. super broad frequency micro-band phase shifter as claimed in claim 1 or 2, it is characterized in that: the main feed point (9) on described phase plate is connected with connector cable, feedback point I (10), feedback point II (11), feedback point III (12) are connected respectively the corresponding radiator of antenna with feedback point IV (13).