CN109411860B

CN109411860B - One-to-five hybrid power divider

Info

Publication number: CN109411860B
Application number: CN201811512132.7A
Authority: CN
Inventors: 张仕伦; 王健
Original assignee: Tianjin 764 Communication and Navigation Technology Corp
Current assignee: Tianjin 764 Communication and Navigation Technology Corp
Priority date: 2018-12-11
Filing date: 2018-12-11
Publication date: 2023-06-30
Anticipated expiration: 2038-12-11
Also published as: CN109411860A

Abstract

The invention relates to a one-to-five hybrid power divider, which comprises a first medium substrate, a second medium substrate, a third medium substrate, an isolation resistor and a grounding resistor, wherein a metal layer is mixed with a microstrip line by adopting a strip line to form a planar coupler, an upper coupler, a lower coupler, a one-to-two power divider, an input port, a first output port, a second output port, a third output port, a fourth output port and a fifth output port, the first medium substrate and the third medium substrate are used for clamping the second medium substrate in the middle and the metal layer is alternately arranged, and the second medium substrate and the third medium substrate are fixed together by a fastener to form coupling connection. The phased array scanning antenna has the advantages of simple structure, easiness in processing and low cost, is used for a phased array scanning antenna, and has the advantages of large bandwidth, good in-band flatness, high isolation, low standing-wave ratio, easiness in phase control and debugging, and the working frequency band is 962-1213MHz.

Description

One-to-five hybrid power divider

Technical Field

The invention relates to a power divider, in particular to a one-to-five hybrid power divider.

Background

Due to the needs of military and business, the requirements on technical indexes of the power divider are increasingly higher, such as frequency bandwidth, high in-band flatness, high isolation, low standing wave ratio, easy debugging, small size and the like, and in order to meet the requirements, the design of the easily-realized hybrid power divider meeting the requirements is required. The difficulty of the power divider is to meet the requirements of wide frequency band, high in-band flatness, high isolation, low standing wave ratio, simple structure, easy processing and low cost.

Disclosure of Invention

In view of the problems existing in the prior art, the invention provides a one-to-five hybrid power divider which works at 962 MHz-1213 MHz and can be used for phased array antennas and the like, and the specific technical scheme is that the one-to-five hybrid power divider comprises a first substrate plate, a second substrate plate and a third substrate plate, and is characterized in that: the first substrate plate, the second substrate plate and the third substrate plate are substrate plates with metal layers, the third substrate plate is the same as the second substrate plate, the shape is the same, the thickness is the same, the metal layers of the first medium substrate are designed by mixing strip lines and microstrip lines, a planar coupler, an upper coupler, a lower coupler, a one-to-two power divider, an input port, a first output port, a second output port, a third output port, a fourth output port, a fifth output port and a transmission line are formed, and the input port is connected with the first output port by the transmission line; the isolation resistor is fixed between the e and e1 line segments of the one-to-two power divider, the two grounding resistors are respectively fixed on the w line segment port and the d line segment port of the planar coupler, the third grounding resistor is arranged on the first dielectric substrate (11), the metal layer of the second dielectric substrate (14) is designed by mixing strip lines and microstrip lines, the input end of the one-to-two power divider (3) forming the first dielectric substrate (11) is coupled with the third grounding resistor (13) for transmission, and when the isolation resistor is arranged on the first dielectric substrate (11), the isolation resistor is overlapped with the transmission line partition plate connected with the input port (4) and the first output port (5), one end of the isolation resistor is coupled with the input end of the one-to-two power divider (3), the metal layer of the third dielectric substrate (15) is a whole-surface metal layer and is used as a ground wire, and the first dielectric substrate (11) and the third dielectric substrate (15) clamp the second dielectric substrate (14) in the middle and the metal layers are alternately arranged and fixed together by a fastener to enable the isolation resistor and the isolation resistor to be parallel and compact.

The line widths and the line lengths of the metal layer strip line and the microstrip line are respectively a line width of 2.02mm and line length of 62.89mm; b line width 2.22mm, line length 40.78mm; c line width 2.22mm and line length 5mm; d line width is 2.22mm, and line length is 5mm; e line width 1.25mm, line length 4mm; e1 line width 1.25mm, line length 4mm; f line width 2.22mm, line length 8mm; g line width 2.22mm, line length 14.17mm; f+g line width 2.22mm and line length 18.2mm; h, line width is 2.22mm, and line length is 8mm; h1 line width is 2.22mm, and line length is 8mm; i line width 1.25mm, line length 6.64mm; i1 line width 1.25mm, line length 6.64mm; j line width 1.25mm, line length 6.75mm; j1 line width 1.25mm, line length 6.75mm; k is 1.25mm in width and 14mm in length; k1 linewidth 1.25mm, and linelength 14mm; l line width is 1.25mm, and line length is 6.75mm; l1 line width 1.25mm, line length 6.75mm; m line width 2.22mm, line length 20mm; n line width 1.07mm, line length 25mm; o line width 0.87mm, line length 3.2; p line width is 0.87mm, line length is 21mm; q line width 2.22mm, line length 3mm; r line width 0.97mm, line length 34.2; s line width 2.02mm, line length 7.585mm; t line width 2.22mm, line length 8.89mm; u line width is 2.22mm, line length is 11.89mm; v linewidth 2.22mm, length 40.78mm; w line width is 2.22mm, line length is 5mm; x line width is 2.22mm, and line length is 3.95mm; y line width is 2.22mm, line length is 3.7mm; the z line width is 2.22mm and the line length is 5mm.

The frequency band applicable to the one-to-five hybrid power divider is 962 MHz-12136 MHz.

The invention has the technical effects of wide frequency band, high in-band flatness, high isolation, low standing wave ratio, easy debugging, simple structure, easy processing and low cost, and can work in the frequency band of 962 MHz-1213 MHz.

Drawings

FIG. 1 is a schematic circuit diagram of the present invention;

FIG. 2 is an exploded view of a dielectric substrate circuit of the present invention;

fig. 3 is a microstrip line marking diagram of the present invention;

FIG. 4 is a difference plot of the present invention;

FIG. 5 is a phase diagram of the present invention;

fig. 6 is a standing wave ratio diagram of the present invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying drawings.

As shown in fig. 1 to 6, the invention is applied to 962 MHz-1213 MHz, the first dielectric substrate 11, the second dielectric substrate 14 and the third dielectric substrate 15 are polytetrafluoroethylene substrate plates, the dielectric constant is 2.55, the thickness of the plates of the second dielectric substrate 14 and the third dielectric substrate 15 is 0.787mm, the thickness of the plates of the first dielectric substrate 11 is 0.254mm, the metal layer is made of copper material, and the surface is plated with gold.

The metal layer of the first dielectric substrate 11 adopts a mixed design of strip lines and microstrip lines to form a planar coupler 1, an upper coupler 2, a lower coupler 2, a one-to-two power divider 3, an input port 4, a first output port 5, a second output port 6, a third output port 7, a fourth output port 8, a fifth output port 9 and a transmission line, and the input port 4 is connected with the first output port 5 by the transmission line; the isolation resistor 12 is fixed between the e and e1 line segments of the one-to-two power divider 3, the two grounding resistors 13 are respectively fixed at the w line segment port and the d line segment port of the planar coupler 1, one grounding resistor 13 is positioned on the first dielectric substrate 11, the metal layer of the second dielectric substrate 14 is designed by mixing strip lines and microstrip lines, the input end of the one-to-two power divider 3 forming the first dielectric substrate 11 is coupled with the third grounding resistor 13 for transmission, and when the isolation resistor is arranged on the first dielectric substrate 11, the isolation resistor coincides with a transmission line partition plate connected with the input port 4 and the first output port 5, one end of the isolation resistor is coupled with the input end of the one-to-two power divider 3, the metal layer of the third dielectric substrate 15 is an integral metal layer and is used as a ground wire, the first dielectric substrate 11 and the third dielectric substrate 15 clamp the second dielectric substrate 14 in the middle, and the metal layers are alternately placed, and fixed together by fasteners, so that the isolation resistor and the isolation resistor are parallel and compact.

The line width and the line length of the metal layer strip line and the microstrip line adopt the following theoretical and empirical formulas:

Z0

Z3=

Z4=

Z5=

Rk=Z0

θ=π/2

wherein: p1 represents the power of the output port 1, P2 represents the power of the output port 2, e represents the amplitude ratio of the two output ports, Z0 represents the nominal impedance, Z1 represents the 1 st order impedance of the output port 1, Z2 represents the 2 nd order impedance of the output port 1, Z4 represents the 1 st order impedance of the output port 2, Z5 represents the 2 nd order impedance of the output port 2, Z3 represents the matching impedance of the connection input terminal, and Rk represents the isolation resistance.

The following data were calculated:

a line width is 2.02mm, and line length is 62.89mm; b line width 2.22mm, line length 40.78mm; c line width 2.22mm and line length 5mm; d line width is 2.22mm, and line length is 5mm; e line width 1.25mm, line length 4mm; e1 line width 1.25mm, line length 4mm; f line width 2.22mm, line length 8mm; g line width 2.22mm, line length 14.17mm; f+g line width 2.22mm and line length 18.2mm; h, line width is 2.22mm, and line length is 8mm; h1 line width is 2.22mm, and line length is 8mm; i line width 1.25mm, line length 6.64mm; i1 line width 1.25mm, line length 6.64mm; j line width 1.25mm, line length 6.75mm; j1 line width 1.25mm, line length 6.75mm; k is 1.25mm in width and 14mm in length; k1 linewidth 1.25mm, and linelength 14mm; l line width is 1.25mm, and line length is 6.75mm; l1 line width 1.25mm, line length 6.75mm; m line width 2.22mm, line length 20mm; n line width 1.07mm, line length 25mm; o line width 0.87mm, line length 3.2; p line width is 0.87mm, line length is 21mm; q line width 2.22mm, line length 3mm; r line width 0.97mm, line length 34.2; s line width 2.02mm, line length 7.585mm; t line width 2.22mm, line length 8.89mm; u line width is 2.22mm, line length is 11.89mm; v linewidth 2.22mm, length 40.78mm; w line width is 2.22mm, line length is 5mm; x line width is 2.22mm, and line length is 3.95mm; y line width is 2.22mm, line length is 3.7mm; the z line width is 2.22mm and the line length is 5mm.

The invention has the following advantages:

(1) The one-to-five hybrid power divider adopts the design of the strip line and the microstrip line, can realize the technical index requirement in a smaller volume, and has the advantages of small loss, wide application range and convenient design. By adjusting the line width and the line spacing, changing the resistance value of the isolation resistor and controlling impedance matching in position,

(2) The one-to-five hybrid power divider adopts various coupling modes, such as planar coupling and up-and-down coupling, and effectively improves in-band flatness, isolation and standing-wave ratio.

(3) The one-to-five hybrid power divider has the characteristics of simple structure, easy processing and low cost, and can meet more severe technical requirements and production requirements.

(4) The one-to-five hybrid power divider can be used as a basic design, and more complex and higher-requirement power dividers can be obtained according to the calculation method if needed.

Claims

1. The utility model provides a divide five hybrid power divider, includes first dielectric substrate (11), second dielectric substrate (14), third dielectric substrate (15), and first dielectric substrate (11), second dielectric substrate (14), third dielectric substrate (15) are the dielectric substrate of taking the metal level, and third dielectric substrate (15) are the same, thickness the same with second dielectric substrate (14) shape, its characterized in that: the first-fifth hybrid power divider further comprises a planar coupler (1), an upper coupler (2), a lower coupler (3) and a ground wire, wherein the planar coupler (1), the lower coupling wire of the upper coupler (2) and the lower coupling wire of the lower coupler (3) are arranged on the upper surface of a first medium substrate (11), the upper coupling wire of the upper coupler (2) and the lower coupler (2) are arranged on the upper surface of a second medium substrate (14), the ground wire is an integral metal layer arranged on the upper surface of a third medium substrate (15), one end of an input transmission wire of the planar coupler (1) is connected with an input port (4), the input transmission wire is respectively coupled with a first coupling wire and a second coupling wire on two sides, one end of the first coupling wire is connected with a first grounding resistor, the other end of the first coupling wire is connected with a fifth output port (9), one end of the second coupling wire far away from the first grounding resistor is connected with a second grounding resistor, the other end of the second coupling wire is connected with a fourth output port (8), the first coupling wire (6) is arranged on the whole surface of the upper surface of the third medium substrate (15), one end of the input transmission wire is connected with the second coupling wire (12) and the other end of the first coupling wire is connected with the upper coupling wire of the third coupling wire (3), the second dielectric substrate (14) is fixed on the first dielectric substrate (11), the projection of the upper coupling line on the first dielectric substrate (11) is overlapped with the lower coupling line, the other ends of the first grounding resistor, the second grounding resistor and the third grounding resistor are connected with the metal layer of the third dielectric substrate (15), the first dielectric substrate (11), the second dielectric substrate (14) and the third dielectric substrate (15) are fixed together through fasteners, and the working frequency range of the one-to-five hybrid power divider is 962 MHz-1213 MHz.