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Microwave power distributor made from lumped element left hand transmission line

A technology of left-handed transmission line and microwave power divider, which is applied in the direction of electrical components, waveguide devices, connecting devices, etc., to achieve the effect of easy manufacture, easy adjustment, and compact structure

Inactive Publication Date: 2005-03-02
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far no metamaterials have been used to make microwave power splitters

Method used

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  • Microwave power distributor made from lumped element left hand transmission line
  • Microwave power distributor made from lumped element left hand transmission line
  • Microwave power distributor made from lumped element left hand transmission line

Examples

Experimental program
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Effect test

Embodiment 1

[0025] see figure 2 . The present invention is composed of a common microstrip line 4 in the middle and left-chiral transmission lines 3 on both sides. The dielectric copper clad laminate is composed of a top layer copper foil, a dielectric 2 and a bottom layer copper foil 1. First, a common microstrip line 4 is carved in the middle of the top layer copper foil. Two left-chiral transmission lines 3 are engraved on the upper and lower sides of the common microstrip line 4 . The width of each line is 2.945 mm, the coupling length is 30 mm, and the interline gap 7 between the three lines is 0.2 mm. Then, on the two left-chiral transmission lines 3, the length of the microstrip line designed to be 5 millimeters (including the slit of 0.762 millimeters for the cell gap 8) according to the set requirements, the chip capacitor 6 loaded is 2.0 picofarads, and the The chip inductance 5 is 3.9 nanohenries. Finally, an MSN connector 9 is affixed to the top of every three ports on bo...

Embodiment 2

[0027] Embodiment 2 is a symmetrical structural form of a left-chiral transmission line 3 in the middle and ordinary microstrip lines 4 on both sides of the present invention. see image 3 . A left-handed transmission line 3 and two common microstrip lines 4 are engraved on the dielectric copper-clad board, and the parameters are the same as in the first embodiment. From Figure 6 It can be seen from the figure that the power divider can realize three equal output of ports B, C, and E in the range of 2.1-2.75 GHz.

[0028] Working principle: According to the transmission line principle, the lumped inductance-capacitance (L-C) element is loaded in the microstrip transmission line, the loaded capacitance is connected in series, and the loaded inductance is connected in parallel to form a left-handed microstrip transmission line. This material has specific properties for electromagnetic waves. Transmission characteristics, in the lower frequency range, the effective permittivi...

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Abstract

The invention relates to a microwave power distributor produced by left-hand transmission line with lumped element structure. It consists of common microtrip line and left-hand transmission line and has three-line six-port with balanced structure and coupling action. The interval between liens is fixed according design requirement. The left-hand transmission line is produced by using printing circuit board technology to design and make unit interval of pattern structure according with useage requirement on medium copper coated board, to fit paster capacitor and paster inductor in vertical through-hole. By the invention, very wide frequency band that more than 30 percent of center frequency band and power loss is less than 0.5 dB to realize power distribution of two-port bisection, three-port trisection or three-port arbitrary scale.

Description

technical field [0001] The invention relates to a microwave power splitter with a wide working frequency band and a three-line structure made of a novel left-handed microstrip transmission line material with a lumped element structure. Background technique [0002] The full name of microwave power divider is microwave power divider, which can be widely used in various microwave circuits and microwave instruments. At present, for microwave power splitters with small and medium power, most of them adopt stripline or microstrip line structure, and there are mainly microstrip three-port power dividers. For a lossless reciprocal three-port power divider, it is impossible for the three ports to match at the same time, so in order to achieve simultaneous matching of the three ports, it is designed as a non-reciprocal component (such as a microwave three-port circulator), or designed as a lossy Components (such as resistive power dividers). However, the des...

Claims

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Application Information

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IPC IPC(8): H01P5/00H01P5/12
Inventor 张冶文张东科赫丽陈鸿李宏强
Owner TONGJI UNIV
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