Arbitrary dual-frequency power divider based on right-left transmission line and its production method

A left-handed transmission line, composite left-handed technology, applied in waveguide-type devices, diversity/multi-antenna systems, electrical components, etc., can solve problems such as inability to work and large size of power dividers

Inactive Publication Date: 2007-12-05
INST OF ELECTRONICS CHINESE ACAD OF SCI
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  • Summary
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AI Technical Summary

Problems solved by technology

[0011] In order to solve the problem that the traditional power divider can only work at the fundamental frequency and its odd harmonic frequency, the length of the branch line is λ g /4, although its size is small, it cannot work under any dual frequency

Method used

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  • Arbitrary dual-frequency power divider based on right-left transmission line and its production method
  • Arbitrary dual-frequency power divider based on right-left transmission line and its production method
  • Arbitrary dual-frequency power divider based on right-left transmission line and its production method

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Embodiment Construction

[0059] The present invention will be described in detail below in conjunction with the accompanying drawings. It should be pointed out that the described embodiments are only considered for the purpose of illustration and not limitation of the present invention.

[0060] According to the first aspect of the present invention, specific embodiment 1 represents as follows:

[0061] According to the dual-frequency design idea proposed by Caloz, the left-handed transmission line is added to the right-handed transmission line to form a composite left-handed transmission line (CRLH), which can change the phase shift characteristics of the entire transmission line to achieve f at any two frequency points. 1 , f 2 , the phase shifts are 90 degrees and 270 degrees respectively, as shown in the CRLH curve in Figure 2. Applying this technology to the Wilkinson power divider, using composite left and right handed transmission lines to realize branch impedance transformation, can be design...

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Abstract

The invention publishes a random dual-frequency Wilkinson power division of fully based on the compound right-hand transmission line which includes three ports, four right hand transmission lines and two left hand transmission lines and the isolating resistor; the method steps include obtain the frequency ratio of the work frequency pots, establish the phase-shift value of transmission line, establish the port transmission line, establish the right hand transmission line, establish the left hand transmission line, and establish the isolating circuit. The invention prepared shrink type and the compact random dual-frequency power division of the double festival impedance conversion technology, overcomes the work flaw of the traditional power division only works on the odd number frequency multiplication, the branch line length can reduces to (lambda /4) Alpha below, satisfies the dual-frequency work at the same time has compact structure. The power division design is simple, the microwave plate and the primary device is easy to obtain, convenient for the processing. The invention power division can good satisfied the performance requirement on two work frequency place.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to an arbitrary dual-frequency Wilkinson power splitter based on a composite left-hand and right-hand transmission line. Background technique [0002] Based on the dual-frequency standard of modern wireless communication, in order to reduce the number of devices in the system, it is required that the devices used should meet the requirements of dual-frequency work as much as possible. Wilkinson power splitters are often used to feed antennas in communication systems, but traditional Wilkinson power splitters can only work at the fundamental frequency and its odd harmonic frequencies, while the current GSM wireless communication usually uses There are two working frequency bands of 900M and 1800M, so the traditional Wilkinson power divider can no longer meet the needs of modern communication. [0003] The traditional Wilkinson power divider structure is shown in Figure ...

Claims

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Application Information

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IPC IPC(8): H01P1/387H04B7/02
Inventor 刘慈香李芳
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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