Wilkinson power divider with isolation frequency point aligned Chebyshev filtering characteristics and a preparation method thereof
A power divider, Chebyshev's technology, applied in waveguide-type devices, instruments, special data processing applications, etc., can solve the problem of the large size of the microstrip structure, and achieve the effect of expanding the scope of application, reducing the number of segments, and improving the isolation characteristics.
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[0084] The present invention also provides a preparation method of a Wilkinson power divider with the Chebyshev filter characteristics of isolation frequency point alignment, which is used to prepare the Wilkinson power divider with the Chebyshev filter characteristics of isolation frequency point alignment A power splitter, comprising the steps of:
[0085] Step 1, determine the order n of the transmission line in the power divider, the segment number m of the short wire and the connection position of the short wire according to the engineering needs, and obtain the circuit design model of the power divider;
[0086] Wherein, the segment number m of the short line and the connection position of the short line are determined according to the rules described above.
[0087] Step 2, performing dual-mode analysis on the design model to obtain the overall matrix of the transmission line and short wiring; and obtain the reflection function S of the design model 11 and the transfer...
Embodiment
[0093] In this embodiment, a Wilkinson power divider with the Chebyshev filter characteristic of isolation frequency point alignment is prepared by using the 4th-order first transmission line and 2 short-circuit lines. The specific preparation process is as follows:
[0094] (1) if Figure 9 As shown, an even-mode analysis is first performed on the designed circuit model, and the even-mode analysis is an analysis of the quality of signal transmission from port 1 (input end) to port 2 (or 3) (output end). What the present invention uses is the analytical method of ABCD matrix,
[0095] Among them, the ABCD matrix of the first horizontal transmission line is:
[0096]
[0097] The ABCD matrix of the short wiring is:
[0098]
[0099] Considering the 4 first transmission lines in the middle and the 2 short lines as one, its overall ABCD matrix is:
[0100]
[0101] Among them, the items of the matrix ABCD are:
[0102]
[0103] In the formula, a 0 , a 2 , a 4 , b...
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