悬置微带线滤波器的尺寸综合设计方法

doi:10.16180/j.cnki.issn1007-7820.2019.04.005

Abstract

Abstract:

As for the low precision problem of designing the Suspended Substrate Stripline filter based on empirical formulas, this paper presented a dimension synthesis method of the SSS filter. The equivalent circuit model of the resonant cavity and coupling structure of the SSS filter was established and the influence of the reactance slope of the coupling structure on the resonant cavity was analyzed in detail. Through the full wave simulation, the reactance slope parameters of the coupling structure could be accurately extracted and the physical length of the transmission line cavity was corrected step by step without time-consuming full wave optimization. Finally, A five orders SSS filter with Chebyshev response was designed. The simulation results agreed well with the theoretical results, which verified the validity of the method.

Key words: filter, suspended substrate stripline, the equivalent circuit model, computer aided design, circuit simulation, filter synthesis

CLC Number:

TN713.5

LI Gang,HU Xu. Dimension Synthesis Method of Suspended Substrate Stripline Filter[J].Electronic Science and Technology, 2019, 32(4): 20-23.

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References 16

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S/mm	Φ₁/mm	Φ₂/mm	L/mm
S₀₁=0.021	Φ_{1_01}=0.004	Φ_{2_01}=-2.899	L₁=16.371
S₁₂=1.758	Φ_{1_12}=0.282	Φ_{2_12}=-0.372	L₂=17.983
S₂₃=2.140	Φ_{1_23}=0.404	Φ_{2_23}=-0.075	L₃=18.193
S₃₄=2.140	Φ_{1_34}=0.404	Φ_{2_34}=-0.075	L₄=17.983
S₄₅=1.758	Φ_{1_45}=0.282	Φ_{2_45}=-0.372	L₅=16.371
S₅₆=0.021	Φ_{1_56}=0.004	Φ_{2_56}=-2.899

Dimension Synthesis Method of Suspended Substrate Stripline Filter

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