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A calculation method for the characteristic impedance of transmission lines with any perturbation structure is proposed. An analytical procedure is described with proper equations based on simple transmission line theories. The obtained characteristic impedance by the proposed method shows an almost constant value, while it fluctuates severely depending on the frequency in the conventional method...
In this paper, we propose a new extraction method for the characteristic impedance and effective dielectric constant of a microstrip line. It extracts the characteristic impedance and effective dielectric constant of a microstrip line that uses the results of S-parameters through the EM-simulation. And it also extracts the characteristic impedance and effective dielectric constant of microstrip line...
This paper suggests a new extraction method of the characteristic parameters of a coupled transmission line, which is structured like a microstrip line. A coupled line coupler that has -20 dB coupling at the center frequency 1.5 GHz is used for the extraction of the characteristic parameters. First, it extracts the characteristic parameters using the simulation results of the coupler. The paper shows...
This paper presents a new open stub structure of Kuroda low-pass filter using DGS (Defected Ground Structure). Low-pass filter based on Richard's transformation and Kuroda's identity has sharp slope in transition band and very good characteristic in stop band. But it is hard to fabricate the microstrip line because of high impedance of the open stub. So, this paper proposes a new structure that can...
An unequal Wilkinson power divider having rectangular-shaped defected ground structure (DGS) is proposed. DGS microstrip line adopted for the divider is composed of double-layer substrate which removes the ground problem of the previous DGS structures in packaging. The first layer includes DGS on the bottom ground plane. The second substrate of which top metal plane has been removed is attached to...
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