Venakata Sitaraman Puram;Vamsi Krishna Velidi;Arijit De
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引用次数: 0
Abstract
In the above paper (Feng et al., 2020) design of dual band branch-line couplers with short/open-ended stubs was presented. However, there are some major discrepancies & mistakes observed in the design equations and plots as well. For the case of dual band design using open-circuited stubs, it is found that the basic operation of the coupler is lost, where the through port behaves as isolated port and vice versa when attempted to design using circuit simulators with the impedances provided in (Feng et al., 2020). Here, corrected versions for the band ratio versus impedance plots for both dual-band couplers with short-ended and open-ended stubs are provided. Further, the correct design equations are derived and accordingly the correct simulation S-parameter plots for the dual-band couplers with open-ended stubs, along with corrected k values are given. Moreover, other minor typo errors to be noted for better readability for the research community are provided.
在上述论文（Feng et al., 2020）中，提出了短/开放式存根双频支路耦合器的设计。然而，在设计方程和图中也观察到一些主要的差异和错误。对于使用开路短管进行双频设计的情况，发现耦合器的基本操作丢失，其中通过端口表现为隔离端口，反之亦然，当试图使用电路模拟器使用（Feng et al., 2020）中提供的阻抗进行设计时。这里提供了带短端和开放式存根的双带耦合器的带比与阻抗图的修正版本。此外，推导了正确的设计方程，并据此给出了双频开放式存根耦合器的正确仿真s参数图，以及修正后的k值。此外，为提高研究界的可读性，还提供了其他需要注意的小错别字。
期刊介绍：
TCAS II publishes brief papers in the field specified by the theory, analysis, design, and practical implementations of circuits, and the application of circuit techniques to systems and to signal processing. Included is the whole spectrum from basic scientific theory to industrial applications. The field of interest covered includes:
Circuits: Analog, Digital and Mixed Signal Circuits and Systems
Nonlinear Circuits and Systems, Integrated Sensors, MEMS and Systems on Chip, Nanoscale Circuits and Systems, Optoelectronic
Circuits and Systems, Power Electronics and Systems
Software for Analog-and-Logic Circuits and Systems
Control aspects of Circuits and Systems.
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