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2020-03-17
Composite Dual Transmission Lines and Its Application to Miniaturization of Gysel Power Divider
By
Progress In Electromagnetics Research Letters, Vol. 90, 91-97, 2020
Abstract
This letter presents novel composite dual-transmission lines. The proposed line consists of one direct series line and two identical transmission lines connected by a series lumped capacitor. The line is analyzed with an even-odd mode analysis method to have simple closed-form design equations. From the design equations, it is also observed that one can maintain a more realizable value of the impedance of the lines and achieve a good amount of miniaturization by adjusting only the lumped capacitor. To verify this technique, a 74.6% miniaturized Gysel power divider (GPD) is designed at 0.95 GHz compared to reference GPD. The physical size of the proposed GPD is 60 mm × 32 mm (equivalently 0.25λg × 0.13λg, λg is guided wavelength line). Moreover, two transmission zeros (TZs) are obtained near passband which improved the out-of-band performance.
Citation
Mukesh Kumar, Gobinda Sen, Sk. Nurul Islam, Susanta Kumar Parui, and Santanu Das, "Composite Dual Transmission Lines and Its Application to Miniaturization of Gysel Power Divider," Progress In Electromagnetics Research Letters, Vol. 90, 91-97, 2020.
doi:10.2528/PIERL19122603
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