Muhammad Yasir Wadood and Fatemeh Babaeian, A Compact Via-less Ultra-Wideband Microstrip Filter by Utilizing Open-Circuit Quarter Wavelength Stubs. journal = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology. February 2019, vol. 147(3). 178 - 181 [viewed 24 September 2024]. Available from: https://publications.waset.org/pdf/10010191.