A novel miniaturized microstrip lowpass-bandpass diplexer using patch and interdigital cells for wireless networks

• A novel lowpass-bandpass microstrip diplexer is designed, analyzed and fabricated. • A theory method is presented to show the behavior of the proposed structure. • Our diplexer has the smallest size and low losses in comparison with the previous works. This paper presents a novel design of lowpass-bandpass microstrip diplexer using patch and interdigital cells. In comparison with the previously reported lowpass-bandpass diplexers, the proposed...