A Novel Design of an H-shaped Microstrip Diplexer

Miniaturized Microstrip Diplexer Based on FR4 Substrate for Wireless Communications

“…The developed miniaturized microstrip diplexer using FR4 substrate in this paper has been compared with developed microstrip diplexers in [11], [16]- [20] as explained by Table I. The superiority of the proposed diplexer mostly comes from the high compactness, excellent return loss values, and the highest band isolation as compared with the reported diplexers in [11], [16]- [20].…”

“…The developed miniaturized microstrip diplexer using FR4 substrate in this paper has been compared with developed microstrip diplexers in [11], [16]- [20] as explained by Table I. The superiority of the proposed diplexer mostly comes from the high compactness, excellent return loss values, and the highest band isolation as compared with the reported diplexers in [11], [16]- [20]. The minor tolerable disadvantage of the designed device is that it has an insertion loss of 4.2 dB for channel 1 and 3.3 dB for channel 2, that are attributable to the dielectric loss and are comparable to the diplexer reported in [22].…”

“…The simulation and measurement have verified the projected diplexer. In [11], a novel microstrip diplexer employing H-shaped resonators with small dimensions and elevated band isolation has been introduced. This design has been operated under 2.4 GHz for the Industrial Scientific Medical (ISM) application, and under 1.575 GHz, for the GPS application.…”