This paper presents a novel microstrip diplexer constructed by integrating the engraved
semi-patch cells. It operates at 1.8 GHz for global system for mobile communication (GSM) …

A microstrip planar lowpass filter (LPF) with sharp roll‐off and ultra‐wide stopband up to 40
GHz is presented. The central part of the LPF consists of three basic circular sectors, two …

In this work, a lowpass–bandpass diplexer is proposed based on a novel microstrip
structure. This diplexer includes two lowpass and bandpass filters integrated by a simple …

In this paper, a low-pass filter (LPF) using modified flag resonators to achieve sharp roll-off
and an ultrawide stopband up to 18 times the cutoff frequency (fc) is presented. To obtain a …

This article proposes a new branch-line coupler design using two trapezoid-shaped
resonators, applied in side and center. The standard 35 and 50 Ohms λ/4 transmission lines …

This paper presents a novel design of lowpass-bandpass microstrip diplexer using patch
and interdigital cells. In comparison with the previously reported lowpass-bandpass …

Power dividers are the most important tools in microwave systems such as mixers, frequency
multipliers, and feeding networks in antennas. So far, in designing power dividers, various …

This paper presents the design of a compact, ultra-sharp roll-off lowpass filter using stepped
impedance modified T-type with stepped impedance stub (SMTS). The position of the …

A compact low-pass filter is presented using a modified hairpin resonator to provide a wide
stopband and sharp roll-off. The filter is designed for a 2.4 GHz cutoff frequency, which can …

In this work, a novel structure of a microstrip diplexer consisting of coupled patch cells is
presented. It works at 2.5 GHz and 4.7 GHz for wireless applications. The proposed structure …