The cognitive radio paradigm for develo** next-century wireless communication systems
is rapidly entering the mainstream, and various aspects of it are currently being applied in …

This paper presents a dual‐mode tunable bandpass filter (BPF) for global system for mobile
communication, universal mobile telecommunications system, wireless fidelity, and …

In this paper, a wideband band-pass frequency tunable filter using liquid crystal is proposed
for millimeter-wave applications, which achieves the band-pass characteristics by …

This paper proposes a high isolation of single pole double throw (SPDT) PIN diode switch
using switchable dumbbell-shaped defected ground structure (DGS). The proposed SPDT …

In this paper, a reconfigurable bandstop to allpass filters using defected ground structure
(DGS) in K-Band for millimeter-wave communications is proposed. Mathematical analysis of …

According to this study, a defective ground structure (DGS) with an ideal switch can be used
to create a bandstop to allpass filter for 5G applications. The redesigned Hairpin DGS's …

In this work, three successive filter models based on defected ground structure (DGS)
techniques are designed, fabricated, and tested to be utilized for different wireless …

Microwave filters with compact size are highly demandable in today's 5G communication
systems. Such Filters are designed using different techniques and steps. This review article …

This paper presents a novel investigation into the integration of DC biasing circuits within
single-unit DGS. Two distinct DGS configurations have been examined by using parametric …

A novel multifunctional reconfigurable microstrip bandpass filter with two electronic
switching is presented. In this paper, four possible combinations are explored using two …