Miniaturization trends in high-frequency electronics have led to accommodation challenges
in the integration of the corresponding components. Size reduction thereof has become a …

This letter presents, for the first time, a tunable narrowband substrate integrated waveguide
(SIW) cavity-based quadrature hybrid coupler. Four high-quality factor (Q) SIW evanescent …

In this paper, for the first time, an ultra-compact frequency-tunable filtering rat-race coupler
based on half-mode evanescent-mode (EVA) cavity resonators is presented. Employing …

In this paper, two 50Ω terminated rat-race hybrid couplers based on uniform folded
structures are proposed for equal division of power. The proposed designs are of simple in …

Multifunctional RF components are of great benefit to wireless systems, as they can reduce
size and power consumption. A fully balanced Low-Noise Amplifier (LNA), with embedded …

A broadband and compact 180° hybrid that covers 3-5 GHz is proposed for the fifth
generation (5G) new radio (NR) N77/N78/N79 applications. The broadband characteristic is …

A class of out-of-phase 3-dB bandpass-filtering couplers with input-reflectionless capabilities
is presented. To obtain the bandpass-filter (BPF) functionality, identical BPF sections are …

Full duplex (FD) could potentially double wireless communications capacity by allowing
simultaneous transmission and reception on the same frequency channel. A single antenna …

In this growing technological trend, there always has been a requirement of multifunctional
wireless devices which can provide all-around connectivity with assorted entertaining …

In order to meet the market demands, multi-band communication systems that are able to
accommodate different wireless technologies to be compatible with different wireless …