A novel substrate integrated waveguide (SIW) hexagonal resonator structure and its
applications to bandpass filters are presented. Based on the SIW techniques, the resonance …

A compact microstrip rat-race coupler is proposed with a new phase inverter which is
realized by a modified Lange coupling structure with a slotted ground plane and a floating …

In this paper a robust technique for the design of high performance directional couplers is
proposed. It combines the advantages of wiggly coupled lines and slot-coupled lines but …

A novel design concept of dual-band 180 hybrid ring coupler is presented in this paper.
Coupler is a key element in front-end building blocks of wireless transceiver systems such …

The implementation of microstrip nonuniform transmission lines (MNTLs) for dual-band
branch-line coupler design is presented in this study. The proposed structure demonstrates …

This paper presents two full differential bandpass filters with small occupied areas. Both
filters are designed with the same basic structure which consists of two double coupled …

Nowadays, millimeter-wave systems are being a key factor to develop wide band
applications. In this paper, a directional coupler in millimeter-wave band using dielectric …

A new ultra‐wide band coupler obtained with two crossed double‐ridge waveguides
coupled through one aperture is proposed. The main features of the coupler include …

This letter introduces an ultrawideband directional coupler with ground-signal-ground (GSG)
interfaces that can be seamlessly integrated with the monolithic microwave integrated circuit …

A circuit model for vertical transitions between different coplanar waveguide systems using
via-holes is presented. The model is directly extracted from the geometry of the transition …