Recent trend shows that the reduced size couplers are becoming potential building blocks
and have created a continuing demand for the growing wireless communications market …

This article presents the size‐miniaturized, wide‐bandwidth, and harmonic‐suppressed 10
dB branch line coupler (BLC) using cascaded symmetric PI sections. The complete design …

A conventional compact microstrip resonant cell (CMRC) has been thoroughly investigated
to enhance its slow‐wave properties and subsequently ensure an efficient miniaturization of …

This paper presents a planar 90° branch-line coupler designed by replacing the quarter-
wavelength transformers with coupled lines, which provides the proposed circuit with the …

In this paper, a novel miniaturized branch-line coupler (BLC) operating at 1.675 GHz is
proposed. Partially meandered lines and dual transmission lines equivalent technology are …

This article presents a compact model to reduce the physical size and increase the
frequency ratio between the second and first resonance frequencies of a dual‐function …

A novel approach of left-handed (LH) structures is introduced to reduce the size of
microwave components by combining a loaded coupled transmission lines and …

A compact branch line coupler is proposed by using the optimized step impedance
transmission lines (SITLs). The proposed branch line coupler has an area reduction of more …

A compact ring Branch‐Line Coupler (BLC) with size reduction of about 50%(in circuit area)
of conventional BLCs at frequency 2 GHz is introduced. The coupler is designed by using …

An extremely compact branch-line coupler operating at 900 MHz is presented without the
use of viaholes, multilayered technique, or air-bridged. The technique presented here uses …