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This article presents the design of a planar complex ratio measuring unit (CRMU) for the designated frequency range of 2 to 6 GHz in multilayer microstrip-slot technology. This CRMU utilizes one in-phase power divider and three 3 dB quadrature couplers. The analysis is performed to assess the performance of CRMU for the purpose of Quadrature Phase Shift Keying (QPSK) modulation. The parameter of transmission...
This paper demonstrates on how the edges affect the performance of the 3-dB coupler design operating in ultra wide band frequency range. The proposed design is accomplished using multilayer technology in which the structure is formed by 3 layers of conductors and interleaved by a layer of substrate between each one of the conductor layer. The simulation was carried out using CST Microwave Studio then...
This article presents the design of three-section rectangular-shaped directional coupler, which offers a tight coupling of 3 dB over the designated frequency band of 2 to 6 GHz. The proposed coupler was consisted of two substrates and one common ground plane between the two substrates. The proposed design was formed by rectangular-shaped microstrip line at the top and bottom with rectangular slot...
This paper presents the design and realization of reduced size branch-line coupler operating at 2.45GHz. Wireless communication has created a continuing demand for increased bandwidth and better quality of services. Smart antenna systems are one of the ways to accommodate this demand which can provide numerous benefits to service provider and the customer. Nowadays people tend to choose the compact...
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