Title :
Design of wideband complex ratio measuring unit (CRMU) in multilayer microstrip-slot technology for the application of QPSK modulator
Author :
Ghazali, S.N.A.M. ; Seman, N. ; Rahim, M.K.A. ; Rahim, S.K.A.
Author_Institution :
Wireless Commun. Centre (WCC), Univ. Teknol. Malaysia, Skudai, Malaysia
Abstract :
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 coefficients, return losses, q-point circle centers and QPSK constellations are presented. CST Microwave Studio is used for the CRMU design and the analysis on S-parameter performances is performed using Agilent´s Advanced Design System (ADS) software.
Keywords :
UHF measurement; microstrip couplers; microwave measurement; power dividers; quadrature phase shift keying; units (measurement); ADS software; Agilent advanced design system software; CRMU design; CST Microwave Studio; QPSK modulator; S-parameter performance analysis; frequency 2 GHz to 6 GHz; in-phase power divider; multilayer microstrip-slot technology; q-point circle centers; quadrature couplers; quadrature phase shift keying modulation; return losses; transmission coefficient parameter; wideband planar complex ratio measuring unit design; Couplers; Microstrip; Microwave circuits; Microwave communication; Phase shift keying; Power dividers; CRMU; QPSK; microstrip-slot; multilayer; wideband;
Conference_Titel :
Applied Electromagnetics (APACE), 2012 IEEE Asia-Pacific Conference on
Conference_Location :
Melaka
Print_ISBN :
978-1-4673-3114-2
DOI :
10.1109/APACE.2012.6457696
