Title :
Error Vector Magnitude Measurement On Cascaded Butler Matrices System
Author :
Rahim, S.K.A. ; Gardner, Peter
Author_Institution :
Dept. of Electron., Univ. of Birmingham, Birmingham
Abstract :
This paper describes error vector magnitude (EVM) measurement on vehicle communication system that employs low noise amplifiers (LNAs) and cascading Butler Matrices in producing broad beam high linearity and high gain narrow beam system. The output signals from the first Butler Matrix that have high gain and narrow beam width can be used for long distance communication while the outputs from the second Butler Matrix, which have high linearity, and broad beam width can be used for short range communications.
Keywords :
UHF measurement; adaptive antenna arrays; automotive electronics; cascade networks; low noise amplifiers; mobile communication; LNA; cascaded Butler matrices system; error vector magnitude measurement; linear system; long distance communication; low noise amplifiers; narrow beam system; vehicle communication system; Butler matrix; Computer errors; Constellation diagram; Electric variables measurement; Gain measurement; Linearity; Microwave measurements; Noise measurement; Power dividers; Vehicles; Butler Matrix; Error Vector Magnitude; Low Noise Amplifiers; component;
Conference_Titel :
Microwave Conference, 2007. APMC 2007. Asia-Pacific
Conference_Location :
Bangkok
Print_ISBN :
978-1-4244-0748-4
Electronic_ISBN :
978-1-4244-0749-1
DOI :
10.1109/APMC.2007.4554624
