Antena
Antenna Measurements
Viet-Thuy Vu and Mats I. Pettersson
Blekinge Institute of Technology, 37179 Karlskrona, Sweden Email: viet.thuy.vu@bth.se
Abstract The project of the course Radio Communication Technology and System ET1412 includes two assignments, ”Antenna Measurement and Characterization” and ”Radio Propagation Channel Measurement and Modeling”. This assignment is about antenna measurement and characterization. In this assignment, students are required to perform the measurements of the solid parabola’s patterns in the indoor and/or outdoor environments (depending on weather) using the Vector Network Analyzer (VNA) Agilent E5071C and the 2.4 GHz antennas, investigate and characterize the measured patterns using Matlab.
I. I NTRODUCTION A radio communication system usually has certain requirements for the antennas used in that communication system. For example, a radio and television broadcasting system usually requires an antenna array which its pattern is almost omnidirectional in the azimuth plane. Antennas used for the mobile communication are necessary to be small and can be integrated in electronic circuits while their characteristics must fulfill the demands of the mobile communication. To satisfy such requirements, characteristics of antennas must be examined and evaluated. Typical parameters of an antenna are input impedance, polarization, radiation efficiency, directivity, gain and radiation pattern. Other important parameters are resonant frequency, bandwidth and Voltage Standing Wave Ratio (VSWR). In the frame of the course Radio Communication Technology and System ET1412, students are required to perform the measurements of the antennas using the Vector Network Analyzer (VNA) Agilent E5071C and the 2.4 GHz antennas, and characterize these antennas using Scilab and Matlab. The environments for the measurements are indoor and outdoor. The radio communication system formed by the VNA and the antennas is a narrowband system. In section II, the
Viet-Thuy Vu and Mats I. Pettersson
Blekinge Institute of Technology, 37179 Karlskrona, Sweden Email: viet.thuy.vu@bth.se
Abstract The project of the course Radio Communication Technology and System ET1412 includes two assignments, ”Antenna Measurement and Characterization” and ”Radio Propagation Channel Measurement and Modeling”. This assignment is about antenna measurement and characterization. In this assignment, students are required to perform the measurements of the solid parabola’s patterns in the indoor and/or outdoor environments (depending on weather) using the Vector Network Analyzer (VNA) Agilent E5071C and the 2.4 GHz antennas, investigate and characterize the measured patterns using Matlab.
I. I NTRODUCTION A radio communication system usually has certain requirements for the antennas used in that communication system. For example, a radio and television broadcasting system usually requires an antenna array which its pattern is almost omnidirectional in the azimuth plane. Antennas used for the mobile communication are necessary to be small and can be integrated in electronic circuits while their characteristics must fulfill the demands of the mobile communication. To satisfy such requirements, characteristics of antennas must be examined and evaluated. Typical parameters of an antenna are input impedance, polarization, radiation efficiency, directivity, gain and radiation pattern. Other important parameters are resonant frequency, bandwidth and Voltage Standing Wave Ratio (VSWR). In the frame of the course Radio Communication Technology and System ET1412, students are required to perform the measurements of the antennas using the Vector Network Analyzer (VNA) Agilent E5071C and the 2.4 GHz antennas, and characterize these antennas using Scilab and Matlab. The environments for the measurements are indoor and outdoor. The radio communication system formed by the VNA and the antennas is a narrowband system. In section II, the