Antenna Radiation Pattern Measurement in a Nonanechoic Chamber

• Published in: IEEE antennas and wireless propagation letters Vol. 18; no. 2; pp. 383 - 386
• Main Authors: Froes, Saulo M., Corral, Pablo, Novo, Marcela S., Aljaro, Miguel, de C. Lima, Antonio C.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01-02-2019; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Anechoic chambers; Antenna measurements; Antenna radiation patterns; Antennas; Digital signal processing; Filtering; Horn antennas; Impulse response; nonanechoic measurements site; Position measurement; radiation pattern; Yagi-Uda antennas
• ISSN: 1536-1225; 1548-5757
• DOI: 10.1109/LAWP.2019.2891972

Several techniques are being studied with the objective of recovering the real antenna radiation patterns through measurements performed in nonanechoic environments. This is being proven by the use of digital signal processing techniques, based on several concepts, such as deconvolution, impulse response, and filtering. In this letter, a new methodology to obtain the actual antenna radiation patterns in noisy environments is proposed. An algorithm was developed that identifies similar points (power/angle) of the antenna radiation patterns through repeated measurements in different directions. Then, the most similar points were chosen, and the radiation pattern of the antenna was reconstructed and compared with the radiation pattern of the same antenna obtained in an anechoic chamber. The results demonstrate that the proposed technique is promising in the reconstruction of radiation pattern of antennas in noisy environments.