TY - JOUR
T1 - Experimental verification of phase retrieval of quasi-optical millimeter-wave beams
AU - Idei, Hiroshi
AU - Shimozuma, Takashi
AU - Shapiro, Michael A.
AU - Notake, Takashi
AU - Kubo, Shin
AU - Temkin, Richard J.
N1 - Funding Information:
Manuscript received April 17, 2006; revised July 6, 2006. This work was supported in part by the Japan–U.S. Collaboration in Nuclear Fusion Research under the Personal Exchange Program. The work of M. A. Shapiro and R. J. Temkin was supported by the U.S. Department of Energy, Office of Fusion Energy Sciences, Washington, DC.
PY - 2006/11
Y1 - 2006/11
N2 - The accuracy of a phase-retrieval procedure for microwave beams was analyzed and verified using an 84-GHz quasi-optical beam transmitted by a corrugated waveguide. The output intensity and phase profiles of the beam were directly measured with a microwave receiver. The beam intensity was also measured at several planes and the data were used with a phase-retrieval algorithm to yield an independent estimate of the phase. Moment and matching coefficient methods were used to analyze the retrieved profiles. In the higher order moment analysis, the intensity profiles, which were calculated from the retrieved phase profiles, coincided well with the measured profiles in terms of the beam size, asymmetric property (skewness), and flatness/peakedness (kurtosis) over the entire profile. Analysis indicated that the mode content of the beam obtained by phase retrieval matched that of the direct measurement with a matching coefficient of 0.97 using both the intensity and phase profiles.
AB - The accuracy of a phase-retrieval procedure for microwave beams was analyzed and verified using an 84-GHz quasi-optical beam transmitted by a corrugated waveguide. The output intensity and phase profiles of the beam were directly measured with a microwave receiver. The beam intensity was also measured at several planes and the data were used with a phase-retrieval algorithm to yield an independent estimate of the phase. Moment and matching coefficient methods were used to analyze the retrieved profiles. In the higher order moment analysis, the intensity profiles, which were calculated from the retrieved phase profiles, coincided well with the measured profiles in terms of the beam size, asymmetric property (skewness), and flatness/peakedness (kurtosis) over the entire profile. Analysis indicated that the mode content of the beam obtained by phase retrieval matched that of the direct measurement with a matching coefficient of 0.97 using both the intensity and phase profiles.
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U2 - 10.1109/TMTT.2006.884632
DO - 10.1109/TMTT.2006.884632
M3 - Article
AN - SCOPUS:33750829662
SN - 0018-9480
VL - 54
SP - 3899
EP - 3904
JO - IRE Transactions on Microwave Theory and Techniques
JF - IRE Transactions on Microwave Theory and Techniques
IS - 11
M1 - 1717758
ER -