The Core Algorithm and Experimental Research of Antenna Gain Measurement by Extrapolation
CHEN Jun1,2,3, SONG Zhen-fei2, WAN Fa-yu3
1. China Mobile Group Jiangsu Co., Ltd. Taizhou Branch, Taizhou, Jiangsu 225300, China
2. National Institute of Metrology, Beijing 100029, China
3. Nanjing University of Information Science and Technology, Nanjing, Jiangsu 210044, China
Abstract：Based on the principle of extrapolation method, the core algorithm of extrapolation antenna gain measurement is studied. The innovation lies in the design of antenna mutual coupling suppression filtering, fitting of power series expansion and impedance mismatch correction, and the antenna gain calculation at any distance. In addition, an operation interface of extrapolation antenna gain measurement is designed basing the above core algorithm for antenna gain measurement convenience. Finally,The gain calibration experiment of W-band standard antenna is carried out, the gain measurement deviation is less than 0.04 dB with the NPL measurement, which achieves good equivalent consistency.
陈军,宋振飞,万发雨. 外推法天线增益测量的核心算法及实验研究[J]. 计量学报, 2021, 42(6): 793-798.
CHEN Jun, SONG Zhen-fei, WAN Fa-yu. The Core Algorithm and Experimental Research of Antenna Gain Measurement by Extrapolation. Acta Metrologica Sinica, 2021, 42(6): 793-798.
［1］ Antenna Standards Committee. IEEE standard test procedures for antennas［M］. 2003, 84-90.
［2］ Newell A C, Baird R C, Wacker P F. Accurate measurement of antenna gain and polarization at reduced distances by an extrapolation technique［J］. IEEE Transactions on Antennas and Propagation, 1973, 21(4): 418-431.
［3］ Repjar A G, Newell A C, Baird R C. Antenna gain measurements by an extended version of the NBS extrapolation method［J］. IEEE Transactions on Instrumentation & Measurement, 1983, 32(1): 88-91.
［4］ Newell A C. Improved polarization measurements using a modified three-antenna technique［J］. IEEE Transactions on Antennas and Propagation, 1988, 36(6): 852-854.
［5］ 丁健, 袁宝峰, 刘志勇, 等. 星载大型可展开网状天线形面精度测量方法研究［J］. 计量学报, 2018, 39(6A): 7-10.
Ding J, Yuan B F, Liu Z Y, et al. Research on measurement method of shape accuracy of spaceborne large expandable mesh antenna［J］. Acta Metrologica Sinica, 2018, 39(6A): 7-10.
［6］ 孟东林, 吴钒, 王维龙. NIM球面近场法天线校准装置的测量不确定度评定［J］. 计量学报, 2017, 38(6): 758-762.
Meng D L, Wu F, Wang W L. Uncertainty evaluation of NIM spherical near-field antenna calibration facility ［J］. Acta Metrologica Sinica, 2017, 38(6): 758-762.
［7］ 蒋廷勇, 燕有杰, 刘小龙, 等. 短电磁脉冲标准场装置实验室比对［J］. 计量学报, 2019, 40(6): 1107-1111.
Jiang T Y, Yan Y J, Liu X L, et al. Inter-laboratory comparisons of standard facilities for short pulse E-field［J］. Acta Metrologica Sinica, 2019, 40(6): 1107-1111.
［8］ Kang J S, Kang N W, David G, et al. Intercomparison of standard gain horn antennas at W-band［J］. IEEE Transactions on Instrumentation and Measurement, 2011, 60(7): 2627-2633.
［9］ Ji Y, Warner F M. Swept frequency gain measurements for standard horn antennas［C］// 2010 Conference on Precision Electromagnetic Measurements, Daejeon, Korea, 2010.
［10］ Ameya M, Hirose M, Kurokawa S. Antenna gain calibration using time-domain gating in extrapolation range for V-band pyramidal horn antennas［C］// 2010 Conference on Precision Electromagnetic Measurements, Daejeon, Korea, 2010.
［11］ Kang J S, Kim J H, Park J I. Comparison of Antenna Parameters of R-/S-Band Standard Gain Horn Antennas［C］// 2015 International Workshop on Antenna Technology (iWAT), Seoul, Korea, 2015.
［12］ Guerrieri J R, Coder J B, Francis M H, et al. International comparison of Ku-band standard gain horn characterization［C］// European Conference on Antennas and Propagation, Noord-Holland, Holland, 2014.
［13］ 孟东林, 谢鸣, 李大博, 等. K波段喇叭天线增益的预测及外推法实测验证［J］. 微波学报, 2012, 28(3): 39-43.
Meng D L, Xie M, Li D B, et al. Gain predictions of K-Band horn and validation by extrapolation method［J］. Journal of Microwave, 2012, 28(3): 39-43.
［14］ Song Z F, David G, Chen J, et al. Impedance mismatch correction for antenna gain measurement and its uncertainty evaluation［C］// 2016 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO), Beijing, China, 2016.
［15］ 陈军, 宋振飞, 万发雨, 等. 外推法天线增益测量的阻抗失配修正及其不确定度评定［J］. 计量学报, 2018, 39(1): 104-108.
Chen J, Song Z F, Wan F Y, et al. The impedance mismatch correction for antenna gain extrapolation measurement and its uncertainty evaluation［J］. Acta Metrologica Sinica, 2018, 39(1): 104-108.
［16］ 刘潇, Gentle D. 外推法天线增益测量系统的暗室反射影响评估［J］. 电波科学学报, 2016, 31(5): 1004-1008.
Liu X, Gentle D. A method to evaluate the chamber reflection effect for antenna gain measurements using an extrapolation range ［J］. ChineseJournal of Radio Science, 2016, 31(5): 1004-1008.
2021, Vol. 42 
