Semi-Resistive Approach for Tightly Coupled Dipole Array Bandwidth Enhancement

被引：19
作者：
Carvalho M. [1 ]
Johnson A.D. [1 ]
Alwan E.A. [1 ]
Volakis J.L. [1 ]
机构：
[1] Department of Electrical and Computer Engineering, Florida International University, Miami, FL
来源：
IEEE Open Journal of Antennas and Propagation | 2021年 / 2卷
关键词：
bandwidth enhancement; frequency selective surface (FSS) network; phased array; Tightly coupled dipole array (TCDA); ultra-wideband (UWB) array; wide-angle impedance matching (WAIM);
D O I：
10.1109/OJAP.2020.3047494
中图分类号：
学科分类号：
摘要：
A new approach to enhance the bandwidth of Tightly Coupled Dipole Arrays (TCDA) is presented. The new design achieves the integration of a semi-resistive Frequency Selective Surface network (FSS) composed of a non-resistive low-pass FSS and two resistive band-stop FSSs. The integration of this FSS network within a dual-polarized Tightly Coupled Dipole Array (TCDA) led to an increased impedance bandwidth of 28:1 from 0.20GHz to 5.6GHz. Notably, the use of an FSS superstrate allowed for scanning down to 60° at VSWR < 3 in the E-plane and VSWR < 4 in the D- and H-planes. Additionally, the strategic use of the inserted low-pass FSS reduces the resistive effects above 2.5GHz for improved average efficiency. A array prototype was fabricated and tested to verify the bandwidth and gain of a finite array. The simulated radiation efficiency was demonstrated to be 83%, on average, across the band. © 2020 IEEE.
引用
收藏
页码：110 / 117
页数：7
相关论文
共 28 条
  • [1] Volakis J.L., Antenna Engineering Handbook, (2018)
  • [2] Hansen R.C., Phased Array Antennas 2nd Ed, (2009)
  • [3] Kulu E., Nanosats Database, (2020)
  • [4] Doane J.P., Sertel K., Volakis J.L., A wideband, wide scanning tightly coupled dipole array with integrated balun (TCDA-IB), Ieee Trans. Antennas Propag, 61, 9, pp. 4538-4548, (2013)
  • [5] Bah A.O., Qin P.-Y., Ziolkowski R.W., Guo Y.J., Bird T.S., A wideband low-profile tightly coupled antenna array with a very high figure of merit, Ieee Trans. Antennas Propag, 67, 4, pp. 2332-2343, (2019)
  • [6] Zhong J., Johnson A., Alwan E.A., Volakis J.L., Dual-linear polarized phased array with 9:1 bandwidth and 60? scanning off broadside, Ieee Trans. Antennas Propag, 67, 3, pp. 1996-2001, (2019)
  • [7] Elsallal M.W., Hood J.R., Kindt R., Development of substratefree frequency-scaled ultra-wide spectrum element (FUSE) phased array, Proc Ieee Int. Symp. Phased Array Syst. Technol. (PAST), pp. 1-5, (2016)
  • [8] Yetisir E., Ghalichechian N., Volakis J.L., Ultrawideband array with 70? scanning using FSS superstrate, Ieee Trans. Antennas Propag, 64, 10, pp. 4256-4265, (2016)
  • [9] Bah A.O., Qin P.-Y., Ziolkowski R.W., Cheng Q., Guo Y.J., Realization of an ultra-Thin metasurface to facilitate wide bandwidth, wide angle beam scanning, Sci. Rep, 8, (2018)
  • [10] Van Schelven R.M., Cavallo D., Neto A., Equivalent circuit models of finite slot antennas, Ieee Trans. Antennas Propag, 67, 7, pp. 4367-4376, (2019)
123