Design of Dual-Polarized Pyramidal Log-Periodic Antenna with Integrated Feed for Additive Manufacturing

Authors

  • Gaeron R. Friedrichs Department of Electrical, Computer, and Energy Engineering University of Colorado Boulder, CO 80309-0425, USA
  • Jake A. Cazden Department of Electrical, Computer, and Energy Engineering University of Colorado Boulder, CO 80309-0425, USA
  • Dejan S. Filipovic Department of Electrical, Computer, and Energy Engineering University of Colorado Boulder, CO 80309-0425, USA

Keywords:

3d printing, direction finding, integrated feed, log periodic, wideband

Abstract

A dual-polarized log-periodic antenna with 5:1 bandwidth is considered for wideband, amplitude only directionfinding applications. The proposed system is comprised of two identical, orthogonal, sets of trapezoidal log-periodic arms. The arms’ inclination from planar facilitates reduced back lobe radiation to improve directivity and efficiency once absorber is introduced. One arm of each polarization set contains a variable radius coaxial shell to achieve impedance matching such that the system impedance at the base of the antenna is matched to 50 ohms. Analysis and design for the 3d printed direction-finding antenna system is accomplished using a commercial off the shelf (COTS) finite element method (FEM) solver.

References

R. Mohan, T. Chang, et al., “Ultra-wideband spectral analysis using S2 technology,” in The Journal of Luminescence., no. 127, Mar. 2007, pp. 116-128.

D. I. L. deVilliers, “Initial Study of a Pyramidal Sinuous Antenna as a Feed for the SKA Reflector System in Band-1,” 2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, San Diego, CA, July 2017, pp. 555-556.

M. Johnston, C. V. Niekerk, and D. I. L. deVilliers, “Ultra-wideband Planar Marchand Balun Design for the Pyramidal Sinuous Antenna,” 2019 IEEE International Symposium on Antennas and Propagation & USNC/URSI Radio Science Meeting, Atlanta, GA, July 2019, pp. 735- 736.

R. H. DuHamel and F. R. Ore, “Logarithmically Periodic Antenna Designs,” in 1958 IRE International Convention Record, New York, NY, Mar. 1966, pp. 139-151.

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Published

2020-11-07

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Section

Articles