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Marconi Redux: Small-Footprint High-Frequency Antenna System Design
  • Dr. Marcus Durham,
  • Pruitt R Durham,
  • Robert A Durham
Dr. Marcus Durham
Theway Labs

Corresponding Author:[email protected]

Author Profile
Pruitt R Durham
Theway Labs
Robert A Durham
Theway Labs

Abstract

The objective is to develop antenna systems that are small, unobtrusive, usable in limited space, indoor or portable, not exposed to lightning, easily configurable for alternate patterns, requiring only simple tools, minimum-skill install, without climbing, and inexpensive for use with high frequency (HF) and 6meters. Background discussion illustrates the present state-of-the-art and shows opportunity for improvement. Terminology clarification brings all antenna variations to a common denominator of radiator, return, and feed. SWR, impedance, and paths give measurements for comparison. Seven forms represent most, if not all, antenna patterns. Construction, tests, and measurements clearly illustrate an HF antenna system can be greatly reduced in size to a couple of meters. The trade-off is a narrowing of bandwidth. Methods for widening bandwidth and multi-band are presented. Nine design implementations reduce HF antennas to a miniscule space. A key consideration is changing every antenna element to a tunable, loaded inductor.
17 Jan 2024Submitted to TechRxiv
26 Jan 2024Published in TechRxiv