Here’s a handy diagram highlighting a transformer-fed End-Fed Half-Wave (EFHW) antenna—useful to have while exploring the articles below.

There are hundreds of articles and musings about EFHW antennas.  A few that might be useful are below.

1. Basic Understanding & Fundamentals

• “The End Fed Half Wave Antenna” by AA5TB
  Offers a foundational explanation of the EFHW design, highlighting how feeding a half-wave wire at one end results in very high impedance, necessitating impedance matching strategies.   AA5TB

• “Simple End Fed Half Wave for 40 m (and How It Works)” by DH7LM
  A clear step-by-step guide for building a basic monoband (40 m) EFHW. Great for beginners, it explains the need for a transformer to match the high feed-point impedance to the transceiver’s 50 Ω input.   Ham Radio Soul

2. Matching Networks & Transformer Designs

• “An End-Fed Half-Wave Antenna – with No Impedance Transformer” (Ham Radio Outside the Box)
  Describes an alternative L-network matching method as opposed to the common 49:1 unun, noting efficiency trade-offs—transformers offer broadband convenience, whereas L-networks tend to be more efficient but are single-band.  Ham Radio Outside the Box

• “Venturing Outside the Box with the End-Fed Half-Wave Antenna” (Ham Radio Outside the Box)
  Delves into the impedance mismatch challenges inherent in EFHW antennas and reiterates the need for impedance correction, with practical considerations for variability due to environmental factors.  Ham Radio Outside the Box

• “A Deep Dive into End-Fed Half-Wave Antennas” 
  A comprehensive technical deep dive. Explains matching transformer ratios (9:1 through 64:1), counterpoise design, balun/isolation strategies, and detailed construction guidance for 80 m and multi-band configurations. Includes tables and diagrams.  Battery Eliminator Store+1

• “End-Fed Half-Wave Antenna Kit” (ARRL)
  Details the contents of a 49:1 matching kit for EFHW antennas—practical for those looking to assemble a reliable broadband matching network for 10, 15, 20, and 40 m bands.   ARRL

3. Modeling, Deployment & Practical Usage

• “Multiband End-Fed Half-Wave EFHW Antenna” (vu2nsb.com)
  Covers geometry, performance traits, environmental effects, installation considerations, and pitfalls—especially EMI and radiation pattern issues.  VU2NSB.com – Amazing Amateur Radio

• “A Shortened Multi-Band End-Fed Half-Wave (EFHW) Antenna for 80-10 m” (G0KYA et al.)
  Presents a compact 23 m EFHW solution, suitable for limited-space setups. Includes SWR bandwidth and performance comparison to full-size dipoles.
  G0KYA

• “Antenna Alchemy – End Fed Half Wave Antenna…” (W0CP Blog)
  A personal account of using EFHW for field activations (SOTA). Emphasizes speed and portability, noting EFHWs’ practical popularity for quick setup in challenging environments.

4. A Critique

• “End-Fed Antennas, a Critical View” (HF Kits)
  A cautionary piece discussing common-mode currents in EFHW setups. Highlights potential issues—RFI, interference, feedline radiation—and underscores the importance of a proper counterpoise or choking (balun) to mitigate these.   HF kits

• “End-Fed Half-Wave Wire Antennas” (N6CC)
  Provides a balanced take—EFHWs are “general purpose” and fun, but performance varies with conditions and installation quality. A realistic perspective for casual or experimental use.   N6CC

5. Academic Overview

• “The End-Fed Half-Wave (EFHW) Dipole Wire Antenna” (T. W. Longfellow, N7TWL)
  A PDF paper offering a structured overview of EFHW antenna components and principles, aimed at both theoretical and practical audience—written in June 2023.   n7tar.org

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Summary Table