Small Loop Antenna Links

Introduction, Theory, Tools

• Small Loop Antennas - AA5TB The loop antenna site
• Transmitting-Loops (WE0H) loop calculator by W6WQ, loop antenna article by W5QJR
• Loop Antennas Minnesota DX Club
• Magnet-Loop-Antennen-Rechner gibt sehr plausible Ergebnisse (doch auch hier wird der Proximity-Effekt bei Multiturn-Loops ingoriert)
• Some information on Small Transmitting Loops (GW0TQM)
• Joe Carr's Radio Tech-Notes - Small Loop Antennas (PDF, 26KB)
• A Small Transmitting Loop Antenna for 14MHz and 21MHz ... more small loop and other excellent articles from L. Butler VK5BR
• Lecture 12: Loop Antennas (PDF, 348KB; Wer fürchtet sich vor Hüllflächenintegralen? ;-)
  (from the series of lecture notes on Modern Antennas in Wireless Telecommunications by N. K. Nikolova)
• Intermediate-sized loop antennas by D. Jefferies
  and The Poynting vector, power transmission, and the CFA fundamental relation between antenna Q and size!
• Small Magnetic Receiving Loops (W8JI) explaining some common misunderstandings regarding "field impedance" and "shielded" loops
• Sensitivity of Multi Turn Receiving Loops W. E. Payne, N4YWK
• Magnetic loop antenna new theory Patents by B. Edginton, G0CWT
• Magnetische LOOP Antenne HB9ABX (including LOOPABXE.EXE for up to 4 turns) English version
• G4FGQ's Software some DOS-executable tools including: RJELOOP1, RJELOOP2, RJELOOP3, MAGLOOP4, BALUN4.
• MLOOP v4.0 (Berechnung von Magnetantennen 1..60MHz) ist nun Teil von Berechnungen für alle Themen des Amateurfunkens (MS Excel 2000/2002/2003: schade, nur für DOSen) von H.J. Kromer DK1NB (only for german Excel, although the tools offer English texts es well)
• Vertical magnetic Alford loop by PA0SIM ...no longer "small" but with deep nulls. See also PA0SIM's enlighting articles on local QRM supression techniques: DSP, self balancing antennas, loop phasing and polarisation.
• The Notes of Dr. C. E. Baum Sensor and Simulation Notes from the "ATLAS-1" EMP testing facitily. For loop theory (emphasis on Möbius/Moebius/Mobius loops; sorry, no Orgon Radionics Over Unity Quantum Field Free Zero Point Energy Hyper Dimensional Resonator Levitation Devices...)
  see notes No. 4 (PDF, 364KB), 7 (566KB), 8 (576KB), 23 (866KB), 25 (613KB), 43 (640KB), 47 (859KB), 127 (2814KB), 133 (748KB), 183 (777KB), 303 (1610KB), 470 (518KB), 497 (101KB), etc. Extremly interesting reading!

160m,MF,LF,VLF and below

• 160 Meter short TX loop a table-top 8-turn loop by E. Loranger, WE6W
• HB9MTN ANTENNA PROJECTS a 160m TX-Loop with a HB9ABX coupling loop
• Bandpass Receiving Loop Antennas (PDF, 335KB) (M0BMU) broadband, yet high output
• AM Loop Antennas (B. Carter) ingnore the comment about the spiral wound loops showing different directional recieving patterns than edge wound!
• THINKING about IDEAL LOOPS by M. Bruno, and
  Going Low in Frequency With Loop Antennas by P. Schmalkoke. Two examples of excellent loop articles from the Radio Waves below 22kHz VLF/ELF/ULF website.
• Receiving Loop Aerials for 1.8 MHz (VK5BR)
• Computer Modeling of LowFER Transmitting Antennas L. Koehler, K0LR (utilizing MININEC)
• A small LF loop antenna (PDF, 245KB) a 10..150kHz RX loop by K. Betke
• Doug's Radio-Electronics Loop Antenna Page first time I read of balanced loops and Möbius Windings...
• The K9AY Loop A terminated receiving loop, actually not a small magnetic loop!
  see also: K9AY_Flag_Pennant_Ewe (W8JI)

Various Loop Projects on the Net

• Magnetic Loop antenne's. (ON4CEQ Van Herck) tips on building small loops
• Practical Experiments with Magnetic Loop antennas (D. Reid PA3HBB / G0BZF)
• Miniature Magnetic Loops (PDF, 700KB) A tech note at Elecraft's
• An Unusual Two Band Magnetic Loop Antenna by J. Vavruska, OK1FOU
• The Rockloop (W9SCH) A Compact QRP Antenna for 10-21MHz (but rather lossy!)
• Coax Loop Antenna for 160-10 meters
  and constant-current vertical loop (RX-loops by Greertech) last snapshots from the Internet Archive. (Missing pictures can be found in earlier snapshots.)
• Compact Antennas (W8MU) describes WA6QBU's DCTL Antenna
• N5ESE's DCTL Portable Antenna (Prototype)
  N5ESE's Shielded-Loop Receiving Antenna
  N5ESE's Notebook Antenna for comparision: a 12-foot, 7-band wire doublet
• EA5XQ's Projects: Indoor Antennas
  EA5XQ's Projects: Magnetic Loop including an Excel sheet for download
• My Magnetic Loop Antenna (KR1ST)
• Magnetic Loop Info, W2BRI Loops featuring
  Convoluted Loop with Toroid Feed according to W5QJR and K6HPX (man lernt nie aus..!). A digest of K6HPX's article is here
• 160/80m Coaxial Loop Receiving Antennas (S. F. Ritchie) a dual loop
• PYAHD - magnetic loop passion a multitude of loops... including hydraulic tuned (!), backpacks and lossy aluminum foil loops
• The 3805er Receiving Loop (W8WWV)

Small Loops on PCBs

• Nordic Semiconductor ASA provides articles on - and PCB layouts for - 433MHz small loop antennas:
  Application Note: Small Loop Antennas (PDF, 151KB)
  Application Note: Antenna Layout (PDF, 174KB)
• Matching Maxims 300-450 MHz Transmitters to Small Loop Antennas
• Two articles from Microwaves & RF by F.L. Dacus, J.v. Niekerk, S. Bible. (Microchip Technology)
  Introducing Loop Antennas For Short-RangeRadios (PDF, 755KB) and
  Matching Loop Antennas To Short-Range Radios (PDF, 1200KB)
• Automatic Antenna Tuning Saves Power F. Mernyei, Wireless Systems Design, 11/2004

Loopsticks and Litz Wire

• Coupled ferri-loop
• Litz Wire Technical Information (PDF, 550KB) New England Wire Technologies
• Eddy Current Losses in Transformer Windings and Circuit Wiring (PDF, 1439KB) L. Dixon, Jr
• Information for Magnetics Designers exhaustive information on skin effect, proximity effect and ferrite cores.. excellent!

Link Collections and Other Resources

• MagLoop a mailing list at QTH.NET. The current archive is only available to the list members (why??).
• ARRL TIS: The Loop Antenna ARRL members only :-(
• Yahoo! Groups : loopantennas all kinds of loops, including loopsticks (yet another top secret message archive..)
• Yahoo Ferrite Rod Antenna Experimenters almost no activity...
• Amidon Associates
• Ferrite Rods, Bars, Plates and Tubes CWS Bytemark
• Loop Antenna Discussions collected from USENET
• Other Small HF Loop Sites
• Links to further loop information
• Loop Antenna (and Related) Links (scroll down to the end of the page)
• Loop Antenna's
• Science Oxygen (da bin ich auch dabei:-)
• AC6V's Homebrew Antennas Links
• Antenna Programs at QRZ.COM
• Antenna Programs at URS
• Loop Antenna Index -- antenna special on hard-core-dx.com
• SWRX LOOPS - Loop Links in No Particular Order
• 136kHz technical pages (ON7YD)
• loop antenna Google Patents Search
• Magnetic Loop Antenna References C.Trask

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Last update: 2009-03-05, Gottfried Ira ira@oe1ira.at
http://www.oe1ira.at/sl/loop.html