On Tue, 29 Jan 2019 13:20:40 EST, "J.B. Wood"
wrote:

On 1/29/19 5:38 AM, QRZ.com via rec.radio.amateur.moderated Admin wrote:

Hello, and I just can seem to find anything on "magloop" antennas in any
of my non-ham antenna theory and design textbooks (e.g. Jasik, Terman,
King & Harrison, etc). Just shielded and unshielded loops, electrically
small or large. Don't see anything on "elecloops" either . Could
hams possibly know something these other authors don't? Sincerely, and
73s from N4GGO,

Look for "small loop antenna" or "small receiving loop antenna". That
seems to be the official names for these loops. Somewhere on the web
is Owen Duffy's rant on the topic of naming loop antenna, but I can't
find it.
https://owenduffy.net/blog/?s=small+receiving+loop+antenna
https://owenduffy.net/blog/?s=magnetic+loop

Digging through "Antennas" by John Kraus (1950), I found mention of
small loops in Chapter 6 "The Loop Antenna".

King and Harrison has this on loop antennas:
https://link.springer.com/chapter/10.1007/978-1-4684-6081-0_4

In "Antenna Engineering Handbook" by Henry Jasik (1961), this is all
of 4 pages in Chapter 6 on loop antennas with no mention of small
loops, magnetic loops, or high-Q designs. Most of my other books
concentrate on low Q HF antennas and direction finding configurations.

Since all the books that you and I have mentioned are from the 1950's
and 60's, and well before small magnetic loop antenna became popular,
I suspect the absence of detailed models and studies are
understandable. Also, the magnetic loop antenna is rather impractical
for anything other than amateur radio use because of the need to
retune the antenna with even the slightest change in frequency. With
commercial use limited or non-existent, I wouldn't expect to see much
funded research into their characteristics.


--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558