Talk:Horn antenna

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Why?

The main thing this article needs, I think, is at least a brief explanation of why a horn-shaped antenna is desirable. Any experts want to leap in and provide one? --Doradus 12:09, 4 May 2007 (UTC)[reply]

Well,

It tapers the wave impedance from that in the waveguide to that of free space, and so achieves a much better match (lower VSWR) than a simple open-ended waveguide.
It gives a larger aperture and hence a higher directivity than an open-ended waveguide (provided the taper is gradual enough that there isn't a large phase-variation over the aperture).

Incidentally: A portion of a waveguide in which the cross section is smoothly increased along the axial direction is a taper; I've never heard it called a horn. (Can't summon the enthusiasm to fix the actual article right now) --catslash (talk) 22:49, 29 May 2009 (UTC)[reply]

Added a 'How it works' explanation. --Chetvorno^TALK 09:59, 14 November 2010 (UTC)[reply]

And a lot more besides! Nice work. --catslash (talk) 23:37, 14 November 2010 (UTC)[reply]

Rename this article Horn antenna?

I suggest removing content referring to acoustic horns, which is already covered in horn (acoustic) and renaming this article Horn antenna. Like catslash I have never heard an internal taper in a waveguide called a "horn", in my experience the term "horn" in microwave engineering is used for horn antennas. --Chetvorno^TALK 01:37, 18 July 2010 (UTC)[reply]

Agreed. Horn antenna already redirects here. Also the change would side-step the issue of whether a taper could be called a horn. --catslash (talk) 21:45, 18 July 2010 (UTC)[reply]

Looking at this issue too. As we have Horn (acoustic) then I would suggest this article be left as is or renamed Horn (microwave). Horn (microwave) is, in my experience, a very common term for them, after all you do use horns at microwave frequencies don't you?. Types of horn antenna should be merged in and redirected, though I doubt there is any useable content.
- The stub Horn (telescope) exists, should probably be a wp:dab page. Feed horn might be merged too. ☢ 220.101 talk^\Contribs 04:56, 27 September 2010 (UTC)[reply]

Although horns are most commonly used at microwave frequencies, they are also used at UHF and millimeter wave frequencies, so I think Horn (microwave) would be inaccurate. The title Horn antenna emphasizes its function and avoids specializing to a specific frequency range, and is what the device is called in engineering texts. Horn (microwave) could be a redirect. --Chetvorno^TALK 19:36, 12 November 2010 (UTC)[reply]

The acoustic content has been moved to Horn (acoustic) and the article has been renamed Horn antenna. --Chetvorno^TALK 18:49, 20 November 2010 (UTC)[reply]

Incorrect reference

The photo shown of a pair of Seattle Long-Lines horns are NOT Hoggs Horns; rather they are examples of a KS-15676 "Horn Antenna System" <http://long-lines.net/tech-equip/radio/BSP402421100/p01.html> with a patent filing by Alfred C Beck and Harold T Friis (the wizard of radio-relay) November 26, 1941. Patent #2,416,675 granted and assigned to Bell Telephone Laboratories March 4, 1947...

<http://www.freepatentsonline.com/2416675.pdf>

This was before the Hoggs design. — Preceding unsigned comment added by 166.84.1.1 (talk) 00:23, 19 December 2011 (UTC)[reply]

I wrote the section on the Hogg antenna. You're right about the inventor, thanks for catching my screwup! I was able to find only brief articles about the antenna in technical books, and I thought I read that Hogg had invented it. Oops. The KS-15676 spec sheet you pointed out is fantastic!!!!! I tried to find info on those AT&T horn reflector antennas and couldn't find any. Horn reflector antennas like the KS-15676 are the same design as the Holmdel Horn Antenna built by D. L. Hogg at Bell Labs in 1961, pictured in the article. 1. This design is referred to in microwave tech literature as the Hogg antenna. Apparently, although Beck and Friis invented it, Hogg got his name attached to it. --Chetvorno^TALK 05:41, 20 December 2011 (UTC)[reply]

They *are* amazing antennas. The BSP never mentions some obvious details; they are ~14 ft tall & weigh several thousand pounds. 166.84.1.5 (talk) 22:37, 28 December 2011 (UTC)[reply]

Content from types of horn antenna article

The following is the content from the article titled "types of horn antenna". I did not feel that it could be simply pasted into the article, so I am posting it here in the remote chance that any of it is salvageable. I also cleaned it up a little bit.

There are five types of horn antenna:

Conical horn antenna:Conical horn antenna can be directly excited from a circular waveguide
Ridge horns: Central ridge loads a waveguides and increases the bandwidth by lowering cutoff frequency of the dominant mode
Septum horns
Corrugated horns: Corrugated horns can provide reduced diffraction, improved pattern symmetry and reduced cross polarization
Aperture-Matched antenna

References

"Antennas for all Applications" by John D Kraus, McGraw Hill edition

--Kjkolb (talk) 03:10, 27 September 2010 (UTC)[reply]

Requested move

The following discussion is an archived discussion of a requested move. Please do not modify it. Subsequent comments should be made in a new section on the talk page. No further edits should be made to this section.

The result of the move request was: page moved. Vegaswikian (talk) 21:05, 19 November 2010 (UTC)[reply]

Horn (telecommunications) → Horn antenna — Specifies the device's function, corrects the inaccurate implication that horns are only used in telecommunications, and is standard usage in technical literature. Chetvorno^TALK 19:59, 12 November 2010 (UTC)[reply]

Support. This far more accurately describes the article's current content and focus, which fit in well with other related articles. Andrewa (talk) 22:50, 12 November 2010 (UTC)[reply]
Comment the acoustics portion of the article is not an antenna. 76.66.203.138 (talk) 05:43, 13 November 2010 (UTC)[reply]

Yes, as mentioned in the "Horn antenna" discussion above, I propose moving the acoustics content to Horn (acoustic). --Chetvorno^TALK 06:04, 13 November 2010 (UTC)[reply]

Support - for reasons already mentioned. Incidentally, there is also an article called Feed horn. Also incidentally, a requested move may not be necessary; it's usually possible for an autoconfirmed user to move an article to a name currently belonging to a redirect page. --catslash (talk) 23:29, 13 November 2010 (UTC)[reply]

The above discussion is preserved as an archive of a requested move. Please do not modify it. Subsequent comments should be made in a new section on this talk page. No further edits should be made to this section.