s2402ps12mmx

Hi kayaoo,

can you give an example of the ceiling antenna so we can all investigate?

Cheers,
Element7k

[quote="Element7k"]Hi kayaoo,
can you give an example of the ceiling antenna so we can all investigate?
[quote="kayaoo"]
oh,That's what i want too. I search on the google but can not find a useful paper. Some of the ceiling antennas are stub monopoles. but Some of them have a very small height and can not be a simple monopole.here is a sample.
http://www.cushcraft.com/support/pdf/S2402PS12MMX.pdf

Another very peculiar antenna design is this one:

http://www.hubersuhner.com/sp-rf-ant-prod-db-spa_0859_360_4_10_v_en.pdf

given its size
- sounds planar

given its manufacturer (cushcraft)

- should be straightfoward and cheap to produce
- cheap substrate (if any)

missing polarization specification

- could it be mixed?

i'll think about a design with these guidelines

:)

Hi,

this antenna was featured in Microwave Journal sometime ago (size quite big though) (I think sometime in summer 2003) and if I remember, it did give a quick explanation of how the antenna works. Basically, it is derived from a flat plate to obtain broadband response. It has something to do with the size of the gnd plane and the height and flare of the plate away from gnd. Also an article about a similar type but not bended antenna can be found if you search for author Max Ammann in the IEEE website (I think he wrote an article in the antenna and propagation magazine.

Cheers,
Element7k

Amazing information Element7k :)

You were right. MWJournal July 2003 article about ultrawideband antenna with style by Huber-Suhner... hehe
It's the same antenna that I was talking about...

With brief design guidelines and a reference from Antennas & Prop. Trans.

Take a look:

http://www.mwjournal.com/default.asp...month=7&rsno=4

(you need to subscribe for online view...)

hehe,a really novel design! But is it too big for ceiling mount?