Posts Tagged ‘ground’

12dBi MP12 Quad Stacked Omni 2.4/5 GHz Antenna

Friday, December 7th, 2007

Multipolarized antenna from wifi plus.

Blueprint is found on visit site for more info and pictures.

Specification and pictures of the original antenna :

non line of sight antenna

• Compact Omni head design
• Dual Band Frequency
• Beamwidth: 360° Horizontal, 15° Vertical
• Quad Stack improves gain to 12dBi
7° downtilt for height installation
• Includes pole mount bracket for mast mounting up to 1.625″ O.D.

It is surprising that they give this antenna as dual band?

So this is the top omni model of this kind of antennas.

And I can’t find it on site – so it seems that it is not manufactured anymore.

And interesting part :

non line of sight antenna

MP emitting element :

non line of sight antenna

Ground mounting :

non line of sight antenna

Parts list :

non line of sight antenna

Blueprint :

non line of sight antenna

Mounting mast is wooden.

We waiting for the first test.

Horn And Waveguide Feeder for 2.4Ghz

Sunday, September 30th, 2007

I always wonder haw to feed waveguide or horn from the back – all the designs are feeded from side as usual Cantennas.

Now I have picture – file is pretty old but interesting.


I cannot remember from where I take the PDF file to write a link. Here it is 8602-4.pdf ,I didn’t change the name of the file.

Most interesting is that the connector is on the back – also wide band feeder is used and antenna is DC grounded – which differ from original cantenna design.

I used a lot of cantenas and this will be tested at first possible moment.

Also may be used in slotted waveguides.

14dbi panel antenna

Saturday, May 12th, 2007

This antenna has interesting story for me – I meet it in several sites. It lies around for two or more years and I regular find some pics for it. Its interesting design of the active elements and feeding.

It looks like that several of these antennas are opened – one in greek and one is posted in sveasoft forums. Another recently found info in one german forum.

The main thing is that this one is two sides pcb board whit printed on it 4 biquads which are feeded whit microstip lines and connected whit coax in the center.

The good thing about this antenna is its DIMENSIONS – its VERY SMALL ! Only 15 x 16 cm !

As we know small is beautiful so this one is perfect for implementing in small box whit AP and use very small coax line .

The original is : SuperPass. They sold this ones as OEM kit antenna, but already stopped this product.

Model is : SPFPGH14

There was some pictures and scans on sveasoft forums also guiding dimension.

sveasoft scan

reflector psition

Also the is some greek pic of this from

It seems to consists of 8 closed loop dipoles (approx. 320 Ohm each) in phase, binding together with microstrip match lines.
8 dipoles – no f way.

More pictures may be found here and dates are by 2004 year 🙂 but I found this one now.

Finally I posted it in forums and there we collect some dimensions and tuskan tested the antenna. A lot of thanks to tuskan and gunner05.

Drawing by gunner05 in adobe illustrator format.

Here is the page whit tuskan /i think/ antenna and explanations in russian. He build and tested several of these antennas – by his opinion they perform well for the given gain ~14dbi.

It seems to work well, also antenna is grounded.

I still can’t find time to test one of these 🙂

The original russian forum but all collaboration was there.

Soon I will post diy technique to make pcb boards.