Posts Tagged ‘collinear’

10 dBi Omni Wi-Fi Antenna

Tuesday, April 13th, 2010

This is small omnidirectional antenna ratted 10 db at 2.4 GHz.

This omni is using usual collinear design.

Performance and range is still to be tested.

Thanks again to Venci from for the photo. He bought this one from ebay.

Collinear top section calculations

Friday, February 8th, 2008

Collinear top section calculations from :

Calculated dimensions are for DECT frequencies /1880 to 1900 MHz/.

Interesting for me here is top section.

DECT antenna omny

“… The top is made from coax copper and lambda/4. Note!!! Because the top radiate without dielectric insulation no speed factor is needed! …”

This differ from usual wifi collinear designs.

Very good descriprions about calculating and building this antenna.