Collinear top section calculations

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.