COJOT Speeds Up Antenna Matching with Optenni Lab

COJOT uses Optenni Lab to speed up their broadband antenna matching tasks.

The Design Task

COJOT was set to design a portable radio dipole antenna operating at 300 – 500MHz. Integration on PCB  substrate was chosen due to easy integration, robustness and cost. The antenna was specified to deliver up to 20W output power, and the VSWR was required to be less than three over the whole operating band. Meeting the design target required implementation of a carefully chosen matching circuit, which was designed with Optenni Lab.

The Optenni Solution

The matching circuit design using Optenni Labʼs discrete component libraries was straightforward, and proved to be very accurate. The radiator was first designed and roughly optimized in CST Studio Suite. Then the simulation data was sent to Optenni Lab for matching circuit synthesis. The matching circuit was then automatically sent back to CST Studio Suite, closing the optimization loop. After a few co-optimization iterations the final design was ready for prototyping.

Overall Optenni Lab was simple to use, and the link to CST Studio Suite simplified the design flow. Optenni Lab speeds up antenna design, making this tool a must for all antenna designers.

caret-down caret-up caret-left caret-right

“We completed the antenna design task in record time, and the measured VSWR results agreed very well with the simulated results from Optenni Lab. Even with a simple antenna the choice of matching topology can be tricky, while Optenni Lab automatically provides a few best performing topologies, and optimizes them using the vendor components. This speeds up the design work considerably.”

Petri Rautio, RF Designer, COJOT

Download Full Customer Story PDF >

To learn more about COJOT products and services visit

Start your free trial now