CST – Computer Simulation Technology

Yagi-Uda Dipole Array with Folded Dipole | Antenna Magus

Image of the Yagi-Uda Dipole Array with Folded Dipole.

The conventional Yagi-Uda array, using a dipole as driven element typically has low input impedance and narrow bandwidth. By replacing the dipole feed with a folded dipole, the input impedance can be increased to match common cable impedances.

Antenna Magus allows the user to design the Yagi-Uda Dipole Array with Folded Dipole for different parameter objectives like gain, beamwidth and frequency and number of elements. There is a trade-off between the performance characteristics when optimizing for increased bandwidth which reduces the obtainable gain. For optimum designs, the director spacing and lengths are not uniform. Optimum structures are generally achieved based on optimization of a first-order design.

The following image shows a design comparison at 600 MHz. Antenna Magus provided an optimum gain design (blue trace) which was tweaked by shortening some of the directors and the folded dipole length. This achieved a wider impedance match while trading off some gain performance....

Comparison of an optimal gain design vs a design that was tweaked in order to increase the bandwidth.

Rate this Article

0 of 5 Stars
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
contact support

Your session has expired. Redirecting you to the login page...

We use cookie to operate this website, improve its usability, personalize your experience, and track visits. By continuing to use this site, you are consenting to use of cookies. You have the possibility to manage the parameters and choose whether to accept certain cookies while on the site. For more information, please read our updated privacy policy

Cookie Management

When you browse our website, cookies are enabled by default and data may be read or stored locally on your device. You can set your preferences below:

Functional cookies

These cookies enable additional functionality like saving preferences, allowing social interactions and analyzing usage for site optimization.

Advertising cookies

These cookies enable us and third parties to serve ads that are relevant to your interests.