CST – Computer Simulation Technology

Array Printed Yagi Microstrip Fed

Image of the Array Printed Yagi microstrip fed. Image of the Array Printed Yagi microstrip fed.

The printed Yagi is commonly used in reference designs where a directional antenna is required. The printed microstrip-fed Yagi consists of a double-sided driven dipole element with a reflector and a number of director elements all printed/etched on a substrate. The Antenna Magus design and export models include an integrated microstrip feed line which relies on the Yagi reflector as its ground plane.

In order to realize a balanced feed, the unbalanced microstrip feed line transitions to a balanced parallel strips line to feed the driven element.

Reasonably high gain can be obtained but the impedance and bandwidth are relatively poor and optimization of the antenna may be required to achieve optimal performance in a specific layout.

14 dBi Yagi design 14 dBi Yagi design

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