ABSTRACT
The modified dual-frequency printed quasi-Yagi antenna has been designed. After multi-step optimization, the S11 parameter of the antenna is as low as −27 and −14 dB at f01 = 1.7 and f02 = 2.45 GHz, respectively. The antenna directivity is 7.1 and 5 dB at f01 = 1.7 and f02 = 2.45 GHz, respectively. The total length of the planar dual-frequency quasi-Yagi antenna is 158 mm. The universal algorithm of the antenna design has been proposed, and the algorithm can be applied to the creation of three-frequency printed quasi-Yagi antennas.
Funding
This work was financially supported by the Ministry of Education and Science of the Russian Federation within basic tasks of the state; the project theme is the constructing theory and practical implementation of broadband microwave devices intended for use in the measuring equipment of digital television and telecommunications, including computer systems (Code 629). V.V.A. was partly supported by the Ministry of Education and Science of the Russian Federation.