Abstract
In this paper, a modifled Wilkinson power divider structure with three order harmonics suppression is presented. The quarter-wavelength microstrip lines in the traditional Wilkinson power divider (WPD) are replaced by two transmission line segments with ends connected (TTLWEC). The TTLWEC performs the functions of impedance transformation and three order harmonics suppression. The design equations are deduced by odd- and even-mode theory. An example of power divider operating at 1GHz is designed and fabricated based on the printed circuit board technology. The measured results of 3.13dB insert loss (IL) and 35dB return loss (RL) are obtained at the operating frequency, and the flrst, second and third harmonic harmonics suppressions are i38dB, i44dB and i39dB, respectively, which agree well with the simulated results and validate the availability of the proposed structure.
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