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A wide-band multiport planar power-divider design using matched sectorial components in radial arrangement

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2 Author(s)
Yung-Jinn Chen ; Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan ; Ruey-Beei Wu

This paper proposes a new multiport planar power-divider design by radially combining the sectorial components and the input and output matching networks. This design can achieve good input match over a wide bandwidth without resorting to transformer sections of high-impedance lines, which are difficult to realize. This approach is applied to the design of 4-and 14-way center-fed power dividers in microstrip structures with good input match (voltage standing-wave ratio (VSWR) <1.5) over a bandwidth of 30% and 15%, respectively. The return loss of output ports and the isolation among them in the 14-way divider are less than -13 dB. A simple analysis method using the radial transmission-line theory to model the microstrip sectorial components is employed to characterize the power dividers. The calculated scattering parameters are found to be in good agreement with the measured data

Published in:

IEEE Transactions on Microwave Theory and Techniques  (Volume:46 ,  Issue: 8 )