Compact in-phase power divider integrated filtering response using spiral resonator

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Abstract

A compact in-phase power divider with filtering response is presented in this study. Spiral resonators are meant to realise compact size and bandpass-filtering response. To improve the frequency selectivity of the presented power divider, a source-load cross-coupling is introduced by placing input and output coupling lines. An in-phase power divider with passband-filtering response has been designed, fabricated and measured. The measured return loss and insertion loss of the fabricated power divider are 22 and 1.3 dB at 2.45 GHz, respectively. The 3 dB operating bandwidth of the fabricated power divider is 175 MHz. The total area of the fabricated power divider is 0.15λg × 0.3λg. The measured results verify the predicted attractive features. © The Institution of Engineering and Technology 2014.

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Song, K., Ren, X., Chen, F., & Fan, Y. (2014). Compact in-phase power divider integrated filtering response using spiral resonator. IET Microwaves, Antennas and Propagation, 8(4), 228–234. https://doi.org/10.1049/iet-map.2013.0201

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