Two paralleled Ba0.25 Sr0.75 TiO3 ferroelectric varactors series connected coplanar waveguide microwave phase shifter

Please use this identifier to cite or link to this item: https://doi.org/10.1063/1.3140603

Title:	Two paralleled Ba0.25 Sr0.75 TiO3 ferroelectric varactors series connected coplanar waveguide microwave phase shifter
Authors:	Sheng, S. Wang, P. Chen, X. Zhang, X.-Y. Ong, C.K.
Issue Date:	2009
Citation:	Sheng, S., Wang, P., Chen, X., Zhang, X.-Y., Ong, C.K. (2009). Two paralleled Ba0.25 Sr0.75 TiO3 ferroelectric varactors series connected coplanar waveguide microwave phase shifter. Journal of Applied Physics 105 (11) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.3140603
Abstract:	A distributed phase shifter of coplanar waveguide (CPW) using ferroelectric (Ba0.25 Sr0.75 TiO3) film varactors with parallel-plate electrodes is presented. In order to satisfy the requirement of small dimension of the parallel-plate varactor for the design of phase shifter and impedance match of the circuit, two parallel-plate varactors of 8×10 μ m2 are connected in series. The fabricated CPW phase shifter exhibited low insertion loss of 2.3 dB and large differential phase shift of 170° at 7 GHz with a dc bias voltage of 25 V. © 2009 American Institute of Physics.
Source Title:	Journal of Applied Physics
URI:	http://scholarbank.nus.edu.sg/handle/10635/117209
ISSN:	00218979
DOI:	10.1063/1.3140603
Appears in Collections:	Staff Publications

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