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Band-pass filter is the basic component in microwave/RF integrated circuit. It plays the extremelyimportant role in communication systems such as wireless, radar and GPS navigation systems. Thisproject develops a passive narrowband band-pass filter which works in X-band spectrum (8GHz-12GHz).The filter is fabricated on a 400 µm thickness sapphire substrate with a 0.25µm thickness BST thin filmdeposited using a large area pulsed laser deposition system. Compared with traditional microstripfilters, it has miniaturized dimensions and good frequency tunability. The filter is a grounded coplanarwaveguide structure which has 2.4mm by 2.4mm dimension with center frequency at 10GHz, thebandwidth is 0.4GHz, the insertion loss is 1.7dB and the quality factor is 25.

Publication Date


Project Designation

Graduate Research

Primary Advisor

Guru Subramanyam

Primary Advisor's Department

Electrical and Computer Engineering


Stander Symposium poster

X-band Miniaturized Coplanar Waveguide Band-pass filter with Coupled Resonator