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Design of a Reconfigurable Active Bandpass Filter Based on a Controllable Slope Parameter

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5 Author(s)
Hyung-Il Baek ; Dept. of Electron. Eng., Sogang Univ., Seoul, South Korea ; Young-Ho Cho ; Xu-Guang Wang ; Hye-Min Lee
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This letter presents a reconfigurable active bandpass filter based on a controllable slope parameter. The proposed filter has reconfigurable bandwidths and center frequencies, and both can be continuously changed using varactor diodes as the tuning elements. The wide tuning range of the bandwidth is achieved by adjusting the slope parameter of the resonators. This letter describes the design and testing of a two-pole reconfigurable filter with tuning ranges in the center frequency of 2.0-2.6 GHz and 3 dB bandwidth of 127-598 MHz at the center frequency of 2.15 GHz.

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Microwave and Wireless Components Letters, IEEE  (Volume:21 ,  Issue: 12 )