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Reconfigurable radio frequency (RF) circuits will be a predominant solution for future global and compact mobile terminals, which supports 2G, 3G, and LTE cellular systems in various frequency bands. A single-path configuration and use of single-band devices with distributed reconfigurable matching networks have the potential to achieve the optimum RF front-end for future multi-band mobile terminals...
This paper proposes a tunable bandpass filter that can tune its center frequency, bandwidth, and transfer function. The filter comprises tunable ring resonators and tunable J-inverters. The tunable ring resonator can change its susceptance slope parameter independently of its resonant frequency. This feature helps us to change the bandwidth and transfer function of the filter while keeping the center...
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