A while back I was attending an iconic bluegrass artist’s concert with a friend. As the night neared its end, my buddy was ...

Abstract: The cascaded-resonator (CR)-based filter structure has been proposed in previous works as a convenient approach to the dynamic harmonic analysis. This CR filter can be with multiple ...

Abstract: In this letter, a novel quadruple-mode resonator bandpass filter (BPF) with tunable bandwidth is proposed. By using two types of microwave varactors to tune the resonant frequencies and ...