Reconfigurable multiband bandpass filters using short bridges resembling MEMS or pin diodes

A simple technique is used to design a new compact reconfigurable multiband bandpass filter (BPF). The proposed technique is very feasible for reconfigurable operation. The concept is experimentally validated by placing solder bridges across filter structure at the appropriate positions. The proposed structure has very minor effect on the performance of the original multiband filter, due to minor losses of the short bridges. The responses achieved, range from a single UWB BPF to triple-band BPF. Excellent agreement of measured results with the simulations is observed.