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To address part of the requirements of the emerging technologies such as multiradio communication, wireless sensor networking, and real-time imaging, miniaturized multi-band devices have been realized using different techniques including metamaterial structures and reconfigurable antennas. In the designing stage, an optimization procedure which invokes a simulation tool to model the structure is used...
This letter presents a switchable diplexer composed of a stepped-impedance distributed coupling feeding line, four different quarter-wavelength stepped-impedance resonators (SIRs), two shunt open stubs, two p-i-n diodes, and bias circuitry. Compared with previous works, the proposed circuit features compactness, wide stopband, high selectivity, and independently switchable channels. To suppress harmonics,...
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