A New Ultracompact Narrow Bandpass Microstrip Filter Using Double-Negative Quasiplanar Cells

<div>Different subwavelength planar resonators employed in the design of miniaturized planar microwave circuits: (a) SRRs, (b) CSRRs, (c) BC-SRs which are magnetically coupled to a line, and (d) BC-SRs which are electrically coupled to a line.</div>

International Journal of Antennas and Propagation

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Figure 1

Figure 1: A New Ultracompact Narrow Bandpass Microstrip Filter Using Double-Negative Quasiplanar Cells 