A Novel Compact Low-Pass Filter using Defected Ground Structure for Sharp Transition Band
Keywords:
Bandpass, band-reject, defected ground structure (DGS), maximally flat prototype, roll-off rateAbstract
This paper presents a simple technique to design a low-pass filter using defected ground structure (DGS) having a remarkable sharp response in transition band and rejection better than -20 dB up to 20 GHz. The fabricated filter has a 3 dB cutoff frequency at 3.4 GHz and it is as small as 22 mm × 12 mm. The insertion loss in the pass-band is less than 0.6 dB from DC to 3.1 GHz. The design of the filter is simple and it gives desired frequency response. Measured results show good agreement with simulated ones.
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References
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