Compact Hairpin Bandpass Filter with Wide Stopband and High Attenuation Using Multilayer Broadside-coupled Stripline
نویسنده
چکیده
This paper presents a compact bandpass filter with stopband and high attenuation by using multilayer folded broadside-coupled quarter-wavelength stripline resonators in a low-temperature co-fired ceramic (LTCC) substrate. The proposed bandpass filter centered at 1.1 GHz with a fractional bandwith of 4.5 % shows the first spurious frequency at 3.8 times the center frequency. In comparison to the conventional half-wavelength hairpin bandpass filter with the same passband performance, the proposed bandpass filter shows not only a 50 % size reduction but also a wider stopband from 1.3 GHz -3.8 GHz with a high rejection level up to 60 dB. Copyright © 2014 IFSA Publishing, S. L.
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