A microstrip bandpass filter
is designed to have a fractional bandwidth of 2.94% (FBW = 0.0294) at a midband frequency [f.sub.0] = 2.0 GHz.
Kim, "Compact microstrip square open-loop bandpass filter
using open stubs" Electronics Letters, vol.
Zhu, "Highly selective differential-mode wideband bandpass filter
for UWB application," IEEE Microw.
Chen, "A novel wideband bandpass filter
using triple-mode slotline ring resonator," Progress In Electromagnetics Research Letters, Vol.
The design parameters of the bandpass filter
, i.e., the coupling coefficients and external quality factor can be determined in terms of low-pass prototype filter parameters ([g.sub.1], [g.sub.2], [J.sub.1] and [J.sub.2]) and the relationship between the bandpass design parameters and the low-pass parameters are determined using the formulas below .
Hong, "Ultra wideband bandpass filter
using embedded stepped impedance resonators on multilayer liquid crystal polymer substrate," IEEE Microwave and Wireless Components Letters, vol.
Chu, "Compact ultra-wideband (UWB) bandpass filter
using dual-stub-loaded resonator (DSLR)," IEEE Microw.
Yamashita, "Bandpass filter
using parallel coupled stripline stepped impedance resonators," IEEE Transactions on Microwave Theory and Techniques, vol.
Gao, "Compact quintuple-mode UWB bandpass filter
with good out-of-band rejection," Progress In Electromagnetics Research Letters, Vol.
In this paper, a compact UWB bandpass filter
using modified CRLH unit cells is implemented.
The bandpass filter
is one of the most important components in modern RF/microwave systems [1-3].
In  and , a continuously frequency and bandwidth tunable bandpass filter
using compact hairpin resonators and a combline structure was described.