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An ultra-wide band (UWB) band-pass filter (BPF) based on signal interference technique is presented in this letter. The filter is connected in parallel short-ended interdigital coupled lines and a transmission line. The filter has a fractional bandwidth of 108% and two transmission zeros at both sides of pass-band, which turns into good pass-band selectivity. The filter achieves a small size of 10...
An ultra-wide band (UWB) band-pass filter (BPF) based on signal interference technique is presented in this letter. The filter is connected in parallel short-ended interdigital coupled lines and a transmission line. The filter has a fractional bandwidth of 108% and two transmission zeros at both sides of pass-band, which turns into good pass-band selectivity. The filter achieves a small size of 10...
A compact filtering antenna with high band-edge gain selectivity using a composite right-/left-handed (CRLH) resonator and a defected ground structure is presented. The CRLH resonator resonates at the zeroth-order mode and acts as the first stage of the corresponding filter; an octagonal patch acts as a radiator as well as the last stage of the filter. The design procedure follows the circuit approach...
We report experimental observations and numerical simulation results on the spectrum moving, narrowing, broadening, and wavelength switching of dissipative solitons (DSs) in an all-normal-dispersion Yb-fiber laser that is passively mode-locked by using the nonlinear polarization rotation (NPR) technique. We found numerically that the DS spectrum moving, together with spectrum narrowing/broadening,...
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