Figure 2
From: Miniaturized tri-notched wideband bandpass filter with ultrawide upper stopband suppression

The proposed tri-notched wideband filter with ultrawide upper stopband up to 32 GHz.
From: Miniaturized tri-notched wideband bandpass filter with ultrawide upper stopband suppression
The proposed tri-notched wideband filter with ultrawide upper stopband up to 32 GHz.