6 articles in this issue
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Lukas Langhammer,Jan Jerabek
Two new circuits of 2nd order universal frequency filter designed using signal-flow graphs method are presented. Both filters were proposed in single-ended and fully-differential forms. Multiple-output current follower (MO-CF) and digi... see more
Jiri Minar,Kamil Riha,Ales Krupka,Hejung Tong
The paper proposes a novel method for detection of macula in medical image of human eye – retinal fundus images, that can be used in ophthalmology for detecting various eye’s diseases as glaucoma, diabetic retinopathy or macula oedema. The method utilizes... see more
Sajjad Alizadeh,Hossein Khaleghi Bizaki,Reza Saadat
Conventional Time Reversal (TR) technique suffers from performance degradation in time varying Multiple-Input Multiple-Output Ultra-Wideband (MIMO-UWB) systems due to outdating Channel State Information (CSI) over time progressions. That is, the outdated ... see more
Mohammed Zidane,Safi said,Ahmed Boumezzough,Miloud Frikel
Chandra Kamal Borgohain,Chakresh Kumar,Satyajit Bora
In this paper we have implemented an all-optical OR-gate using simultaneous Four-Wave Mixing (FWM) and Cross-Gain Modulation (XGM) in a semiconductor optical amplifier (SOA).Which incorporates two semiconductor optical amplifiers (SOAs).The proposed OR lo... see more