This paper proposes the design of a mixed-mode universal biquad configuration, which realizes generic filter functions in all four possible modes, namely voltage mode (VM), current (CM), transadmittance (TAM), and transimpedance (TIM). The architecture employs two differencing buffered amplifiers (VDBAs), resistors capacitors, can provide lowpass (LP), bandpass (BP), highpass (HP), bandstop (BS...

Simultaneously cycling space weather parameters may show high correlations even if there is no immediate relationship between them. We successfully remove diurnal cycles using spectral subtraction, and both longer (e.g., the 27 days solar cycle) with a difference transformation. Other methods of cycle removal (daily averaging, moving averages [MAs], simpler subtraction regression) are less succ...

The ever-growing field of wireless communication requires efficient radio frequency transceivers with tunable absorptive bandstop filters that can prevent the interference out-of-band and reflected signals. This paper presents 4-pole using folded coupled-lines an inductor. A filter transfer function is achieved to obtain coupling diagram 45° electrical-length transmission-line source/load coupl...

An ultra-wideband band-stop plasmonic filter (UWB-BSF) in mid-infrared (MIR) range based on metal–insulator–metal (MIM) waveguide coupled with a hexagonal resonator is proposed this work. Using RSoft CAD commercial software, the designed BSF numerically and theoretically investigated by 2D Finite-Difference Time-Domain method. To enhance BSFs system mid-infrared, obtaining ultra-wide bandgap wi...

In this paper, a single-layer bandstop Frequency Selective Surface (FSS) is proposed for Wireless Local Area Networks (WLAN) Applications. The unit cell of the proposed FSS consists of a modification in a square patch element by the insertion of triangular shaped slots. The designs demonstrate a wide 3.8 GHz stopband in the WLAN frequency range. Moreover, it shows angular stability at various a...

1. Abstract The performances of the periodic surface structures (PSS) of different geometric shapes on the ground plane are studied. Simulated results with full wave electromagnetic analyses are in good agreement with those experimental data. The optimal structure of PSS bringing about the perturbation electromagnetic waves and power loss will be determined. The proposed wideband PBG microstrip...