In this paper, we first demonstrate a metasurface that offers spectral filter performances not yet reported for single-layer because of the limited number geometric parameters. The configuration is determined by conformational space annealing algorithm, which key toward being able to design desired frequency, bandwidth, and response type various wireless communication devices, including fifth-g...

Abstract: A new electronically tunable mixed-mode biquadratic filter with three current controlled current conveyor transconductance amplifiers (CCCCTAs) and two grounded capacitors is proposed. With current input, the filter can realise lowpass (LP), bandpass (BP), highpass (HP), bandstop (BS) and allpass (AP) responses in current mode and LP, BP and HP responses in transimpedance mode. With v...

Traveling Wave Tubes (TWTs) consist of different elements. The most important element of TWT is the RF circuit. RF circuits in helix TWTs need a dielectric support to hold the helix; this support also has an effect in electromagnetic properties of RF circuits. A novel dielectric support is proposed to reduce the second harmonic of helix TWTs. The dielectric support in this structure consists of...

Abstract The working mechanism of suggested tunable bandstop filtered with asymmetrical multiple‐mode resonator equipped tree‐shape branches is described in this letter. Because the established degree freedom, filters’ (BSFs) centre frequencies may be modified based on design approach. Meanwhile, BSFs have small dimensions and abrupt roll‐off skirts for transition bands. A technology demonstrat...