Results 21 to 30 of about 20,890 (228)

Low-Loss Wide-Tuning-Range Three-Pole Frequency-Agile Bandpass Diplexer With Identical Constant Absolute Bandwidth

open access: yesIEEE Access, 2019
This paper presents a low-loss, high-isolation and wide-frequency-tuning-range (FTR) (45%) implementation of the three-pole frequency-agile bandpass diplexer (FA-BPD) with identical constant absolute bandwidth (IC.ABW). The FA-BPD includes two three-pole
Zhiyou Li   +5 more
doaj   +1 more source

Synthesis Applied 4th-Order Constant Absolute Bandwidth Frequency-Agile Bandpass Filter With Cross-Coupling

open access: yesIEEE Access, 2018
A novel 4th-order cross-coupled electrical tunable bandpass filter with constant absolute bandwidth and high frequency selectivity is proposed. The electric coupling coefficients and the magnetic coupling coefficients of the cross-coupled resonators and ...
Dengyao Tian   +2 more
doaj   +1 more source

Effectiveness of adjusted bandwidth knowledge of results in motor learning

open access: yesCogent Psychology, 2022
Introduction: Knowledge of results (KR) is a method of augmented feedback where frequency or timing varies depending on the individual’s performance. In previous studies, bandwidth (BW) KR was not established according to the individual’s performance ...
Jun Yabuki   +4 more
doaj   +1 more source

Design of a Microstrip Three-State Switchable and Fully Tunable Bandpass Filter With an Extra-Wide Frequency Tuning Range

open access: yesIEEE Access, 2020
In this study, a new method and structure are proposed to design of a switchable and fully tunable microstrip bandpass filter (BPF). The central frequency and bandwidth (or the resonance frequency of the resonators, coupling coefficient between ...
Chi-Feng Chen
doaj   +1 more source

A Widely Tunable Compact Bandpass Filter Based on a Switched Varactor-Tuned Resonator

open access: yesIEEE Access, 2019
This paper presents a compact tunable bandpass filter (BPF) based on a switched varactor tuned resonator with a wide frequency-tuning range and a constant absolute bandwidth (ABW).
Minjae Jung, Byung-Wook Min
doaj   +1 more source

Propagation of THz radiation in air over a broad range of atmospheric temperature and humidity conditions

open access: yesScientific Reports, 2023
As the need for higher data rates for communication increases, the terahertz (THz) band has drawn considerable attention. This spectral region promises a much wider bandwidth and the transmission of large amounts of data at high speeds.
Fatima Taleb   +12 more
doaj   +1 more source

Evidence for adjustable bandwidth orientation channels

open access: yesFrontiers in Psychology, 2014
The standard model of early vision claims that orientation and spatial frequency are encoded with multiple, fixed-bandwidth, and approximately independent channels. The standard model was developed from observer data that used deterministic patterns such
Christopher Patrick Taylor   +2 more
doaj   +1 more source

FREQUENCY-TUNABLE BANDPASS FILTERS WITH CONSTANT ABSOLUTE BANDWIDTH AND IMPROVED LINEARITY

open access: yesProgress In Electromagnetics Research Letters, 2012
This paper presents a frequency-tunable bandpass fllter with constant absolute bandwidth and improved linearity. The proposed resonator is composed of an open-ended transmission line with back-to-back varactor diodes loaded at one end. The back-to-back varactor diodes are used to enhance the linearity of the fllter, which is better than that of the ...
Feng Lin Yu, Xiu Yin Zhang, Yi Bin Zhang
openaire   +1 more source

Design of Novel Reconfigurable Filter With Simultaneously Tunable and Switchable Passband

open access: yesIEEE Access, 2019
This paper presents a new loading scheme for adding the varactor and PIN diodes into a quarter-wavelength (λ/4) resonator. Based on this, a novel reconfigurable filter with simultaneously tunable and switchable passband is introduced.
Yu-Jing Zhang, Jing Cai, Jian-Xin Chen
doaj   +1 more source

Observer‐Based Adaptive Event‐Triggered Tracking Control for Fuzzy TS Systems With Premise Mismatch

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
This paper presents an adaptive logistic event‐triggered observer‐based tracking controller for Takagi‐Sugeno fuzzy systems under constrained inputs and network delays. Leveraging a hybrid LMI and Secretary Bird Optimization approach, this strategy significantly minimizes communication overhead and computational burden while ensuring optimal reference ...
Oussama Djadane   +3 more
wiley   +1 more source

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