Fixed‐frequency conical beam scanning antenna array with small ripple for Satcom‐on‐the‐Move system
Sign Up to like & getrecommendations! Published in 2019 at "Microwave and Optical Technology Letters"
DOI: 10.1002/mop.32176
Abstract: A conical beam antenna array with fixed‐frequency scanning capability is proposed. Twelve open waveguide radiating elements filled with microwave ferrite on a metal ground plane are evenly distributed around a circle to realize small gain… read more here.
Keywords: conical beam; antenna array; beam; fixed frequency ... See more keywords
The uniqueness of the inverse transmission problem with phaseless far field data at a fixed frequency
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Mathematical Analysis and Applications"
DOI: 10.1016/j.jmaa.2021.125691
Abstract: Abstract In this paper, we establish the unique determination results for inverse acoustic scattering of a penetrable anisotropic obstacle by using phaseless far field data at a fixed frequency. It is well-known that the modulus… read more here.
Keywords: far field; field; data fixed; fixed frequency ... See more keywords
Maximum attainable energy in a fixed-frequency cyclotron
Sign Up to like & getrecommendations! Published in 2019 at "European Journal of Physics"
DOI: 10.1088/1361-6404/ab4685
Abstract: We consider a problem of finding the maximum attainable energy at a cyclotron as an exercise in the introductory relativity course and comment on some subtle points of the solution. read more here.
Keywords: cyclotron; attainable energy; fixed frequency; maximum attainable ... See more keywords
Pulsed Reset Protocol for Fixed-Frequency Superconducting Qubits
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review Applied"
DOI: 10.1103/physrevapplied.10.044030
Abstract: Improving coherence times of quantum bits is a fundamental challenge in the field of quantum computing. With long-lived qubits it becomes, however, inefficient to wait until the qubits have relaxed to their ground state after… read more here.
Keywords: state; reset protocol; pulsed reset; frequency superconducting ... See more keywords
Fixed Frequency Beam-Scanning HMSIW-Based Leaky-Wave Antenna Composed of Circular Slots in V-Shape Configuration
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Access"
DOI: 10.1109/access.2021.3070195
Abstract: A new reconfigurable slotted antenna is presented in this manuscript. The proposed antenna is realized on a half-mode substrate integrated waveguide (HMSIW). The beam-steering is achieved using embedded varactor diodes in circular cells. Sweeping the… read more here.
Keywords: frequency beam; proposed antenna; fixed frequency; beam ... See more keywords
Design of Fixed-Frequency Pulsewidth-Modulation-Based Sliding-Mode Controllers for the Quadratic Boost Converter
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Transactions on Circuits and Systems II: Express Briefs"
DOI: 10.1109/tcsii.2016.2546902
Abstract: The steady-state regulation error in power converters that use the pulsewidth-modulation (PWM)-based sliding-mode (SM) controllers can be alleviated via the use of a double-integral term of the state variables in the sliding surface. However, this… read more here.
Keywords: pulsewidth modulation; fixed frequency; inductor; controller ... See more keywords
A Phase-Shift-Modulated LLC-Resonant Micro-Inverter Based on Fixed Frequency Predictive-MPPT
Sign Up to like & getrecommendations! Published in 2020 at "Energies"
DOI: 10.3390/en13061460
Abstract: Maximum Power Point Tracking (MPPT) control is an essential part of every photovoltaic (PV) system, in order to overcome any change in ambient environmental conditions and ensure operation at maximum power.. Recently, micro-inverters have gained… read more here.
Keywords: predictive mppt; mppt; fixed frequency; frequency predictive ... See more keywords