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Engineering Slow‐Carrier Interfacial Recombination Enables Tailored Spectral Response
Advanced Science, EarlyView.This work demonstrates that weak‐drift slow carriers are preferentially captured at generic semiconductor surfaces/interfaces and recombine. This process is manipulated to achieve tailored spectral response. A tens of µm‐wide depletion region is created to observe surface collection rates for photocarriers generated at different positions.
Yibo Zhang +5 more
wiley +1 more source
Impact of Increasing Antenna Model Complexity on Microwave Tomography Using DBIM. [PDF]
Sensors (Basel)Vasileiou T, Koutsoupidou M, Kosmas P.
europepmc +1 more source
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Modified folded dipole antenna
Proceedings of the International Conference & Workshop on Emerging Trends in Technology, 2011This paper describes experimentally how a folded dipole antenna is better in performance than a simple dipole antenna and also describes an alternate way to design folded dipole antenna compatible with loop antenna to generate circular polarized wave.
N. G. Sharma +3 more
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Antenna factors of dipole and monopole antennas
Proceedings of 20th Biennial Conference on Precision Electromagnetic Measurements, 2002Antenna factors of dipole antennas in the frequency range 20 MHz to 600 MHz have been determined to an uncertainty of /spl plusmn/0.1 dB (95%CL) and of monopole antennas in the range 10 MHz to 100 MHz to an uncertainty of /spl plusmn/0.15 dB. This leads to an advance in the precision with which electric field strength of free-space signals can be ...
M.J. Alexander, M.J. Salter
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Transient Response of a Dipole Antenna
Journal of Mathematical Physics, 1961The current distributed for a dipole antenna driven by a step-function voltage is found shortly after the switch-on of the voltage.
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Transient Response of a Dipole Antenna
Journal of Mathematical Physics, 1962The transient current in a long dipole antenna excited by a step-function voltage across an infinitesimal center gap has recently been calculated by Wu. A simpler derivation of Wu's result is given using double Fourier transformation.
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Proceedings of IEEE Antennas and Propagation Society International Symposium, 2002
The concept of extending the operating bandwidth of a dipole has been investigated, and two bandwidth extension approaches were studied. The first approach involves the use of parasitic elements to physically change the length of the dipole. The second approach involves capacitively loading a dipole via varactor diodes to produce a travelling-wave ...
D.J. Roscoe +4 more
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The concept of extending the operating bandwidth of a dipole has been investigated, and two bandwidth extension approaches were studied. The first approach involves the use of parasitic elements to physically change the length of the dipole. The second approach involves capacitively loading a dipole via varactor diodes to produce a travelling-wave ...
D.J. Roscoe +4 more
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Compact dipole antenna for implantable devices
2014 International Symposium on Antennas and Propagation Conference Proceedings, 2014A miniaturized implantable dipole antenna is presented for industrial, scientific, and medical (ISM) (2.4–2.48 GHz) applications. The proposed antenna consists of one pair of folded arms and a T-shaped tuning stub. Whole structure is printed on an FR4 substrate with dimensions of 11×6×0.8 mm3 and suitable for medical applications.
Shun-Yun, Lin +3 more
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Printed Dipole Antenna with Stepped-Width Dipoles
2020 1st International Conference Problems of Informatics, Electronics, and Radio Engineering (PIERE), 2020The new printed dipole antenna is presented in the paper. The main advantage of the antenna in comparison with classic printed dipole antenna is a small length of dipoles due to their stepped configuration. The antenna works at two central frequencies simultaneously and can be used both as a standalone antenna and as a part of antenna arrays.
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2014
In this chapter we will study some simple dipole type configurations that can provide a broader bandwidth: the cylindrical dipole and biconical antenna. In addition, the chapter introduces the folded dipole antenna, which can provide better matching characteristics than that of the single dipole.
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In this chapter we will study some simple dipole type configurations that can provide a broader bandwidth: the cylindrical dipole and biconical antenna. In addition, the chapter introduces the folded dipole antenna, which can provide better matching characteristics than that of the single dipole.
openaire +1 more source