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STUDY OF FREQUENCY INDEPENDENT ANTENNAS
1961Abstract : An investigation was made of frequency-independent antenn fro the point of view of designing the antennas for any radiation pattern and polarization. Solutions of Maxwell's equations were discovered which explain the theory of fr uency independent antennas. The effect of curvatur on the current distribution is strikingly demonstrated but the
R. SUSSMAN +4 more
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Frequency Independent Nonlinear Feedforward Phase Estimator
Wireless Personal Communications, 1997The major focus of this work deals with fast and efficient phase estimation in an additive white Gaussian noise environment, where the received signal is a function of both phase and frequency error (ΔΦ,Δf). The paper proposes a modified version of the Viterbi and Viterbi phase estimator, and compares this modified version with the original.
R. Di Girolamo, T. Le-Ngoc
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Broadband Multibeam Frequency-Independent Antenna Arrays
2019 Radiation and Scattering of Electromagnetic Waves (RSEMW), 2019A review of methods for constructing multibeam antenna arrays forming frequency-independent radiation characteristics in a wide frequency band is presented. A comparison of the methods is given and it is shown that phase methods are more preferable for multibeam antenna arrays.
N. I. Bobkov, I. N. Bobkov
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Quasiperiodic Oscillator with Two Independent Frequencies
2014Quasiperiodic oscillations are widespread in nature and are an important subject of research in the natural sciences. Their peculiarity lies in the fact that they include two or more independent frequencies in the oscillation spectrum: $$\displaystyle{ x(t) = x\big[\phi _{1}(t),\phi _{2}(t),\ldots,\phi _{p}(t)\big]\;, }$$ (12.1) where ϕ i (t)
Vadim S. Anishchenko +2 more
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The frequency independence of fractal antennas
2013 IX Internatioal Conference on Antenna Theory and Techniques, 2013Approach of fields and contours in an inhomogeneous medium is carried out by means of feeding into in consideration of fractal geometry devices. Fractal allocation electrical and magnet moments of alpha-poles is spotted on differintegral geometry devices.
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Directive frequency independent arrays
IEEE Transactions on Antennas and Propagation, 1965K. Mei, M. Moberg, V. Rumsey, Y. Yeh
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Frequency Independence Of Helicon Discharges
Proceedings of 1994 IEEE 21st International Conference on Plasma Sciences (ICOPS), 2005D.D. Blackwell +3 more
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