Omnidirectional Slots Antenna PDF Download
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Author | : Junping Geng |
Publisher | : Springer Nature |
Total Pages | : 188 |
Release | : 2020-12-03 |
Genre | : Technology & Engineering |
ISBN | : 9811590893 |
Download Omnidirectional Slots Antenna Book in PDF, ePub and Kindle
Omnidirectional antenna with high gain, low profile, vertical polarization, even CP polarization is very difficult to design, although it is from the dipole. In this book, a novel idea that the running wave in the coaxial wire is disturbed by the orthogonal slot array on the cylindrical metal shell is introduced, which radiates the CP wave in omni-direction. When feeding on two ends of the coaxial wire respectively, there will appear left hand circularly polarized (LHCP) omnidirectional radiation or right hand circularly polarized (RHCP) omnidirectional radiation. By introducing the T-shaped feed structure, the coaxial wire with slot array can conveniently produce the LHCP and RHCP radiation diversity with one end feeding. In the further, combining with the directional antenna, it will generate the pattern diversity in the half-sphere space. The antenna of the coaxial wire with slot array can further transform into conical CP beam antenna if the coaxial wire becomes into a conical frustum. By introducing the PIN diode into the slot, the antenna of the coaxial wire with slot array can radiate the reconfigurable directional beam by switching the states of the PIN diodes. By introducing a novel switchable microwave circuit, the omnidirectional /directional pattern switchable antenna can be realized easily.This book proposes a continues method to develop the potentialities of the omnidirectional antenna. And the readers can study the method or ideas of the omnidirectional slots antenna, even graft the CP or diversity methods to other antennae.
Author | : W. F. Croswell |
Publisher | : |
Total Pages | : 66 |
Release | : 1968 |
Genre | : Aperture antennas |
ISBN | : |
Download A Quasi-omnidirectional Slot Array Antenna for Spacecraft Use at Microwave Frequencies Book in PDF, ePub and Kindle
Author | : 耿军平 |
Publisher | : |
Total Pages | : 0 |
Release | : 2022 |
Genre | : Antenna radiation patterns |
ISBN | : 9787313271877 |
Download Omnidirectional Slots Antenna Book in PDF, ePub and Kindle
Author | : Stanley Irving Cohn |
Publisher | : |
Total Pages | : 91 |
Release | : 1952 |
Genre | : |
ISBN | : |
Download Omnidirectional Slot Antenna Arrays Book in PDF, ePub and Kindle
Author | : R. W. BICKMORE |
Publisher | : |
Total Pages | : 1 |
Release | : 1954 |
Genre | : |
ISBN | : |
Download Omni-directional Annular-slot Antennas (section I). Matching Networks for Annular Slot Antennas (section Ii). Book in PDF, ePub and Kindle
Author | : W. F. Croswell |
Publisher | : |
Total Pages | : 56 |
Release | : 1968 |
Genre | : |
ISBN | : |
Download A Quasi-omnidirectional Slot Array Antenna for Spacecraft Use at Microwave Frequencies Book in PDF, ePub and Kindle
Author | : Robert William Bickmore |
Publisher | : |
Total Pages | : 60 |
Release | : 1954 |
Genre | : |
ISBN | : |
Download Omni-directional Annular Slot Antennas Book in PDF, ePub and Kindle
Author | : Stuart A. Long |
Publisher | : |
Total Pages | : 64 |
Release | : 1974 |
Genre | : Antenna radiation patterns |
ISBN | : |
Download A Theoretical and Experimental Investigation of Combinations of Slot and Linear Antennas Book in PDF, ePub and Kindle
The combination of a linear antenna and a slot antenna can be used to provide a relatively isotropic radiation pattern when the dipole is perpendicular to the plane of the slot. The theoretical far field radiation pattern of a dipole flanked by a two-element array of slot antennas is formulated. The fields for a variety of relative phasings between the elements of the combination antenna are calculated and the degree of approximation to an isotropic source in the sense of the total field noted. An experimental antenna was fabricated and the radiated fields measured with good agreement found with the theoretical formulas. (Author).
Author | : Bin Zhou |
Publisher | : |
Total Pages | : |
Release | : 2017 |
Genre | : Technology |
ISBN | : |
Download Omnidirectional Circularly Polarized Antenna with High Gain in Wide Bandwidth Book in PDF, ePub and Kindle
A novel omnidirectional circularly polarized (CP) slot array antenna with high gain is proposed, which is based on the coaxial cylinder structure, and the orthogonal slots radiated the circular polarization wave around the cylinder. Further, the improved dual circularly polarized (CP) omnidirectional antenna based on slot array in coaxial cylinder structure is presented too, and two ports are assigned in its two side as left hand circularly polarized (LHCP) port and right hand circularly polarized (RHCP) port, respectively. The simulation and experiment results show their novelty and good performance of omnidirectional circular polarization with about 5 dBi gain in 5.2-5.9 GHz.
Author | : Thomas A. Milligan |
Publisher | : John Wiley & Sons |
Total Pages | : 646 |
Release | : 2005-07-11 |
Genre | : Technology & Engineering |
ISBN | : 0471457760 |
Download Modern Antenna Design Book in PDF, ePub and Kindle
A practical book written for engineers who design and use antennas The author has many years of hands on experience designing antennas that were used in such applications as the Venus and Mars missions of NASA The book covers all important topics of modern antenna design for communications Numerical methods will be included but only as much as are needed for practical applications