Measured Vehicular Antenna Performance PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Measured Vehicular Antenna Performance PDF full book. Access full book title Measured Vehicular Antenna Performance by Ramon L. Jesch. Download full books in PDF and EPUB format.
Author: Ramon L. Jesch
Publisher:
ISBN:
Category : Automobiles
Languages : en
Pages : 44
Get Book Here
Book Description
Author: Ramon L. Jesch
Publisher:
ISBN:
Category : Automobiles
Languages : en
Pages : 44
Get Book Here
Book Description
Author: Ramon L. Jesch
Publisher:
ISBN:
Category : Automobiles
Languages : en
Pages : 31
Get Book Here
Book Description
Author: Lars J. Foged
Publisher: Artech House
ISBN: 163081850X
Category : Technology & Engineering
Languages : en
Pages : 281
Get Book Here
Book Description
This book provides practical and theoretical aspects for automotive antenna measurements. It comprehensively covers all the information you need to design, develop, place, and use antennas and antenna systems in automotive applications. Special chapters are devoted to some of the most advanced topics in this area, including OTA measurements for Vehicle to Everything (V2X) applications, emulation of virtual drive testing, and specific topics for measurements of automotive RADAR systems. You will understand the various measurement techniques specifically for automotive antennas, including chamber design, absorbers, near-to-far field transformation, and some of the newest techniques such as the use of drones. The book presents both well accepted and standard practices and includes innovative methods that help you quickly adapt to the rapidly evolving field of automotive antenna testing today. This is an excellent reference for antenna engineers, automotive system designers, and anyone who measures and designs antennas for automotive applications.
Author: Alan W. Miller
Publisher:
ISBN:
Category : Automobiles
Languages : en
Pages : 4
Get Book Here
Book Description
Author: R. G. FitzGerrell
Publisher:
ISBN:
Category : Antennas (Electronics)
Languages : en
Pages : 156
Get Book Here
Book Description
Author: Watson P. Czerwinski
Publisher:
ISBN:
Category :
Languages : en
Pages : 14
Get Book Here
Book Description
Field intensity measurements of Antenna AT-912(XE-2)/VRC, also known as 'Improved Center-Fed Whip', are compared to measurements of a half-wave, sleeve type, vertical dipole cut to the test frequency. Each antenna, in turn, was mounted on a 3/4-ton weapons carrier vehicle. As pattern circularity was confirmed by other tests, only head-on readings were taken. The Center-Fed Whip Antenna was found to have at least the same gain as the 'unity-gain antennas' throughout the operating range of 30 to 76 mc. (Author).
Author: Dallas T. Hayes
Publisher:
ISBN:
Category : Ablation (Aerothermodynamics)
Languages : en
Pages : 84
Get Book Here
Book Description
To develop alternative solutions to Air Force problems relating to signal transmission in the presence of ionization, AFCRL undertook an extensive investigation of techniques for modifying reentry plasmas. The program included laboratory tests and a series of reentry flight experiments. This report describes the flight test of one successful technique, Teflon ablation, a passive approach that requires no internal support systems. A reentry vehicle fitted with a Teflon-coated nosecap was instrumented to measure antenna impedance mismatch, interantenna coupling, signal attenuation, and charged-particle density. The probe data showed that the local boundary-layer electron density decreased by as much as a factor of 200. The Teflon coating effected a 25-dB decrease in S-band signal attenuation. High-power antenna breakdown was modified by the presence of the ablation products. Details of the vehicle design, flight dynamics, and ablation, are presented, and the results of the Teflon-ablation technique are contrasted with those of a successful liquid-injection technique that was tested on a previous flight.
Author: J. Leon Poirier
Publisher:
ISBN:
Category : Antenna radiation patterns
Languages : en
Pages : 82
Get Book Here
Book Description
A Trailblazer II rocket was launched on 18 June 1967 from the NASA wallops Island (Va.) Rocket Test Facility to study the properties of the reentry plasma sheath and its effects on microwave antenna performance. The reentry payload consisted of three major subsystems: a plasma diagnostic system, an S- band transponder system, and an X-band telemetry system. The flight data yielded (1) measurements of the influence of the plasma on the radiation pattern distortion, signal attenuation, and impedance mismatch for an S-band slot antenna located at the stagnation point of the nose cone; (2) measurements of the plasma sheath effects on the interantenna coupling between two S-band antennas on the nose cone; and (3) determinations of the electron density profile and gradients in the boundary layer about the nose cone.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 5
Get Book Here
Book Description
This paper describes comparisons of analysis and measurements of antenna patterns on automobiles in the VHF and UHF frequency bands. The actual measurements and analysis were performed at six different frequencies ranging from 41 MHz to 918 MHz. An antenna on a vehicle in a roadway environment in the presence of Earth does not have antenna patterns or input impedances as if it were located in free space or over a perfectly conducting ground plane. Antenna patterns of a whip antenna on a vehicle were measured on an outdoor antenna range with the vehicle on a 10 meter diameter turntable. Patterns were also measured with the vehicle over real ground away from the turntable to determine the effects of the steel turntable on antenna patterns. The three-antenna gain measurement technique was used to measure antenna gain. The measured patterns and gains were compared to predictions using the Numerical Electromagnetics Code (NEC-4).
Author: Victor Rabinovich
Publisher: CRC Press
ISBN: 1351834258
Category : Technology & Engineering
Languages : en
Pages : 370
Get Book Here
Book Description
The steady evolution of wireless communication technologies continues to pave the way for the implementation of innovative services and devices in modern vehicles. These include analog and digital audio broadcasting radio, satellite radio, GPS, cell phones, and short range communication devices. Such applications require the use multiple antennas operating in different frequency ranges. Automotive Antenna Design and Applications thoroughly examines traditional and new advanced automotive antennas, including the principles, designs, and techniques used to reduce antenna dimensions without significant degradation of communication quality. The contents of this book are based on cutting-edge data collected from numerous technical papers, patents, and patent applications. It presents an overview of many commercially available automotive antennas and covers features that have become standard in automotive applications, such as printed-on car glass antennas, reduced-size helical antennas, multiband compact, printed-on dielectric and patch designs in a single package. Includes simulation examples of antenna parameters that significantly speed up the design process using software packages such as FEKO, NEC, IE3D, and Genesys Highlighting the practical aspects of antenna design, the authors present passive and active designs and describe the entire design process, including antenna simulation, prototype sample fabrication, and laboratory test measurements. The book also covers the production adjustments that can result from the demands of the real car environment. The presentation of numerous examples of passive and active automotive antennas greatly enhances this reference’s value to professionals, students, and anyone else working in the ever-evolving field of antenna design and application.
