The design and evaluation of transmit and receive antennas for an ionospheric communications probe system: A. Multiband Dipole Antenna

Download
Author
Perros, Sotirios Georgios
Date
1992-12Advisor
Adler, Richard W.
Second Reader
Vincent, Wilbur R.
Metadata
Show full item recordAbstract
This thesis reports the design, performance evaluation and construction of a transmitting antenna for an HF communications probe system. A short range ionospheric communication link between Monterey, CA, (transmit site) and San Diego, CA, (receive site) was established to test the software and hardware of this probe system. The Multiband Dipole Antenna was selected as the more practical antenna for this link, using less real estate and support structure than other alternatives. The antenna was constructed and installed at the NPS beach site where the ground constants were measured accurately. Numerical Electromagnetics Code (NEC) analysis and measurements show that the antenna operates with low input VSWR ( < 1.5), is insensitive to electrical ground characteristics and has excellent radiation patterns for short range ionospheric communication links. Based on the observed signal strengths at San Diego, the antenna appears to be performing very well.
Rights
Copyright is reserved by the copyright ownerCollections
Related items
Showing items related by title, author, creator and subject.
-
Topaz II Nuclear Powered SAR Satellite
Feuerstein, M.; Agrawal, B.N. (1994);The AA4871 Spacecraft Design course is the capstone class for the M.S. in Astronautics at the Naval Postgraduate School. Thc design team integrated a Topaz If nuclear power system with an EOS Synthetic Aperture Radar to ... -
Integrated masts for ship radiofrequency electromagnetic interference mitigation – a preliminary electromagnetic characterization study (u)
Dall’Armi-Stoks, Giuseppina (Monterey, California. Naval Postgraduate School, 2011-12); NPS-EC-12-002This report provides an electromagnetic characterization analysis in order to ascertain if integrated masts are an effective ship radiofrequency electromagnetic interference mitigation strategy. Free space and fitted antenna ... -
Ultra-wideband conformal helmet antenna
Lebaric, J.; Ah-Tuan Tan (2000);This paper presents the development of an ultra-wideband (300 to 3000 MHz), vertically polarized, nearly omni-directional (in azimuth) communications antenna integrated into the camouflage cover of a standard military-issue ...