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A. A. Oliner (principal investigator), Lumped-Element and Leaky-Wave Antennas for Millimeter Waves, Final Report on RADC Contract No. F19628-81-K-0044,Polytechnic Institute of New York, 1984. F. J. Zucker, "Surface and leaky-wave antennas," Chapter 16 of Antenna Engineering Handbook, H. J. Jasik, Editor, McGraw-Hill, New York, 1961.
Often random wire antennas are also (inaccurately) referred to as long-wire antennas.There is no accepted minimum size, but actual long-wire antennas must be greater than at least a quarter-wavelength ( 1 / 4 λ) or perhaps greater than a half ( 1 / 2 λ) at the frequency the long wire antenna is used for, and even a half-wave may only be considered "long-ish" rather than "truly ...
An NVIS antenna configuration is a horizontally polarized (parallel with the surface of the earth) radiating element that is from 1 / 20 th wavelength to 1 / 4 wave above the ground. The optimum height of such an antenna is about 1 / 4 wavelength, and high angle radiation declines only slightly for heights up to about ...
The monthly pension benefit is determined by salary history, years of service, age, and the retirement option selected. TRF members become vested in the pension benefit after 10 years of qualified Indiana service. Members may purchase service credit for military service, out-of-state teaching, and qualified leaves of absence. [2]
American Teacher is a feature-length documentary created and produced by The Teacher Salary Project. Following the format of the book Teachers Have It Easy: The Big Sacrifices and Small Salaries of America’s Teachers, the film utilizes a large collection of teacher testimonies and contrasts the demands of the teaching profession alongside interviews with education experts and education ...
The most common monopole is a vertical, 1 / 4 wave tall, which is the minimum size for it to self-resonate. [n] A one-quarter wave monopole has a gain of 5.12 dBi when mounted over a good ground plane.
Since a half-wave dipole has a gain of 2.19 dBi and a radiation resistance of 73 Ohms, a quarter-wave ( 1 / 4 λ) monopole will have a gain of 2.19 + 3.0 = 5.2 dBi and a radiation resistance of about 36.5 Ohms. [13] The antenna is resonant at this length, so its input impedance is purely resistive.
Lehigh Career and Technical Institute (LCTI) is a career and technical institute located in Schnecksville, Pennsylvania in the Lehigh Valley region of eastern Pennsylvania. It is one of the largest career and technical institutes in the United States. LCTI has a variety of programs offered to all of its students, and also offers an academic option.