Also, the interest in wireless applications has increased the need of system engineers to accurately estimate antenna gain. Many simple formulas are available for estimating gain. But, each formula has a range of applicability, and inappropriate use of these formulas will result in inaccurate gain ...
The derivation of a formula for accurate estimation of the total radiated power from a transmitting antenna for which the radiated power density is known in a finite number of points on the far-field sphere is presented. The main application of the formula is determination of directivity from po...
Directivityis a fundamental antenna parameter. It is a measure of how 'directional' an antenna's radiation pattern is. An antenna that radiates equally in all directions would have effectively zero directionality, and the directivity of this type of antenna would be 1 (or 0 dB). [Silly side ...
The directivity of the antenna can be defined as the measure of the radiation pattern concentration in a particular direction which is expressed in decibels. If the directivity is higher, then the concentration of the beam radiated through an antenna is more. An antenna that equally radiates withi...
An antenna directivity control system includes an antenna including a plurality of antenna elements, feeding points for the plurality of antenna elements being mutually different; a
This paper presents a new formula for directivity calculation of any similar array. In its proving process, some" unknowable" skills are used , and an explicit physical meaning is shown. Further more, a fortran program based on the formula works very significantly, for it has mot only giver ...
Horn antennaconical hornThe formula for directivity of conical horns has been recreated. Computer calculated curves are given that differ slightly from those of Gray and Schelkunoff, circa 1940, that are often reproduced in books.doi:10.1002/mop.4650011011R....
This directivity is the ratio of the maximum value of the power radiated per unit solid angle to the average power radiated per unit solid angle. Antenna array provides capability of a steerable beam, high gain etc. calculating directivity of an antenna array by using formula increases the ...
A procedure for evaluating the directivity of an antenna under test from near-field measurements on a spherical scanning surface is proposed. It uses a formula in closed form for computing the total radiated power from the knowledge of the radiation intensity samples on the far-field sphere. ...
Computation of antenna directivity from cylindrical near-field measurements, ArtículoAn effective technique is proposed in this paper for evaluating the directivity of an antenna under test from near-field measurements on a cylinder. It employs a closed-form formula for computing the total radiated ...