Directivity of uniformly spaced optimum endfire arrays with equal sidelobes

نویسندگان

چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Directivity of Uniformly Spaced Optimum Endfire Arrays With Equal Sidelobes

A mathe matical formulation is devised for a uniformly spaced and uniformly progressively phased antenna array of a given number of isotropic ele ments such that the final radiation pattern is end fire with no large bac klobe. The pallern also has the maximum number of sidelobes of equal level, modifying the result of an earlier paper, eve n when the ele ment spacing is made arbitrarily small. ...

متن کامل

On the Optimum Directivity of Uniformly Spaced Broadside Arrays of Parallel Half-Wave Dipoles (RESEARCH NOTES)

The nominal directivity for uniformly spaced broadside parallel half-wave dipoles associated with a uniform excitation is evaluated. The amplitude distribution for an optimized directivity is then obtained for different numbers of elements with the separations between the dipoles as a variable. The optimum and nominal directivities are compared for different spacings of the elements. While thes...

متن کامل

Optimum Endfire Patterns

In [2], Duhamel obtained the optimal endfire array excitation by extending the Riblet’s broadside array design method. So, similar to the Riblet’s distribution, the obtained endfire distribution is limited to odd numbered arrays. In this section, authors present a broadened formulation which can be used for both even as well as odd numbered arrays. The basic idea behind this formulation comes f...

متن کامل

Electrically Small Supergain Endfire Arrays

The theory, computer simulations, and experimental measurements are presented for electrically small two-element supergain arrays with near optimal endfire gains of 7 dB. We show how the difficulties of narrow tolerances, large mismatches, low radiation efficiencies, and reduced scattering of electrically small parasitic elements are overcome by using electrically small resonant antennas as the...

متن کامل

Optimum Directivity Patterns of Concentric Ring Arrays with Dipole Radiators for Wireless Communications

In the literature survey concentric ring arrays using isotropic radiators are reported. Sufficient data is not available to optimization of the first sidelobe level, null to null beamwidth and directivity. In this paper, the author is proposed the problem of designing concentric ring arrays with practical radiating element. The practical radiating element is considered as dipoles to achieve opt...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Journal of Research of the National Bureau of Standards, Section D: Radio Science

سال: 1965

ISSN: 0502-2568

DOI: 10.6028/jres.069d.137