Tiny Integrated Network Analyzer for Noninvasive Measurements of Electrically Small Antennas
نویسندگان
چکیده
منابع مشابه
SMALL ANTENNAS Basic Principles of Electrically Small Antennas
E lectrically small antennas have been an important part of communications engineering since the beginning. Whether they are small compared to the extremely long wavelengths used at the lowest radio frequencies, or intended to save space in GHz-range wireless devices, the basic principles are the same. This tutorial will review those principles, with primary attention to describing the performa...
متن کاملMetamaterial-Based Efficient Electrically Small Antennas
A metamaterial paradigm for achieving an efficient, electrically small antenna is introduced. Spherical shells of homogenous, isotropic negative permittivity (ENG) material are designed to create electrically small resonant systems for several antennas: an infinitesimal electric dipole, a very short center-fed cylindrical electric dipole, and a very short coaxially-fed electric monopole over an...
متن کاملOptimization of the Bandwidth of Electrically Small Planar Antennas
The bandwidth limitations of resonant, electrically small antennas that fully occupy a spherical volume are well defined by the inverse of the Chu-limit or the lower bound on quality factor. Recently, Gustafsson et al developed lower bounds for the Q of antennas of arbitrary shape. We have previously described antenna designs fully occupying a spherical volume and a cylindrical volume that exhi...
متن کاملTopology Optimization of Metamaterial-based Electrically Small Antennas
A topology optimized metamaterial-based electrically small antenna configuration that is independent of a specific spherical and/or cylindrical metamaterial shell design is demonstrated. Topology optimization is shown to provide the optimal value and placement of a given ideal metamaterial in space to maximize far-field radiated power.
متن کاملDevelopment of Electrically Small Planar Antennas with Matching Circuit
We designed and fabricated an electrically small antenna (ESA) with coplanar waveguide (CPW) matching circuit. Matching circuit is realized by using interdigital gap and transmission line. We designed ESA with the aid of the commercial three-dimensional electro magnetic field simulator. We also made experiments on the ESA with CPW matching circuits using patterned circuit board.
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ژورنال
عنوان ژورنال: IEEE Transactions on Microwave Theory and Techniques
سال: 2016
ISSN: 0018-9480,1557-9670
DOI: 10.1109/tmtt.2015.2504475