Circularly Polarized Receiving Antenna Incorporating Two Helices to Achieve Low Backscattering

We propose to use an antenna composed of two orthogonal helices as a low-scattering sensor. The vector effective length is derived for the antenna using the small dipole approximation for the helices. The antenna can transmit and receive circular polarization in all directions with the Huygens'...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2012-07, Vol.60 (7), p.3471-3475
Main Authors: Karilainen, A. O., Tretyakov, S. A.
Format: Article
Language:English
Subjects:
Antenna radiation patterns
Antennas
Applied sciences
Approximation
Backscatter
Backscattering
Conjugates
Dipole antennas
Exact sciences and technology
Helices
Load modeling
Loaded antennas
Mathematical analysis
Radiocommunications
Receiving
Receiving antennas
Scattering
sensor
Telecommunications
Telecommunications and information theory
Vectors (mathematics)
Wires
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We propose to use an antenna composed of two orthogonal helices as a low-scattering sensor. The vector effective length is derived for the antenna using the small dipole approximation for the helices. The antenna can transmit and receive circular polarization in all directions with the Huygens' pattern. We observe that the antenna geometry does not backscatter, regardless of the polarization, when the incidence direction is normal to the plane of the helices. Scattered fields, scattered axial ratio, and the scattering cross section are presented. We show that the zero-backscattering property holds also for the antenna when it is capable to receive all the available power with conjugate loading. The approximate analytical model is validated with full-wave simulations.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2012.2196958