Measurement of a Weak Satellite Beacon Level at 27.5 GHz with a Dual Circular Antenna Array [Measurements Corner]

2014 ◽  
Vol 56 (5) ◽  
pp. 174-183
Author(s):  
J. Letschnik ◽  
H. Enke ◽  
F. Schurig ◽  
L. Schelde ◽  
U. Walter
Keyword(s):  
Antenna Array ◽  
Array Measurements ◽  
Satellite Beacon ◽  
Weak Satellite ◽  
Circular Antenna Array

Focus Beam Synthesis With Circular Antenna Array Based On Radial Waveguide Feed Network

2021 ◽  
pp. 1-1
Author(s):  
Zhao Yang ◽  
Wenxian Zheng ◽  
Daniele Inserra ◽  
Jian Li ◽  
Yongjun Huang ◽  
...  
Keyword(s):  
Antenna Array ◽  
Focus Beam ◽  
Feed Network ◽  
Radial Waveguide ◽  
Circular Antenna Array

scholarly journals Experimental evaluation of spectral efficiency from a circular array antenna producing a Laguerre–Gauss mode

2020 ◽  
Vol 7 (12) ◽  
pp. 201711
Author(s):  
Ben Allen ◽  
Timothy D. Drysdale ◽  
Chris Stevens
Keyword(s):  
Phase Shift ◽  
Antenna Array ◽  
Spectral Efficiency ◽  
Field Measurements ◽  
Modulation Scheme ◽  
Phase Shift Keying ◽  
Additional Degree ◽  
Shift Keying ◽  
Mode Purity ◽  
Circular Antenna Array

We present the four-dimensional volumetric electromagnetic field measurements ( x , y , z and frequency) of the complex radiated field produced by an 8-element circular antenna array. The array is designed to produce a Laguerre–Gauss (LG) mode l = +1 over the frequency range of 9–10 GHz. We evaluate our findings in terms of far-field LG mode purity and spectral efficiency in terms of the quadrature amplitude modulation (QAM) modulation scheme that can be supported. The application of LG modes in radio systems is as a means of multiplexing several data streams onto the same frequency, polarization and time slot, thus making a highly spectrally efficient transmission system or enhancing radar systems by means of exploiting mode behaviour as an additional degree of freedom. Our results show that for the circular antenna array, we find that mode purity is sufficient to support binary phase shift keying or quadrature phase shift keying modulation over a 0.3 GHz bandwidth, which corresponds to a spectral efficiency of 1.5 b s −1 Hz −1 per mode. Closer to the antennas' design frequency, 256QAM modulation may be supported over a 0.05 GHz band, and which corresponds to a spectral efficiency of 11 b s −1 Hz −1 per mode. We anticipate the practical insights provided in this paper contribute to the successful design of such systems.

A Fair Comparison of Virtual to Full Antenna Array Measurements

2018 ◽  
Author(s):  
Stefan Pratschner ◽  
Sebastian Caban ◽  
Daniel Schutzenhofer ◽  
Martin Lerch ◽  
Erich Zochmann ◽  
...  
Keyword(s):  
Antenna Array ◽  
Array Measurements ◽  
Fair Comparison
Sign in / Sign up

Export Citation Format

Share Document