A New Phase-shifterless Active Phase Array for Automobile Radar and Communication Systems

2006 ◽  
Author(s):  
Ling Xiang ◽  
Jiang Yonghua ◽  
Gao Weiliang ◽  
Li Jun
Keyword(s):  
Communication Systems ◽  
Active Phase ◽  
Phase Array ◽  
New Phase

Active phase array SAR antennas

2010 ◽  
Author(s):  
A Fourmault ◽  
J Uher ◽  
P Allan ◽  
C Grenier ◽  
P Arsenault
Keyword(s):  
Active Phase ◽  
Phase Array

scholarly journals Wind tunnel flux comparisons using a phase Doppler interferometer

2017 ◽  
Vol 57 (3) ◽  
pp. 281-287
Author(s):  
Roy L. Roten ◽  
Scott L. Post ◽  
Armin Werner ◽  
Majeed Safa ◽  
Andrew J. Hewitt
Keyword(s):  
Wind Tunnel ◽  
Active Phase ◽  
Spray Drift ◽  
Wind Speeds ◽  
Agricultural Application ◽  
Doppler System ◽  
Flux Measurements ◽  
Doppler Interferometer ◽  
New Phase ◽  
Maximum Retention

Abstract It is essential to know the movement of droplets in time and space (i.e. flux) when measuring and/or predicting spray drift in agricultural application. A study was performed to assess the flux measurements of a phase Doppler system against a standard monofilament system in a wind tunnel. The primary objectives of the study were to compare flux from a new phase Doppler system against 1.7 mm cotton and 2.0 mm nylon strings at varying wind speeds (1.4, 4.2, 8.3, 12.5, and 16.7 m · s−1) and spray exposures times (5, 10, 15, 30, and 60 s) with an overarching hypothesis that the active, phase Doppler is able to accurately measure the flux regardless of exposure and spray mass whereas the static string samplers are limited to a maximum retention. The phase Doppler did measure linearly as expected, however strings did not reach a point in which they loss mass; conversely, they appeared to overload with saturation. These findings are believed to be among many variables which influence the variability of previous mass balance studies.

A New Active Phase Array Based on Injection-locking Loop Technique

2006 ◽  
Author(s):  
Ling Xiang ◽  
Jiang Yonghua ◽  
Li Jun ◽  
Gao Weiliang ◽  
Ding Xueguang
Keyword(s):  
Active Phase ◽  
Injection Locking ◽  
Phase Array ◽  
Loop Technique
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