Physical Optics Modeling for the Optimization of Millimetre-Wave Personnel Scanners

2006 ◽  
Author(s):  
Beatriz Grafulla-Gonzalez ◽  
Katia Lebart ◽  
Andrew R. Harvey
Keyword(s):  
Physical Optics ◽  
Millimetre Wave

scholarly journals Design of an Anechoic Chamber for W-Band and mmWave

Electronics ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 804
Author(s):  
Pedro Pinho ◽  
Hugo Santos ◽  
Henrique Salgado
Keyword(s):  
Electrical Properties ◽  
Anechoic Chamber ◽  
Physical Optics ◽  
Millimetre Wave ◽  
Open Waveguide ◽  
Uniform Theory Of Diffraction ◽  
W Band ◽  
Chamber Size

In this paper, we describe the design of an electrically large anechoic chamber for usage on millimetre-wave bands. Ansys Savant sotware was used to perform a simulation of the chamber, using physical optics coupled with uniform theory of diffraction (PO/UTD). Moreover, a method based on an open waveguide probe is described in this paper to obtain the electrical properties of the RF absorbers at millimetre-wave frequencies. Two different source antennas were simulated in this work and the corresponding quiet zones predicted. The largest quiet zone was 30 m m × 30 m m × 50 m m , for a chamber size of 1.2 m m × 0.6 m m × 0.6 m .

Physical optics modelling of millimetre-wave personnel scanners

2006 ◽  
Vol 27 (15) ◽  
pp. 1852-1862 ◽  
Author(s):  
Beatriz Grafulla-González ◽  
Katia Lebart ◽  
Andrew R. Harvey
Keyword(s):  
Physical Optics ◽  
Millimetre Wave

Millimetre-wave and infrared spectroscopy of Br13 CN: anharmonic force field of cyanogen bromide from spectroscopic data and ab initio calculations

1997 ◽  
Vol 90 (3) ◽  
pp. 495-497
Author(s):  
CLAUDIO ESPOSTI ◽  
FILIPPO TAMASSIA ◽  
CRISTINA PUZZARINI ◽  
RICCARDO TARRONI ◽  
ZDENEK ZELINGER
Keyword(s):  
Infrared Spectroscopy ◽  
Force Field ◽  
Ab Initio Calculations ◽  
Ab Initio ◽  
Spectroscopic Data ◽  
Cyanogen Bromide ◽  
Millimetre Wave ◽  
Anharmonic Force

Millimetre-wave spectrum of the Ar-CO complex: the K = 2 ← 1 and 3 ← 2 subbands

1997 ◽  
Vol 92 (2) ◽  
pp. 229-236 ◽  
Author(s):  
M. HEPP ◽  
R. GENDRIESCH ◽  
I. PAK ◽  
Y.A. KURITSYN ◽  
F. LEWEN ◽  
...  
Keyword(s):  
Wave Spectrum ◽  
Millimetre Wave

Transitions in open millimetre-wave waveguides

1989 ◽  
Vol 136 (6) ◽  
pp. 487
Author(s):  
S.T. Peng ◽  
S.J. Xu ◽  
F.K. Schwering
Keyword(s):  
Millimetre Wave

Techniques for assessing the performance of circuit materials at microwave and millimetre-wave frequencies

2003 ◽  
Vol 783 ◽  
Author(s):  
Charles E Free
Keyword(s):  
Loss Tangent ◽  
Good Accuracy ◽  
Low Cost ◽  
Resonant Cavity ◽  
New Technique ◽  
Millimetre Wave ◽  
A New Technique

This paper discusses the techniques that are available for characterising circuit materials at microwave and millimetre wave frequencies. In particular, the paper focuses on a new technique for measuring the loss tangent of substrates at mm-wave frequencies using a circular resonant cavity. The benefits of the new technique are that it is simple, low cost, capable of good accuracy and has the potential to work at high mm-wave frequencies.

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