Husain, Rahat

King Fahd University of Petroleum and Minerals

REFLECTION MEASUREMENTS USING WEINSCHEL  
ENGINEERING MODEL VM-4A/HO-2/4312 SYSTEM 
Rahat Husain 
Metrology, Standards & Material ivision Research Institute s D
King Fahd University of Petroleum & Minerals Dhahran-31261, Saudi 
Arabia 
ABSTRACT  
The paper presents a setup of reflection measurements using Weinschel 
Engineering model VM-4A/HO-2/4312 system. A 4O dB directivity 
directional bridge, model 8721A(HP), is used in the system for 
reflection measurements from 10 to 110 MHz, which provides new means of 
precision measurement. High frequency measurements are performed by 
using dual directional couplers, reflectometer bridges, etc. Other 
precision measurement systems which use model 560 Scalar Network 
Analyzer (Wiltron), model 8407A Network Analyzer (HP) and model 8566A 
Spectrum Analyzer (HP) are also discussed.  
INTRODUCTION  
Measurements are at the heart of analytical design and controlled 
production. To enable today's systems we must make measurements that 
are accurate for even small standing wave ratios (SWR) and fast to 
accomplish. A tremendous advancement in the field of electrical and 
electronic measurements technology has led to the development and 
manufacture of the highest quality microwave components,  
and precise microwave measurement and calibration instruments.  
The focus of this presentation will be on reflection measurements using 
VM-4A/HO-2/4312 Attenuator and Signal Generator Calibrator System 
(Weinschel Engineering), 5600 Automated Scalar Network Analyzer System 
(Wiltron), 8407A Network Analyzer System (Hewlett Packard) and 8566A 
Spectrum Analyzer (Hewlett Packard). To measure reflected signals, a 
directional device is required to separate the reflected signal from 
the incident or test signal. The accuracy of reflection  
 
1989 NCSL WORKSHOP & SYMPOSIUM  
 
PAGE: 42 - 1  
 










REFLECTION MEASUREMENTS USING WEINSCHEL ENGINEERING MODEL VM-4A/HO-2/4312 SYSTEM

https://eprints.kfupm.edu.sa/id/eprint/136053/1/rahat_REFLECTION_MEASUREMENTS_USING_WEINSCHEL_ENGINEERING_MODEL.pdf

REFLECTION MEASUREMENTS USING WEINSCHEL ENGINEERING MODEL VM-4A/HO-2/4312 SYSTEM

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King Fahd University of Petroleum and Minerals