Measurement of Analog Modulation Index with a Calibrated Radio Frequency Attenuator

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

The Challenges of Precision Analog Modulation Measurement

In today’s digital world, many established analog techniques are being replaced by modern digital alternatives. Digital modulation is now commonplace, particularly in mobile communications, but traditional analog amplitude and frequency modulation are still in widespread use. Laboratories performing RF calibration report that analog modulation meters and analyzers are a part of their workload t...

متن کامل

A Radio-frequency Measurement System for Metallic Object Detection Using Pulse Modulation Excitation

Guns and knives have imposed a significant threat to public safety. Based on the electromagnetic characteristics of the materials of guns and knives’, techniques concerning Electromagnetics (EM) e.g. walk-through metal detection equipment and X-ray and THz screening system have been used in an effort to detect and characterise them. Different EM frequencies for metallic object detection have de...

متن کامل

Measurement and Computational Modeling of Radio-Frequency Electromagnetic Power Density Around GSM Base Transceiver Station Antennas

Evaluating the power densities emitted by GSM1800 and GSM900 BTS antennas isconducted via two methods. Measurements are carried out in half a square meter grids around twoantennas. CST Microwave STUDIO software is employed to estimate the power densities in order fordetailed antenna and tower modeling and simulation of power density. Finally, measurements obtainedfrom computational and experime...

متن کامل

Modelling Framework for Radio Frequency Spatial Measurement

The main crux of this thesis was to produce a model that was capable of simulating the theoretical performance of different configurations for a spatial measurement system using radio frequency technology. It has been important to study new modalities of spatial measurement since spatial measurement systems are an enabling technology that have allowed for the creation of better medical procedur...

متن کامل

A New Analog-based LO Harmonic Rejection Technique with Tunable Notch Frequency

An effective technique for mixer LO harmonic rejection in a SAW-less wideband receiver front-end is proposed. The proposed technique provides a tunable notch that can be placed at any frequency like mixer LO harmonics, to avoid the aliasing in baseband after mixing. An analog LC notch is used in a cascode transconductor, and it can reject one of the 3rd or 5th harmonics. T...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Journal of Electromagnetic Engineering and Science

سال: 2021

ISSN: 2671-7255,2671-7263

DOI: 10.26866/jees.2021.21.2.87