Mono-pulse Comparator Network System with hybrid rings

Bhilegaonkar, Sanjay; Dhande, A. P.

doi:10.1109/apcc.2013.6766010

Cited by 8 publications

(1 citation statement)

References 5 publications

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“…3(b): the open terminations, referred again with the symbols A, B, C, D, are aperture-coupled with the corresponding antennas. The port Σ provides the in-phase received signal, ΔAZ and ΔEL the out-of-phase ones in the azimuth and in the elevation planes, respectively, and ΔQ an auxiliary signal [22]. Such signals are processed by the transceivers, marked with the corresponding letters in Fig.…”

Section: B Master-slave Operations Of the Rf Front-endsmentioning

confidence: 99%

Fall Detection and 3-D Indoor Localization by a Custom RFID Reader Embedded in a Smart e-Health Platform

Paolini

Masotti

Antoniazzi

et al. 2019

IEEE Trans. Microwave Theory Techn.

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In this paper, we describe a customized 2.45 GHz RFID (Radio-Frequency IDentification) reader, designed to simultaneously perform 3-D tracking of multiple tagged entities (objects or people), static or dynamic, in harsh electromagnetic indoor environments. This is obtained by a bi-dimensional electronic beam-steering, implementing the monopulse radar concept simultaneously in the elevation and azimuth directions, with tags-reader distance estimation based on Received Signal Strength Indicator (RSSI) measurements. Experimental results show that the system is able to perform a tri-dimensional scanning of a monitored room with decimeter-accuracy over the three reference axes. The RF front-end is designed to be lightweight, thin and compact in such a way that it is portable and embeddable in domestic objects. For this purpose, a multi-layer solution is adopted with a two-dimensional patch antenna array aperture-coupled with the RF front-end. 3-D localization data are computed on board, by means of a seamless connection of the RF front-end with a low-power microcontroller which is able to store tags 3-D localization data over a multi-hour time frame. A useful method to remotely control the whole system is presented, using a Raspberry Pi 3B, directly connecting the reader with a flexible and extensive digital platform for Smart Homes. The presented architecture is experimentally demonstrated to perform a reliable fall detection of tagged people in indoor environments.

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Section: B Master-slave Operations Of the Rf Front-endsmentioning

confidence: 99%

Fall Detection and 3-D Indoor Localization by a Custom RFID Reader Embedded in a Smart e-Health Platform

Paolini

Masotti

Antoniazzi

et al. 2019

IEEE Trans. Microwave Theory Techn.

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Monopulse sum and difference signals with compensation for a failed feed element

Sheret

Allen

Parini

2016

IET Microwaves, Antennas & Propagation

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Monopulse antenna systems are commonly used in airborne radar as they give angular information in a single measurement. For amplitude based monopulse antenna systems, multiple overlapping beams are sent out from the antenna feed elements. These signals may then be re‐combined using a comparator network to form the sum and difference signals, which provide angular information relating to the target position. This study investigates a proposed method by which the individual feed element signals from the monopulse antenna are captured and combined in software, thus removing the need for a hardware comparator behind the feed elements. Results of a sum and difference signal created by a comparator and by this proposed method are compared. This study then verifies a method by which the individual feed element signals from the monopulse antenna are captured, combined in software and presents a novel method to compensate for a failed feed element signal, verified in both simulation and anechoic chamber measurements. It is shown that this new compensation for a single failed feed element works well for a signal in the centre of the monopulse antenna, where gain and sum patterns are shown to be conserved.

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Dual Plane Monopulse Comparator Network System using Substrate Integrated Waveguide Hybrid Coupler

Bhilegaonkar

Mane

2023

Electromagnetics

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Mono-pulse Comparator Network System with hybrid rings

Cited by 8 publications

References 5 publications

Fall Detection and 3-D Indoor Localization by a Custom RFID Reader Embedded in a Smart e-Health Platform

Fall Detection and 3-D Indoor Localization by a Custom RFID Reader Embedded in a Smart e-Health Platform

Monopulse sum and difference signals with compensation for a failed feed element

Dual Plane Monopulse Comparator Network System using Substrate Integrated Waveguide Hybrid Coupler

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