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Faculté des Sciences appliquées
Faculté des Sciences appliquées
MASTER THESIS
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Master's Thesis : 24GHz homodyne radar transceiver design

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Kaschten, Vincent ULiège
Promotor(s) : Vanderbemden, Philippe ULiège
Date of defense : 25-Jun-2020/26-Jun-2020 • Permalink : http://hdl.handle.net/2268.2/9035
Details
Title : Master's Thesis : 24GHz homodyne radar transceiver design
Translated title : [fr] Réalisation d'un transceiver radar homodyne 24GHz
Author : Kaschten, Vincent ULiège
Date of defense  : 25-Jun-2020/26-Jun-2020
Advisor(s) : Vanderbemden, Philippe ULiège
Committee's member(s) : Torres, Annael 
Vanderheyden, Benoît ULiège
Redouté, Jean-Michel ULiège
Language : English
Number of pages : Entre 50 et 100 pages
Keywords : [en] radar transceiver
[en] patch antennas
[en] CW radar
[en] MIMO radar
[en] automatic door
Discipline(s) : Engineering, computing & technology > Electrical & electronics engineering
Research unit : BEA Sensors Europe
Target public : Researchers
Professionals of domain
Student
Institution(s) : Université de Liège, Liège, Belgique
Degree: Master : ingénieur civil électricien, à finalité spécialisée en "electronic systems and devices"
Faculty: Master thesis of the Faculté des Sciences appliquées

Abstract

[en] This thesis consists in the design of a new homodyne radar transceiver to be used in the context of automatic doors. The work focuses on the continuous wave mode (CW) which allows speed measurements, while the frequency modulated continuous wave (FMCW) – which allows range and speed measurements – was developed in a more theoretical way. The central component of this work is a new radar chip developed by Infineon (BGT24LTR22), working in the frequency band from 24GHz to 24.25GHz. It provides analog building blocks for radar applications and fea- tures two transmitting ports as well as two receiving ports. The first phase of this work concerns the antennas : three different types of patch antennas were designed with CST (either 4X1 or 3X1 arrays) with radiation patterns compatible with the automatic door market (elevation beamwidth of 60°). The EIRP was measured as 9.8dBm, 7.3dBm and 6.5dBm for the respective designs. The second phase deals with the transceiver’s architecture and its implementation on a printed circuit board, with Altium. Three different transceivers were designed, each one featuring one patch an- tenna type. The third phase includes the software development with Eclipse IDE, software which is meant to be embedded in an external acquisition board to sample the radar chip output signals. The processing of these signals with Matlab includes a Constant False Alarm Rate algorithm. Dif- ferent tests are performed on the transceivers in the CW mode. Signal-to-noise ratios of 21dB, 18dB and 16dB were respectively measured for each transceiver design. The detection of people in motion is validated with a speed resolution of 0.5km/h. Taking advantage of the MIMO configu- ration (two TX antennas and two RX antennas), it is possible to determine the angle of arrival of detected people. Only one TX antenna was used, because large transient responses were observed when switching between both. Nevertheless, with two RX antennas, we finally demonstrated the ability of the transceivers to separate people at different speeds with an angular precision of 30°, and to reject the parallel flow of people who do not wish the door to open.


File(s)

Document(s)

File
Access TFE Vincent Kaschten.pdf
Description: Thesis Report
Size: 32.15 MB
Format: Adobe PDF

Annexe(s)

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Access 3X1_BEA_DIM.png
Description: Antenna design 3
Size: 18.55 kB
Format: image/png
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Access 3X1_NEW_DIM.png
Description: Antenna design 2
Size: 18.48 kB
Format: image/png
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Access 4X1_INSET_DIM.png
Description: Antenna design 1
Size: 19.14 kB
Format: image/png
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Access Hardware_architecture.png
Description: Hardware architecture
Size: 69.08 kB
Format: image/png
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Access Abstract Vincent Kaschten.pdf
Description: Abstract
Size: 118.33 kB
Format: Adobe PDF
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Access CW_non_coherent_process.pdf
Description: Non-coherent processing
Size: 570.33 kB
Format: Adobe PDF
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Access CW_CFAR.pdf
Description: CFAR algorithm
Size: 415.73 kB
Format: Adobe PDF
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Access CW_final_detection.pdf
Description: Final detection
Size: 160.37 kB
Format: Adobe PDF
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Access 3X1_BEA_test2.pdf
Description: Test 2 : fixed angles of arrival
Size: 54.75 kB
Format: Adobe PDF
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Access 4X1_test3_fast.pdf
Description: Test 3 : parallel flow
Size: 48.03 kB
Format: Adobe PDF
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Access 4X1_test4_small_angles.pdf
Description: Test 4 : different speeds
Size: 54.52 kB
Format: Adobe PDF

Author

  • Kaschten, Vincent ULiège Université de Liège > Master ingé. civ. électr., à fin.

Promotor(s)

Committee's member(s)

  • Torres, Annael
  • Vanderheyden, Benoît ULiège Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Electronique et microsystèmes
    ORBi View his publications on ORBi
  • Redouté, Jean-Michel ULiège Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes microélectroniques intégrés
    ORBi View his publications on ORBi
  • Total number of views 147
  • Total number of downloads 192










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