Antenna Design Process with Examples

Transcription

1 Antenna Design Process with Examples Tchanguiz RAZBAN Tomsk December / 19

2 0 Presentation of IETR (our Lab) 1 2 Wide Band Dual-Polarized Antenna Satellite Receiver Antenna 3 Transparent Antenna 4 Reduced Size Base-Station Antenna 2 / 19

3 0 IETR: Institute of Electronics & Telecommunications of Rennes 3 / 19

4 A dispersed Lab in West- France Lannion Saint Malo Saint Brieuc Coëtquidan Rennes Nantes Angers La Roche / Yon 4 / 19

5 IETR Staff ( ) Lecturers and researchers : 120 Administrative and technical staff : 40 PhD students : 150 Post-doctoral fellows, Research Engineers : 40 Invited researchers : 80 5 / 19

6 The Technical Up to 110 GHz ANECHOÏC CHAMBER 1-18 GHz University of Rennes 1 ANECHOÏC CHAMBER 1-18 GHz Polytech Nantes NEAR-FIELD CHAMBER 0,8-6 GHz INSA of Rennes R.C.S CHAMBER 1-40 GHz INSA of Rennes ANECHOÏC CHAMBER 26,5-110 GHz University of Rennes 1 REVERBERATING CHAMBER INSA of Rennes ELECTRONIC MICROSCOPE SCANNING - IUT of Saint-Brieuc X DIFFRACTOMETER - IUT of Saint-Brieuc CLEAN ROOM University of Rennes 1 EXPERIMENTAL STATION in Monterfil 6 / 19

7 Measurement Equipment in Nantes q 1GHz-20 GHz 7 / 19

8 Realization Equipment in Nantes 8 / 19

9 1 Wide Band Dual-Polarized Antenna 9 / 19

10 Wide Band Dual Polarized Antenna Industrial Research Project Objectives: - Very wide band (300 MHz to 3 GHz) - Dual polarization (Horizontal & Vertical) - Limited dimension (40 cm *40 cm) Applications: - Receivers for transmission survey - Civil & Military 10 / 19

11 Wide Band Dual Polarized Antenna Two Dipole Antennas For double polarization Butterfly Antenna (Papillon) 11 / 19

12 Wide Band Dual Polarized Antenna Dental Log-periodic Antenna (DLP) Sinueuse Antenna (Sinueuse) 12 / 19

13 Wide Band Dual Polarized Antenna Simulation Results 13 / 19

14 Wide Band Dual Polarized Antenna Best Antenna of The state of the art Proposed Final Antenna 14 / 19

15 Wide Band Dual Polarized Antenna Final Result: MHz 15 / 19

16 Wide Band Dual Polarized Antenna Realization and Measurement 16 / 19

17 2 Satellite Receiver Antenna 17 / 19

18 Visual Impact of Satellite Antennas E T A T D E L A R T 18 / 19 18

19 State of the Art Schwaiger 1 satellite Dimensions: 55 x 62 cm Single LNB Gain: 34 db Fixed Position Antenna For one receiver Price from 40 Selfsat parabole plate 1 satellite Dimensionss: 60 à 65 cm Single Integrated LNB Double polarization Gain : 34,5 db à 12,7 GHz For one receiver Price from 200 E tu d e e t c h o i x d e l a n te n e 19 / 19 19

20 Objective Flat, Discrete, Beam Switchable Antenna Requirements : - Wide band : 10.7 to 12.7 GHz - High gain : 30 to 35 db ( >20 db) - Double polarization : Horizontal & Vertical - Low cross polarization < -20dB 20 / 19

21 Begin with a Rectangular Patch W= mm L= mm W L E tu d e e t Méthode d excitation: Câble coaxial c h o i x d e l a n te n e 21 / 19 21

22 Structure Modification L2=3.68mm Choose L1 & L2 for 50Ω Obtain a hexagon W2=4.5mm W1=13mm L1=19.32mm 0 S11 (db) Expected Result ,7 GHz 11,7 GHz 18,7 GHz Frequency 22 / 19

23 Simulation L1 E tu W1 W2 Simulation with CST program d e e t L2 c h o i x d e l a n te n e 23 / 19 23

24 Circular Slot inside modified Patch ,00 20,00 40,00 60,00 80,00 0 S11 (db) - 12 Expected Result 4,7 GHz 11,7 GHz 18,7 GHz Frequency 24 / 19

25 Simulation L E tu d e W e t c h o i x d e l a n te n e 25 / 19 25

26 Adjust the frequency band L = 17,04 mm by adding Rectangles W = 17,85 mm 26 / 19 26

27 27 / 19 Realization and Test

28 Antenna array 256 = 16x16 antennas are used to realize an array Gain: 29 dbi 28 / 19

29 Radiation Pattern Simulated et measured radiation pattern For one antenna For the array (256 antennas) 29 / 19 29

30 Phase shifter design Radiation control Phase shifter design Phase shifters using varactors In Ku band : 10,7-12,7 GHz Phase shifter using ferroelectric materials 30 / 19

31 3 Transparent Antenna 31 / 19

32 Objectives Flat & Discrete Antenna for Base Stations Industrial Project Requirements : - Wide band : 1.7 to 2.2 GHz - High gain : 17 dbi - Double polarization : Horizontal & Vertical - Low cross polarization < -20dB 32 / 19

33 Principles Multi-layer, Glace Substrate, Grid Metal 33 / 19

34 Structure Optimized by HFSS Simulator 30 cm environ 20 mm max Patch 1 27 mm max Patch 2 6 cm ma 34 / 19

35 Impedance Matching Results DCS-UMTS (1710 MHz 2170 MHz) Curve Inf o db(s(1,1)) Setup1 : Sw eep1 db(s(2,2)) Setup1 : Sw eep1 db(s(1,2)) Setup1 : Sw eep Y / Freq [GHz]

36 Radiation Results Y Curve Inf o db(gainl3y) Setup1 : Sw eep1 Freq='1.9GHz' Phi='135deg' db(gainl3y) Setup1 : Sw eep1 Freq='2GHz' Phi='135deg' db(gainl3y) Setup1 : Sw eep1 Freq='2.1GHz' Phi='135deg' db(gainl3y) Setup1 : Sw eep1 Freq='2.2GHz' Phi='135deg' db(gainl3x) Setup1 : Sw eep1 Freq='1.9GHz' Phi='135deg' db(gainl3x) Setup1 : Sw eep1 Freq='2GHz' Phi='135deg' db(gainl3x) Setup1 : Sw eep1 Freq='2.1GHz' Phi='135deg' db(gainl3x) Setup1 : Sw eep1 Freq='2.2GHz' Phi='135deg' Theta [deg] 36 / 19

37 Realization 37 / 19

38 Realization of Final Array International Patent: PCT/EP2012/ / 19 38

39 Realization of Final Array / 19

40 4 Reduced size Base station antenna 40 / 19

41 Base station antennas New antennas for 5G Our objective: Reduction of the size of each antenna For a compact MIMO 41 / 19

42 Size reduction If a dipole is burried inside a dielectric: Its length is reduced L = L 0 ε eff 42 / 19

43 43 / 19 Taking into accunt the initial substrate

44 44 / 19 Gain Enhancement

45 Realization and test 12 cm 45 / 19

46 46 / 19 Double Polarization

47 Array / 19

48 48 / 19 Thank You