portrayal of the rf & microwaves research laboratory at ... · pdf fileportrayal of the....
TRANSCRIPT
Page 1RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Fachgebiet Hochfrequenz- und Mikrowellentechnik www.tu-ilmenau.de/hmt
Portrayal of theRF & Microwaves Research Laboratoryat Ilmenau University of Technology
Matthias A. Hein
H. Bayer, K. Blau, C. Hartmann, S. Humbla, A. Krauß, N. Murtaza, M. Schühler, U. Schwarz, E. Serebryakova, R.
Stephan, J. Trabert, G. Vogt, C. Volmer, F. Wollenschläger
G. Hippel, M. Huhn, M. Zocher
Page 2RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
• The University
• Department and Institute
• HMT Research Laboratory
• Infrastructure
• Ongoing research activities
• Useful information
Content of the presentation
More details available at:www.tu-ilmenau.de/hmt
www.wip-thueringen.de/actor/profile/ttk/read/100/
Page 3RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Region of IlmenauHalf-way Frankfurt-Dresden, Berlin-Munich40 km south of ErfurtIlmenau
27,000 population
(plus 6,400 students)
Ilmenau University of Technology
Ilmenau University of Technologywww.tu-ilmenau.de
Page 4RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
24.06.1894 Contract signed for the foundation of the Thüringisches Technikum Ilmenau
1926 Thüringisches Technikum renamed as Engineering School
1950 The Engineering School acquires the title of Training College for Electrical and Mechanical Enginering (until 1955)
16.09.1953 HfE, THE Hochschule für Elektrotechnik, is opened. Matriculation ceremony for 268 students.
14.10.1963 The GDR Minister‘s Council confers status of Technische Hochschule (TH) on the HfE
08.07.1992 The Thüringen Universities Act is passed in the Thüringen Parliament and the TH becomes Ilmenau University of Technology
116 years of tradition in engineering sciences
Ilmenau University of Technologywww.tu-ilmenau.de
Page 5RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Curie Building
The campus
Röntgen Building
Kirchhoff Building
Helmholtz Building
Newton Building
Ernst-Abbe-CentreFeynman Building
Leibniz Building
Faraday Building
Refectory
Ilmenau University of Technologywww.tu-ilmenau.de
Page 6RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Structure of the University
TU Ilmenau International SchoolCentral facilities• Research centres for Micro- and Nanotechnologies and for Energy• Computer Centre• Library• Patents Information Centre and Online Services (PATON)• Sports Centre
Departments• Electrical Engineering and Information Technology• Computer Science and Automation• Mechanical Engineering• Mathematics and Natural Sciences• Economic Sciences • Inter-departmental institutes (interdisciplinary research)
Ilmenau University of Technologywww.tu-ilmenau.de
Page 7RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Numbers and factsPeople• 6,400 Students, about 600 from abroad• 1400 Freshers• 100 Professors• 330 Academic staff plus 540 other staff
Academic Education• 23 Study
courses
(Bachelor
and Master)
• 3 International Master courses (partly under development)
Scientific Research• ~ 29 MEUR research grants in 2009, 290 kEUR / Prof• Five International Graduate Schools• Numerous Partners throughout the World
Ilmenau University of Technologywww.tu-ilmenau.de
Page 8RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Study courses• Applied Media Science (BSc)• Automotive Engineering (BSc/MSc)• Biomedical Engineering (BSc/MSc)• Business Administration (MSc)• Business/Industrial Mathematics (MSc) • Communications and Signal Processing (MSc)• Computer Science (BSc/MSc)• Computer Engineering (BSc/MSc)• Electrical Engineering and InformationTechnology (BSc/MSc)• Electrical Power and Control Engineering (MSc)• Information Systems (BSc/MSc)• Industrial Engineering and Management (BSc/MSc) • Materials Science (BSc/MSc)• Mathematics (BSc)• Mechanical Engineering (BSc/MSc)• Mechatronics (BSc/MSc)• Media and Communications Research (at MA/MSc level)• Media Technology (BSc/MSc)• Media Economics (BSc/MSc)• Micro- and Nanotechnology (MSc)• Optronics (BSc/MSc)• Research in Computer and Systems Engineering (MSc)• Technical Physics (BSc/MSc)
Ilmenau University of Technologywww.tu-ilmenau.de
Page 9RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Research clusters
Ilmenau University of Technologywww.tu-ilmenau.de
• Nano-engineering• Precision engineering and precision metrology• Technical and biomedical prosthetic systems• Drive technology, energy and environmental engineering• Digital media technology• Mobile communications
Page 10RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Content of the presentation
More details available at:www.tu-ilmenau.de/hmt
www.wip-thueringen.de/actor/profile/ttk/read/100/
• The University
• Department and Institute
• HMT Research Laboratory
• Infrastructure
• Ongoing research activities
• Useful information
Institute for Information Technologywww.tu-ilmenau.de/init
Page 11RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Institute for Information Technologywww.tu-ilmenau.de/init
Electrical Engineering & Information TechnologyOrganisation• Department: original and inter-departmental institutes
• Electrical energy and control engineering (6)• Information technology (8)• Media technology (5)• Micro- and nano-electronics (5)• Material technologies – jointly with Mechanical Engineering (3)
• Institutes: host individual research laboratories (chairs)
InIT Research Laboratories• Communications, Martin Haardt• Communication networks, Jochen Seitz• Digital broadcasting, Albert Heuberger• Digital signal processing, Karl Schran (k)• Electromagnetic fields, Hannes Töpfer• Electronic measurements, Reiner Thomä• RF & Microwaves, Matthias Hein
Page 12RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Competences and research fields of InIT
Centre and Institute for Micro- and Nano-Technologieshttp://www.tu-ilmenau.de/imn-start/
Competences Research fieldsNetworks Digital broadcastingProtocols Communications and networksSignals Digital signal and image processingChannel Electronic MeasurementsAntennas RF & MicrowavesCircuit and design technologies Electromagnetic fields
Span from fundamentals to applications
Topical and methodological networking
Major responsibilities for research cluster „mobile communications“
Interfaces to micro- and nano-technologies
Institute for Information Technologywww.tu-ilmenau.de/init
Page 13RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Survey of Courses at InIT
• Master of Science in Communications and Signal Processing• Entirely tought in English• Well-structured two year-programme• Kick-off winter term 2009
Master programme MSc-CSP
German Engineering Faculty at Moscow Power Engineering Institute
Fruitful co-operation with other Universities, e.g., Electrotechnical University St. PetersburgInternational seminar series, industrial practice, ...
• Joint project: Electrical Engineering, Computer Science, Mechatronics• Double Master degrees• Teaching in German; partial studies in Ilmenau (incl. Master`s thesis)• Established co-operation since > 10 years• Kick-off September 2007
Page 14RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Content of the presentation
More details available at:www.tu-ilmenau.de/hmt
www.wip-thueringen.de/actor/profile/ttk/read/100/
• The University
• Department and Institute
• HMT Research Laboratory
• Infrastructure
• Ongoing research activities
• Useful information
Page 15RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Research and Education 1/2
The RF & Microwave Research Laboratory …• … covers research and education in the propagation, interactions and
technical applications of electromagnetic waves, circuits, signals, and systems at frequencies between 100 kHz and 100 GHz
Research areas• Mobile and satellite communications, wireless
sensors, material issues • Antenna engineering• Circuit design and technologies• RF-MEMS • RF & Microwave measurements
STS-114 Crew, NASA
Page 16RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Research and Education 2/2We aim to provide ...• ... broad basic knowledge• ... interdisciplinarity• ... topical specialisation
• ... foundation (for scholars)• ... motivation (for students)• ... profession (for alumni)
Elec
tric
alEn
gine
erin
g
• ... public and private funding Com
pute
r Sci
ence
Mec
hatr
onic
sEc
onom
ics
Mat
hs, P
hysi
cs, l
ife s
cien
ces
University
School
Industry
We aim to raise ...
• ... social, environmental, and safety issues
We aim to address ...
Page 17RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt Who are
Head ofResearch Lab
Staff
PhD students
Seniorresearchers,
visiting scientists, postdocs
Page 18RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
HMT group: strategic position
www.tu-ilmenau.de/init
Institute for Information Technology
• Analogue and mixed-signal RF & microwave hardware aspects
• Mobile communications, radar, sensing, metrology
• Joint research strategy (roadmap, clustering)
Institute for Micro- and Nano-
Technologies
• Provides technological infrastructure• Links materials with RF functionality
and system aspects• Stimulates interdisciplinary co-
operationElectronic Technology, Nanotechnology,
Micromechanical Systems
www.tu-ilmenau.de/imn
Page 19RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Content of the presentation
More details available at:www.tu-ilmenau.de/hmt
www.wip-thueringen.de/actor/profile/ttk/read/100/
• The University
• Department and Institute
• HMT Research Laboratory
• Infrastructure
• Ongoing research activities
• Useful information
Page 20RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Dr. Stephan Karmann [email protected]
+49 3677 69 3400
Centre of Micro- & Nano-TechnologiesMission• Novel materials micro- and nano-devices circuits and systems• Interdisciplinary co-operative research projects• Basic and applied research for upcoming industrial technologiesFacility• 680 m2 clean rooms (Class 100 to
10000)• 1100 m2 laboratories and offices
www.tuwww.tu--ilmenau.de/zmnilmenau.de/zmn--startstart//
Technologies and materials• Deposition, patterning, multilayer, analytics• Epitaxy, micromachining• Optical and electron beam lithography• Si (+ oxides, nitrides)• Metals (+ oxides, carbides, nitrides) • Polymers, printed circuit boards, low-temperature co-fired ceramics
Page 21RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
• Main frequency range 1...15 GHz• Extension 15…77 GHz• Quiet zone
1.5 m × 1.5 m• Measurement distance 4.5 m• Two high-precision positioners
Antenna measurement laboratory
Mobile communications laboratory• Investigation of mobile radio channel• Configurable baseband signals• Modulated signal sources, detectors, multi-
channel simulator, de/modulators• Vector network & spectrum analysis• RUSK vector channel sounder
Institute for Information Technologies
Institute for Information Technologywww.tu-ilmenau.de/init
Page 22RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Millimeter wave antenna measurements
• Frequency range 0.8 … 77 GHz• Dynamic range 35 … 80 dB• Measurement range 4.5 m• Max. antenna weight 10 kg
• Angular resolution 0.3°• Shielding 80 … 100 dB• Reflectivity 30 … 50 dB
Page 23RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
• Located at industrial area „Am Vogelherd“
• 50 m height• Terrestrial broadcasting tests• Test platform for land-mobile satellite
communication terminals• Satellite payload on the tower• Motion simulator & real-time
channel simulator emulates moving vehicle on earth
• Use within the Project MoSaKa (Mobile Satellite Communcations in Ka Band)
Antenna tower
Infrastructure
Page 24RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
RF & microwave measurement equipment (HMT)• Frequency domain measurements
• Coaxial, four-port, nonlinear, pulsed network analysis (up to 70 GHz)
• Waveguide network analysis (up to 110 GHz)
• Spectrum analysis (up to 50 GHz)• Time domain measurements
• Time-domain reflectometry• 70 GHz sampling oscilloscope• 11 GHz real-time oscilloscope
• Wafer probers• Ambient• Vacuum, cooling stage
• RF-MEMS measurement facilities• High-precision bias controllers• Contact-less optical profilometer
Page 25RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Circuits, electromagnetic fields, and electromechanical transduction
RF & Microwave Simulation Tools
• Two- and three-dimensional microwave design and em fields• ADS, Ensemble, IE3D• HFSS, CST Microwave Studio, EMPIRE
• RF circuit design• MicroSim (PSpice), Serenade• Modular design of complex
structures (in-house)• RF-MEMS
• ANSYS
Page 26RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Content of the presentation
More details available at:www.tu-ilmenau.de/hmt
www.wip-thueringen.de/actor/profile/ttk/read/100/
• The University
• Department and Institute
• HMT Research Laboratory
• Infrastructure
• Ongoing research activities
• Useful information
Page 27RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Overview ofResearchProjects
Overview ofResearchProjects
Technology and materials
Conc
epts
& Co
mpo
nent
s
System aspects
High data rate WLANEASY-A
Ultra-wideband sensingSPP1202
Planar periodic structuresFhG-IIS
LTCC multilayer modules
KERAMIS II
High-efficiency Power amplifier
Class-S
Reconfigurable RF systems
GRK1487
SOTM tracking antennasMoSaKa
Page 28RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
• MoSaKa: Tracking antennas and outdoor-unit for mobile satellite communications BMWi/DLR, 2009-2012
• Mobicom: Self-organised mobile communication systems for disaster scenarios Reconfigurable radio interfacesDFG-GRK 1487, Computer Sciences and Electrical Engineering, 2009-2015
• ultraMEDIS-II: UWB-Radar for biomedical sensorsDFG-SPP1202, EMT & medical partners, 2007-2010
• KERAMIS-II : On-orbit verification, LTCC microwave multilayer modules, Industry partners, BMWi/DLR, 2006-2011
• AIRFUN: Development and implementation of robust 60 GHz radio systems, Industrial EASY-A consortium, BMBF/DLR, 2008-2011
• HMoS: Switched microwave amplifier and reconstruction filter, Industrial Class-S consortium, BMBF/DLR, 2007-2010
• MAPS: Radiation properties and applications of periodic structures, Fraunhofer-IIS, 2007-2010
List of actual research projects
LTCC
Page 29RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Objectives• Address challenges related to loss of terrestrial infrastructure
(disaster scenarii)• Establish communications between fixed, nomadic, and mobile nodes
in a heterogeneous network• Compact tracking antennas enabling reliable data transmission
MoSaKa – ProjectMobile satellite communications in Ka-band
Rationale• Improved transmission links (forward and return links), robust satellite
access in mobile channel• Tracking with small-aperture antennas and technologies for compact
user terminals• Installation of a specific testbed (antenna mast and precise positioner)
Prof. Dr. Albert [email protected]
+49 3677 69 4280
Page 30RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
MoSaKa – Details 1/2VSAT Ka-band antenna• High-gain antenna: > 40 dBi gain,
40-60 cm parabolic dual reflector antenna• Low-profile antenna: small aperture, lower gain• Signal acquisition and tracking
Ka-band transceiver frontend• Modular construction• Low-noise down-converter• Suitable connection to antenna
Page 31RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
MoSaKa – Details 2/2Demonstration & evaluation of developed components•Ka-band satellite internet access for reference measurements•Testbed with channel & motion simulation•Free-space testing of directional antennas•Land-mobile satellite applications•Extraction of channel parameters
Page 32RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Self-organised mobile communication systems for disaster scenarios
Prof. Dr. Andreas [email protected]
+49 3677 69 2819
Self-organised Service Recovery
Reconfigurable Radio Interfaces
Cognitive Management of Transport Resources
Decentralised Information Management
Page 33RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Reconfigurable radio interfaces – project Self-organised mobile communication systems for disaster scenarios(International Graduate School, DFG-GRK1487)Objectives• Self-organisation supported by
reconfigurable RF hardware• Selectivity, adaptivity and energy efficiency
for fast disaster recovery• Co-operation of 8 research labs in electrical
engineering and computer sciences
Rationale• Recovery from disaster scenario by identifying and exploiting available
resources• Reconfigurable antenna for RX sensing and RX/TX transmission with
spatial and frequency selectivity (cognitive radio)• Combination of analog hardware and software adaptivity for self-
organised optimisation
Schlottwitz 2002, http://de.wikipedia.org/
Page 34RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Reconfigurable antenna – Initial detailsChallenges of antenna design• Antenna for sensing (receive only):
• Wideband frequency operation• Capable to sense the entire solid angle
• Antenna for regular operation (RX and TX):• Single frequency, prescribed channel
bandwidth • Directive (multipath, link budget)
• Reconfigurable antenna design• Wideband broad pattern antenna
tunable to a single frequency directive beam
• Find optimum compromise between frequency and spatial selectivity
-6.50
-3.00
0.50
4.00
90
60
30
0
-30
-60
-90
-120
-150
-180
150
120
Page 35RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Objectives• Develop ultra-wideband radar for medical applications• Interdisciplinary approach:
Engineers, physicists, medical doctors• Cluster networking within priority programme• Envisage UWB for human medical in-vivo diagnosis:
MRI navigator and breast tumour detection
ultraMEDIS – ProjectUltra-wideband medical sensor systemsDFG priority programme UKoLoS (SPP 1202)
ultraMEDISultraMEDIS
www.ecureme.com
Rationale• Intrinsically safe and bio-compatible• Detection / localisation / imaging of dielectric contrast /
malignant tissue• Tracking of organ movement• Long-term investigations of diseases
Page 36RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
ultraMEDIS – Details 1/2UWB antennas• Compact antennas with stable
radiation pattern• Optimised and measured for dielectric
medium• Modified for use in combination with
magnetic resonance imaging• Adapted to clinical diagnostic studies
ultraMEDISultraMEDIS
Page 37RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
ultraMEDIS – Details 2/2UWB-MRI compatibility• Minimisation of current-loops for eddy
currents• Sustaining good matching and radiation
properties over the entire band of operational frequencies (impulse response)
ultraMEDISultraMEDIS
UWB-MRI functionality• Monitoring of heart beat and breath
frequencies with high precision• UWB navigation of 3-T MRI• Extraction of anatomic effects (myocardial
dynamics, brain imaging, etc.)
U. Schwarz et al., IEEE MTT-S 2009. U. Schwarz et al./ M. Helbig et al. / F. Thiel et al., ICUWB 2008.F. Thiel et al., ISMRM 2009. M. Hein et alEuCAP 2009.
Azimuth (-120…120 deg)
Freq
uenc
y (1
…10
GH
z)
Gai
n (-2
0…+1
0 dB
i)
Page 38RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
KERAMIS – ProjectCeramic microwave circuits for satellite communication systems
Objectives• Technology for Ka-band multimedia satellite applications• Ceramic multilayer technology (LTCC)• Embedded circuit elements and MMICs• Verification of technology in space (Launch 2010)
Experiment: Reconfigurable switch matrix• Reconfigurable (digitally controlled signal paths)• Compact three-dimensional hermetic packaging• Straight-forward low-cost development and fabrication• Full space qualification
http://de.wikipedia.org/wiki/Bild:Navstar-2.jpg
Page 39RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
KERAMIS – Details 1/3 Reconfigurable switch matrix• f = 17…22 GHz, |S21 | > -1dB• |Sii | < -20 dB, isolation 50 dB.• Broadband matching of switch-IC.• Trade-off performance – complexity.
transition CPW – switch die
2 4 6 8 10 12 14 16 18 20 22 24 26 280 30
-35
-30
-25
-20
-15
-10
-5
-40
0
Fre que ncy [GHz]
Mag
nit
ud
e o
f S
catt
erin
g-P
aram
eter
s [d
B]
KERAMIS 4x 4 Ka-Band Sw itch Matrix - TM1
|S12 |, |S21 |
|S22 |
|S11 |
Page 40RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
KERAMIS – Details 2/3 On-orbit verification• OOV led by industrial partners (KT, GSOC)• KERAMIS is one of eleven payload modules• Self-consistent remotely controlled experiment• Launch expected for 2010• One year of operation
www.dlr.de
Page 41RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
KERAMIS – Details 3/3 Advanced design of microwave modules• Modular design flow incorporating
previous results• Time saving (CPU and design)
Page 42RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
EASY-A consortium
Partners• IHP Microelectronics• Atmel• BMW• EADS-IW• FHG-HHI und FHG-IAF• IMST• Infineon
• MEDAV• Meytec• Siemens• TES• TU Dresden• Universität Ulm• Unteraufträge: U Bo, TU B, TU I
http://www.easy-a.de/
Working groups at Ilmenau University of Technology• Institute for Information Technology (Electronic
measurement research lab, RF & Microwave research lab)• Institute for Micro- and Nano-Technologies
Page 43RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Objectives• Increase data rate of wireless transmission
systems (e.g., WIFE, data kiosk, WPAN).• Range 1…10 m.• Unlicensed frequency band around 60 GHz.• Transceiver technology (SiGe) from project
partners.
Rationale• Patch antennas and –arrays (planar, hybrid integration)• Multilayer ceramic technology (LTCC)
• Three-dimensional, integration of transceiver chips.• Symmetric feed networks
• Advantages for millimetre wave applications.
AIRFUN – ProjectLTCC patch antennas for wireless Gbps transmission systems
http://de.wikipedia.org/wiki/Airbus_A380
Cooperation with Electronic Technology and Electronic Measurements
Page 44RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
AIRFUN – Details
• Patch elements with symmetric feed (stacked patches)
• 10-dB bandwidth
11 GHz• Gain
10 dBi (beamwidth
50...80 deg)• Can be scaled to larger arrays• Can be extended for dual
polarisation
• Design adapted to LTCC technology
• Hybrid integration of antenna with MMICs and feed networks
60 GHz patch antenna arrays
50.00 55.00 60.00 65.00 70.00-20.00
-18.00
-16.00
-14.00
-12.00
-10.00
-8.00
-6.00
-4.00
-2.00
0.00
((
))
Return loss
frequency (GHz)
11 GHz
Page 45RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
HMoS – ProjectHigh-frequency modulator for class-S amplifiers
Objectives• Industrial Class-S consortium in R&D focus mobileGaN• High-efficiency power amplifiers for mobile communications• Employ latest technology (SiGe, GaN, “digital” amplifier).
Pulse-length modulator• Switched amplifiers: arbitrary wave-forms, class-S.• Optimise architecture: noise, linearity, power consumption.• Implementation and integration: monolithic circuit design.
Reconstruction filter• Focus: low insertion loss, impedance matching, wide stop-band• Optimise quality-factor versus volume: miniaturisation.• Implementation: system demonstrator module.
Page 46RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Design and characterisation of PLM circuit
• Triangle signal generator and comparator stage• SiGe-HBT, IHP SG25H1• 1.8 GHz clock-frequency• 450 MHz input signal• On-wafer differential measurements
HMoS - Details: Pulse-length modulator
Page 47RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
HMoS - Details: Reconstruction filterReconstruction filter: Combline bandpass• Passband insertion loss as low as possible
(efficiency)• Differential matched load for push-pull switching
stage• Stop-band as wide as possible (noise shaping,
harmonic suppression)• High power handling
-30
-25
-20
-15
-10
-5
0
0.4 0.41 0.42 0.43 0.44 0.45 0.46 0.47 0.48
Frequency, GHz
Sca
tterin
g pa
ram
eter
s, d
B S11S12
-80
-70
-60
-50
-40
-30
-20
-10
0
0 1 2 3 4 5 6
Frequency, GHz
S21
, dB
-5-4.5
-4-3.5
-3-2.5
-2-1.5
-1-0.5
0
0 30 60 90 120 150 180 210 240 270 300 330
Inse
rtion
loss
, dB
Input Power, W
Page 48RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
MAPS – ProjectMicrowave antennas based on periodic structures
x
y
z
Objectives• Anisotropic dispersion of 1d and 2d periodic structures
• Including backward waves (left-handed)• Reduction of coupling• Leaky wave radiation (endfire, high gain)
• Compact antennas with specific radiation patterns• Angle and frequency dependent radiation • Reflection phase for arbitrary angles of incidence
Rationale• Anisotropic propagation of bound and radiating TE/TM modes• Simulate, characterise, and exploit the field distribution excited by
appropriate feed structures• Develop experimental techniques for optimisation
Page 49RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
MAPS – Details
Experimental studies• Measured coupling between feed antenna and high-impedance surface• Effects of truncation of the periodic structure
Unit Cell• Multi-layer structure with engineered dispersion relation• Consistent EM analysis and design procedure
Page 50RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Content of the presentation
More details available at:www.tu-ilmenau.de/hmt
www.wip-thueringen.de/actor/profile/ttk/read/100/
• The University
• Department and Institute
• HMT Research Laboratory
• Infrastructure
• Ongoing research activities
• Useful information
Page 51RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
• High-ranking and other refereed journals: 63• Inter/national conference papers: 107 / 155• Recent patent applications (2006-2010): 6
• LTCC UWB millimeter wave transmission linesDE 10-2007-028-799.4-55, PCT/EP2008/057666
• Combination of MR-imaging and UWB-radar (with PTB Berlin), 10-2008-19-862.5• MRI-compatible UWB antennas (with PTB Berlin), 10-2008-047-054.6• High-power filter for switched-mode amplifiers, 10-2008-053-013.1• Planar leaky-wave antenna, • Bandpass-pulse length modulator, 10 2010 011 468.5
• Diploma and PhD students (cumulative since 2003): 24 and 18• Research projects (cumulative since 2003) 33 with a total budget over 8 M
Useful information 1/2
Page 52RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Useful information 2/2• Research lab
www.tu-ilmenau.de• Institute for information technology
www.tu-ilmenau.de/init• Institute for Micro- and Nano-
Technologieswww.tu-ilmenau.de/mnt
• International Graduate Schoolwww.tu-ilmenau.de/gs-mobicom
• ContactProf. Matthias Hein, ext. 2832Dr. Ralf Stephan, ext. 1585Dr. Kurt Blau, ext. 1587
Page 53RF & MicrowavesResearch Laboratorywww.tu-ilmenau.de/hmt
Thank you for your attention.
Vielen Dank für Ihr Interesse.