A5053364799- Antenna Design and Analysis
- Microwave Engineering and Waveguides
- Antenna Design and Optimization
- Millimeter-Wave Propagation and Modeling
- Advanced Antenna and Metasurface Technologies
- Electromagnetic Compatibility and Measurements
- Radio Astronomy Observations and Technology
- Radio Frequency Integrated Circuit Design
- Full-Duplex Wireless Communications
- Electromagnetic Compatibility and Noise Suppression
- Advanced Photonic Communication Systems
- Microwave and Dielectric Measurement Techniques
- Advanced MIMO Systems Optimization
- Energy Harvesting in Wireless Networks
- Photonic and Optical Devices
- Advanced Power Amplifier Design
- Optical Network Technologies
- Radio Wave Propagation Studies
- Advanced Fiber Laser Technologies
- Wireless Body Area Networks
- Structural Analysis and Optimization
- Radar Systems and Signal Processing
- 3D IC and TSV technologies
- Power Line Communications and Noise
- RFID technology advancements
Eindhoven University of Technology
2016-2025
ORCID
2021
NXP (Netherlands)
2001-2009
Philips (United States)
2006
Philips (Netherlands)
2001-2004
Netherlands Institute for Radio Astronomy
2001-2002
Netherlands Organisation for Applied Scientific Research
2002
Thales (Netherlands)
2002
Université Côte d'Azur
1984
Recently, the desired very high throughput of 5G wireless networks drives millimeter-wave (mm-wave) communication into practical applications. A phased array technique is required to increase effective antenna aperture at mm-wave frequency. Integrated solutions beamforming/beam steering are extremely attractive for implementations. After a discussion on basic principles radio beam steering, we review and explore recent advanced integration techniques silicon-based electronic integrated...
A novel 2 array of microstrip antennas was developed that generates orthogonal circularly polarized waves at two frequencies simultaneously. This true shared aperture can be used as a building block in full-duplex wireless communication applications such focal-plane arrays for satellite internet (VSAT) and connectors. An alternative implementation the sequential rotation technique applied to create dual-frequency operation using only single aperture. The concept verified with experimental...
A novel wideband substrate integrated waveguide (SIW) antenna topology, consisting of coupled half-mode and quarter-mode SIW resonant cavities, is proposed for operation in the 60 GHz band. This innovative topology combines a considerable bandwidth enhancement low form factor with compatibility low-cost printed circuit board manufacturing processes, making it excellently suited next generation, high data rate wireless applications. Moreover, exploiting technology, antenna-platform isolation...
A novel high-gain dielectric resonator antenna, featuring a peak realized gain of 11.3 dBi over fractional bandwidth 16.6% around 30 GHz, is presented. The proposed antenna structure, excited by slot-coupled microstrip line, composed cylindrical and truncated plastic-based conical horn useful to enhance the gain. An annular perturbation notch in achieve better focusing RF energy along boresight direction, while reducing sidelobe levels (SSLs). presented design achieves SSLs below -10 dB for...
A novel technique is presented for sidelobe and axial ratio control of circularly-polarized phased array antennas. Although our new random sequential rotation (RSR) concept uses a regular periodic grid, it provides similar properties as randomly-spaced In this way, wideband behavior provided, without the appearance grating lobes. addition, gain maximized, since uniform amplitude distribution used. 4 GHz prototype consisting 16 aperture-coupled microstrip antennas with beamformer was...
Commonly used connection methods for measuring antennas in the mm-wave range, like connectors or probes, influence intrinsic behavior of antenna under test (AUT). It is shown that nearby structures supporting and probe connector cause strong interference on measured pattern. A new setup proposed eliminating interfering signal. This confirmed by a detailed simulation model verified with experimental results. Furthermore, radiates significantly due to discontinuity from transitions tip...
In this paper we present the design, realization, and experimental characterization of a photonic integrated true time delay circuit on CMOS-compatible Si <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> N xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> platform. The consists an optical side band filter for single modulation ring resonator broadband delay. Two methods tuning are investigated: 1) wavelength 2) thermo-optic tuning....
A complete functional 60-GHz BiCMOS single-chip millimeter-wave frequency-modulated continuous wave (FMCW) radar with on-chip integrated antennas is designed, realized, and experimentally validated. The chip configured one transmitting two receiving antennas. high antenna efficiency isolation between the achieved by using a cavity-backed monopole optimizing package environment. Surface-wave losses back radiation are reduced, gain obtained small ripples in pattern implementing special...
The international radio-astronomy community is currently making detailed plans for the development of a new radio telescope: Square Kilometre Array (SKA). This instrument will be hundred times more sensitive than telescopes in use. One approach this telescope to use phased array consisting 10/sup 6/ receiving elements with mixed RF/digital adaptive beamformer. At moment, demonstrator receive-only active phased-array system being tested at NFRA, Metre (OSMA). scale model 144 beamforming...
Circular polarization is indispensable for robust wireless communication between mobile devices that operate at mm-wave frequencies. Additionally, phased-array solutions are required to cope with the associated free space path loss. In view of size constraints antennas integrated on (Bi)CMOS chips, an array linearly polarized dipoles using a sequential rotation scheme attractive approach comply all mentioned requirements. When steering such off broadside, however, axial ratio will severely...
Design steps are outlined for maximizing the RF-to-dc power conversion efficiency (PCE) of a rectenna. It turns out that at frequency 868 MHz, high-ohmic loaded rectifier will lead to highly sensitive and efficient is demonstrated rectenna thus designed, using 50 Ω antenna lumped element matching network gives superior PCE compared with state art also lower resistive loading. By omitting directly, conjugate impedance rectifier, may be further increased size reduced as it prototype measuring...
With 5G posing different requirements to the mobile (handset) receiver than earlier generations, architecture needs be carefully reconsidered.However, an up-todate and complete overview is not yet available in literature.In this paper such a review of currently architectures provided, as well current trends.For first time, framework introduced that allows systematic classification architectures.An identification unexplored possibilities system-level trade-offs follows.A more flexible,...
A wide-scan and broadband focal-plane array (FPA) concept is introduced in this article, which provides high antenna gain effective isotropic radiated power (EIRP) with electronic beamsteering within a relatively large field of view (FoV), up to +/-20°. The uses bifocal double-reflector that optimizes the illumination region. In way, we have reduced required size feed maximized number simultaneously active elements. By using photonics beamformer, system for 20-40-GHz band can be created...
As the hydrological cycle is accelerating due to climate change, metropolitan areas around world are experiencing more intense rain storms ever frequently and suffer from floods they produce their consequences for people infrastructure. If we want improve our capability provide early warnings of heavy rainfall flooding, need increase understanding meteorological processes leading such events. High-resolution observations clouds precipitation systems crucial in this respect. Here, report on...