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High Performance RF Integrated
Systems on Chip

Our research deals with hardware implementation of monolithic integrated multifunctional high frequency ICs
Current Research Projects
Past Research Projects



Key enablers to address future technological trends will continue to be integrated circuits (IC) operational at higher frequencies with access to much wider bandwidth, at the same time providing a higher degree of integration and multi-functionality. This requires usage of state-of-the art IC processes, but also investigation of unique approaches in terms of packaging and technological advancements going beyond the Moore's Law. These unique approaches can be in a technological scale, introducing non-traditional integration such as RF-MEMS or photonic technologies monolithically, but also in the application domain realizing unique functions tailored towards the specific emerging application. Our research goal is to discover such unique approaches that can lead to significant performance gains in microwave/millimeter-wave systems or enable new applications.

Reconfigurable Phased-Array Antenna Hardware Using Integrated Circuit Technology

(AFRL) In this project, we investigate efficient solutions towards a prototype high-performance SiGe BiCMOS IC for dual-band phased array operation (K- & V-band). In addition, we develop reconfigurable frontend building blocks that can enable frequency tuning and/or impedance adjustment to alleviate the impact of antenna impedance variations during wide scan angle operation.


Optimum Design and Active Harmonic Load-Pull Characterization of SiGe Power Bars

(Fraunhofer) In this work, we develop approaches to acquire high output power from low-breakdown voltage devices by means of series and parallel stacking of smaller unit cells. The studies include determination of reliability depending on ballasting resistors, layout practices, and harmonic termination using MSU's active harmonic load-pull characterization setup.


Active Incoherent Millimeter-Wave Imaging

(NSF) Combining aspects of sparse array theory and spatial frequency sampling, the proposed active incoherent millimeter-wave imaging system will utilize a spatio-temporal incoherent transmitter array combined with a sparse, coherent receiver array. Towards this end, the project investigates a novel modular packaging format, where individual transceiver chips are wirelessly phase locked and the received data is wirelessly downlinked. This distributed approach enables the new imaging method to be directly scalable and easily implemented in future millimeter-wave imaging systems.

MILLIMETER-WAVE SYSTEMS

We develop highly-functinal ICs realized in silicon technologies (e.g., SiGe) for emerging applications such as multi-Gbps communications, 5G, high resolution radar, remote sensing. Critical technological aspects we address are minituarization and electronic beamforming/beamsteering. Furthermore, we investigate applications in the sub-millimeter wave frequencies (i.e. > 100 GHz) and research efficient ways to realize components that can facilitate such applications.  


HIGH EFFICIENCY/HIGH POWER AMPLIFIERS

Power amplifiers are one of the most challenging blocks in integrated systems and a PA's efficiency tpically limits the efficiency of the overall system. In addition to this, high-speed IC technologies typically come with a limited breakdown voltage; therefore, require advanced design techniques like parallel and series stacking in order achieve desired output power levels. We investigate design techniques to achieve high output power and efficiency and investigate the reliability of devices operating at their limits.


OPTOELECTRONICS AND PICs

Increasing data rates demand improved capability from optical fiber backbones for short- and long-haul transmission. This requires higher bandwidth, higher-order modulation formats and consequently higher linearity from optoelectronics. Another critical aspect is minituarization and lower-cost producion of these components.


HIGH BANDWIDTH ANALOG SYSTEMS

In this research area we investigate unique ways to implement very high bandwidth signal processing. As the instentenous bandwidth of today's systems  start to exceed 10 GHz, performing certain functions in the analog domain becomes a viable solution in terms of energy efficiency and cost effectiveness.