The MTT-S ADCOM visits R9 countries and institutions to promote MTT-S and expand our global activities. MTT-S President Nuno Borges Carvalho, MGA Committee chair Goutam Chattopadhyay, and the Region 9 coordinators, Glauco Fontgalland and José Ernesto Rayas-Sánchez, visited UNICAMP, the State University of Campinas, Eldorado Institute, and Sirius in Campinas, Brazil, following for Universidad Nacional de La Plata in Buenos Aires, Argentina, the University of Chile, and the Department of Astronomy (DAS).
A Fully Digital Polarimetric Phased Array Radar for Weather Observations
This paper reports on the development of a fully digital phased array weather radar. The “Horus” radar is a truck-based, S-band, fully digital polarimetric phased array radar. Fully digital systems hold promise for meeting some of the greatest technical challenges facing the meteorological community, such as the effective integration of dual-polarization capability with phased array beam agility. An overview of the advantages and challenges facing fully digital arrays for weather observations is provided along with potential mitigation strategies.
A W-Band SPDT Photoconductive Evanescent-Mode Waveguide Switch
This letter presents a silicon micromachined photoconductive evanescent (EVA)-mode waveguide SPDT switch. Two EVA-mode waveguides loaded with silicon posts are placed in a Y configuration with a common feeding waveguide. Without photoexcitation, the dielectric posts and EVA channel exhibit a bandpass filter response with insertion loss of 2.0 dB at 96.7 GHz.
A 19 μW Blocker-Tolerant Wake-Up Receiver With -90 dBm Energy-Enhanced Sensitivity
A 915-MHz energy-enhanced wake-up receiver (EE WuRx) is proposed for wireless energy-harvesting systems based on a modified legacy device. Using frequency-hopping two-tone modulation, the receiver converts the in-band harvesting energy (HE) from the legacy device into the data power with reduced constraint to the HE frequency.
An mm-Wave Trilayer AlN/ScAlN/AlN Higher Order Mode FBAR
This paper presents a film bulk acoustic wave resonator (FBAR) with a composite ferroelectric/piezoelectric transduction layer that is capable of selectively operating at higher-order resonant modes without compromising the electromechanical coupling factor (kt2) for applications in the millimeter wave spectrum. The resonator exhibits a fundamental mode at 9 GHz with a kt2 of 5.2% but can switch to a higher-order response at 31 GHz by reversing the polarization direction in the ScAlN layer (kt2 of 5.5%).
Toward the Integration of Fully 3-D Printed Surface-Mounted MW Ceramic Filters
This paper proposes a feasible way to perform the integration of heterogeneous electronic circuit technologies and fully 3-D printed ceramic microwave devices. Additive manufacturing capabilities are explored for the development of multifunction surface-mount compact components. Monolithic ceramic bandpass filters are designed to operate in X-Band and to assess the typical limitations of ceramic SLA processes.
Tackle Your RF-to-mmWave Design Challenges at IMS 2023
Visit Cadence booth 1035 to learn how Cadence EDA software offers a shift left in design cycles with advanced design, multiphysics analysis, and implementation workflows for III-V, silicon, IC package/module, and RF PCB product development.
MTT-S President Prof Nuno Borges Carvalho participated in the International Wireless Symposium (IWS 2023) to discuss and increase interactions among microwave enthusiasts, engineers, professors, and students.
The Last, But Not the Least
Mohaira Ahmad shares her heart-warming journey in the world of microwaves for the June IEEE Microwave Magazine WIM column. She describes her experiences growing up in Pakistan and trying to pursue an engineering career in a culture that does not value women pursuing technical roles.
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Call for Papers for the Special Issue on Microwave Quantum Engineering
