Rony E. Amaya

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  • Rony E. Amaya
  • 2010 IEEE Radio Frequency Integrated Circuits…
  • 2010
This paper describes the design and implementation of a layout efficient bandpass filter implemented in Low-Temperature Co-fired Ceramic (LTCC) substrates. Applications for this filter include band select filters for 60 GHz System-On-Package transceivers. Two bandpass filters based on a quasi-elliptic configuration were implemented here using four(More)
This paper explores a variety of different CMOS varactor structures for RF and MMICs. A typical 0.18 μm CMOS foundry process was used as the study platform. The varactors’ capacitance-voltage characteristics and cutoff frequencies have been examined up to 55 GHz. The primary aim of this work is to design varactors that can improve(More)
An investigation of coupling between inductors and resonators fabricated in Si substrates is presented and the effects on RF systems and components is discussed. EM simulators (e.g., Agilent Momentum) provide accurate near field analysis of coupling in lossy and complex silicon substrates. Measurements verify theory and a novel experimental technique to(More)
This paper presents the design and realization of a downconversion mixer fabricated in a standard 130nm commercial CMOS process and aimed at applications in the 60 GHz ISM band. A balanced mixer configuration was implemented using a layout efficient 90° hybrid coupler which serves as a diplexer to inject the LO signal while also providing two outputs(More)
This paper discusses recent work in noise characterization of gallium nitride high electron mobility transistors (HEMTs). The excellent noise performance of gallium nitride-based HEMTs has been discussed previously in the scientific literature. In this paper, we discuss observations that show that the best minimum noise figure is found at a constant current(More)