Mauricio Pinto

TL;DR: In this paper, an efficient radar transmitter with improved spectral confinement, enabled by a pulse waveform that contains both amplitude and frequency modulation, is presented. But the performance of the power amplifier under a Gaussian envelope is compared to that of a Class-A PA.

TL;DR: In this paper, a modeling approach for the design of microstrip ferrite circulators is presented and validated on several examples using the same commercially available ferrite disk, and several design parameters are shown to affect the frequency response; the ferrite thickness relative the microstrip substrate thickness shifts the operating frequency, while external matching networks can increase the fractional bandwidth from 10% up 40%.

TL;DR: In this article, passive components, such as lumped metal insulator-semiconductor (MIS) and ceramic capacitors, as well as coupler circuits implemented on alumina substrates, are integrated in a metal-embedded chip assembly (MECA) process together with GaN monolithic microwave-integrated circuits (MMICs) in a way that provides a common RF and thermal ground.

TL;DR: In this paper, the authors report on the RF design of planar ferrite-based RF circulators with bandwidth control through the height of the ferrite puck and the DC magnetic bias.

TL;DR: In this article, the authors describe the additional design dimension of a new heterogeneous packaging process, referred to as Metal-Embedded Chip Assembly (MECA), which can be used as an additional degree of freedom for design and manufacturing of passive circuits for integrated RF front-ends.