J. M. Zamanillo

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This paper shows the results of research on the optical control of a GaAs chip monolithic amplifier, and is an extension of previous work by our group in the field of optical-microwave interaction [1-3]. The amplifier was originally designed for the transmitter stage of an indoor mobile communications system in the 2.4 GHz band. The possibilities of optical(More)
A modular neural network architecture for accurate small/large signal microwave MESFET/HEMT modeling is presented. This is achieved by means of an original neural architecture having two main modules. A network captures the nonlinear dynamic Pulsed I/V characteristic of the device, which is mainly responsible of the large signal behavior, while the second(More)
Verilog-A Hardware Description Language (VHDL) is a behavioral description language for analog systems. It is derived from the IEEE 1364 Verilog HDL specification and it is intended to let designers of analog and integrated circuits to create and use modules described mathematically in terms of its terminals and external parameters applied to the module.(More)
In this paper, different topologies for linear and nonlinear SiGe HBT modelling are presented. The parameters are extracted from DC and S-parameters measurements. Good fitting is obtained in DC and scattering curves up to 50 GHz for different devices. A preliminary linear amplifier at 38 GHz, using SiGe HBT technology from Daimler-Benz research centre (Ulm,(More)
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