Design of a LNA and a Gilbert Cell Mixer MMICs with a GaAsPHEMT technology

The design of a Gilbert Cell Mixer and a low noise amplifier (LNA), using GaAs PHEMT technology is presented. The compatibility is shown for co-integration of both block on the same chip, to form a high performance 1.9 GHz receiver front end. The designed LNA shows 9.23 dB gain and 2.01 dB noise figure (NF). The mixer is designed to operate at RF=1.9 GHz, LO=2.0 GHz and IF=100 MHz with a gain of 14.3 dB and single sideband noise figure (SSB NF) of 9.6 dB. The mixer presents a bandwith of 8 GHz.

Design of a LNA and a Gilbert Cell Mixer MMICs with a GaAs PHEMT technology

The design of a Gilbert Cell Mixer and a low noise amplifier (LNA), using GaAs PHEMT technology is presented. The compatibility is shown for co-integration of both block on the same chip, to form a high performance 1.9 GHz receiver front-end. The designed LNA shows 9.23 dB gain and 2.01 dB noise figure (NF). The mixer is designed to operate at RF=1.9 GHz, LO=2.0 GHz and IF=100 MHz with a gain of 14.3 dB and single sideband noise figure (SSB NF) of 9.6 dB. The mixer presents a bandwith of 8 GHz.

Reflexões e observações sobre as novas diretrizes curriculares e a sua influência na formação inicial do professor na universidade

With reference to curricular changes proposed by the CNE Resolution 1 /2002 and CNE 2/2002 on Teacher Education in Basic Education teaching degree - this study aims to analyze the new professional profile proposed in curriculum pedagogy , Physical Education , Science Biology , Mathematics , Physics and Geography . Within the curriculum guidelines was observed in a more normative articulated curriculum, focused on action-reflection- action. A guided design in practical rationality and the skills set without breaking the commitment of the public university with emancipation and quality education . Although there is this understanding we must also attend to the care that must be given to the new guidelines , based on the same reveal great concern with vocational training , with its instrumentation , with the pragmatic and utilitarian dimension of the training process . It is noteworthy that throughout the twentieth century in Brazil , where he fought for educational policies that were to solidify the construction of teacher identity , but the gains have largely remained restricted to the issue of educational reforms and a roster of disciplines , called pedagogical varnish . Therefore, this work is to deepen this thematic perspective , studying the identity of the teacher in the new curriculum design presented by undergraduate courses . Therefore , the central objective seeks to understand how the identity of teacher ( professional profile ) was presented in the proposals for teacher training , as well as the different elements that make up this identity process . Specifically if you want to ( a) identify the proposals of courses for Teachers of Primary Education , UNESP / RC - Institute of Biosciences and Geosciences and Exact Sciences - Biological Sciences , Physical Education , Physics , Geography , Mathematics and Pedagogy - the proposed profile and ( b ) analyze the fundamental knowledge that this professional listing the elements...