Design of a wideband low noise amplifier for radio-astronomy applications

Details Design of a wideband low noise amplifier for radio-astronomy applications Design of a wideband low noise amplifier for radio-astronomy applications

Apr 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010jinst...5.4008h&link_type=abstract

Journal of Instrumentation, Volume 5, Issue 04, pp. 4008 (2010).

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In this work, we discuss the design of two low noise amplifiers (LNA) based on 1μm gate-length pHEMT InP transistors using two topologies. Designed for radio-astronomy applications, the first is a cascode circuit with a maximum gain of 15dB and noise figure of 0.6dB, while the second is a 2-stage cascaded amplifier with 27 dB gain and 0.63dB noise figure. The two amplifiers exhibit an input 1-dB compression point of -22dBm and -26dBm respectively, and a third order input intercept point of -10dBm and -5dBm, respectively.

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