A Single-Chip 53 GHz Radiometer Front-End MMIC for Geostationary Atmospheric Measurements
Paper i proceeding, 2008

A multi-functional single-chip 53 GHz radiometer front-end MMIC has been designed in a commercial GaAs mHEMT technology and evaluated by probed measurements. To the best of the authors' knowledge, this is the first multi-functional MMIC ever presented intended for a radiometer application. Thus, the presented MMIC represents the future in radiometer front-end design, enabling a new generation of radiometers with lower cost, weight and DC power consumption. The MMIC is intended to be used in a demonstrator for a future geostationary synthetic thinned aperture radiometer for satellite-based environmental studies of the earth. Measured results for conversion gain, RF and IF bandwidths, image rejection ratio, 1-dB compression point, input referred third order intercept point (IIP3), LO saturation, and noise figure are presented and discussed. A study of the influence of benzocyclobutene (BCB) as a dielectric coating used for surface passivation on the measured RF performance is also performed. Furthermore, the very important issue of phase stability versus temperature and time was also investigated.


Sten Gunnarsson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

Herbert Zirath

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

Rumen Kozhuharov

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

Camilla Kärnfelt

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

Johan Embretsén

Christina Tegnander

2008 IEEE Radio and Wireless Symposium, RWS; Orlando, FL; United States; 22 January 2008 through 24 January 2008

867-870 4463630


Annan elektroteknik och elektronik





Mer information