Downconverting Module Architectures for High Performance Multipixel Cameras. (15th April 2013)

• Record Type: Journal Article
• Authors: Palombini, Diego; Jankowski, Maciej; Limiti, Ernesto
• Other Names: Lee Chang-Ho Academic Editor.
• Is Part Of: International journal of microwave science and technology. Volume 2013(2013)
• Publication Date: 2013-04-15
• Subjects: Radio frequency -- Periodicals; Microwave circuits -- Periodicals; Radiofréquences; Circuits pour micro-ondes; Microwave circuits; Radio frequency; Periodicals; Electronic journals; 621.3813
• DOI: 10.1155/2013/586158
• Languages: English
• ISSNs: 1687-5826

Abstract

Abstract : Multipixel cameras represent an emerging topology for arrays receivers, improving speed and accuracy of both security scanning systems and radioastronomical sky surveys by means of a matrix of phased elements. Difficulties in the generation and proper distribution to each pixel of the local oscillator signal still limit their use to frequency ranges below a few GHz or at least seriously affect the complexity of the implementable cameras. This work presents a full comparison between two possible system architectures, alternatively based on LO frequency multiplication or subharmonic mixing strategies, aiming to overcome the aforesaid limitations: design and performance of two compact test vehicles in MMIC technology, both operating in the Q-band frequency range with ultrabroadband IF section, are reported.