Robert Malmqvist
Swedish Defence Research Agency, Sweden
Carl Samuelsson
Swedish Defence Research Agency, Sweden
Tony Nilsson
Swedish Defence Research Agency, Sweden
Isabel Ferrer
Swedish Defence Research Agency, Sweden
Andreas Gustafsson
Swedish Defence Research Agency, Sweden
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Published in: GigaHertz 2003. Proceedings from the Seventh Symposium
Linköping Electronic Conference Proceedings 8:45, p.
Published: 2003-11-06
ISBN:
ISSN: 1650-3686 (print), 1650-3740 (online)
In this paper; we evaluate a new design of a previously presented (second order) tunable active X-band MMIC filter. By using a two-stage low noise amplifier in each filter section a higher filter gain and selectivity as well as a lower filter noise figure can be achieved at the expense of a smaller filter tuning range. The filter is tunable to eight different center frequencies between 7.6-8.6GHz. Typical measured data for all eight tuning states show a maximum gain that varies between 13-26dB; a 4-5dB noise figure and a spurious-free dynamic range of 58-67dB. The presented filter could potentially be utilized as an important building block to realize agile compact on-chip receiver front-ends for future adaptive X-band radar array antennas; for example.
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