7.6-8.6GHz Tunable Active MMIC Filter For Agile On-Chip X-Band Radar Receiver Front-Ends

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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Ingår i: GigaHertz 2003. Proceedings from the Seventh Symposium

Linköping Electronic Conference Proceedings 8:45, s.

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Publicerad: 2003-11-06


ISSN: 1650-3686 (tryckt), 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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