Hittite filters target multi-band communications

Written by Janine Love March 09, 2010 Hits: 179 Favorites

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I just heard from Hittite Microwave Corporation that they’ve introduced a line of tunable filters that can be used for pre-selection in multi-band communication systems, wideband radar, and in test and measurement equipment. If these are areas that you work in, check out the specs below.

The HMC881LP5E and HMC882LP5E are tunable, seventh-order, low-pass filters (LPF) with adjustable cut-off from 2.2 GHz to 4.0 GHz, and from 4.5 GHz to 7.6 GHz, respectively. A 0 V to 14 V control signal provides very fast and continuous adjustment of passband cut-off: 5000 GHz/millisecond. The LPFs maintain stopband rejection of at least 35 dB out beyond 30 GHz.

The HMC890LP5E and HMC891LP5E are tunable, third-order, band-pass filters (BPF) with two independent voltage controls for adjustment of pass-band frequency and bandwidth. Filter center frequency is adjustable from 1.0 GHz to 2.0 GHz, and from 2.0 GHz to 3.9 GHz, respectively. Pass-bandwidth is adjustable to ±3% of filter center frequency. Like the companion low pass filters, return loss is 10 dB and the BPFs maintain stop-band rejection of at least 30 dB out to 9 GHz.

The HMC881LP5E, HMC882LP5E, HMC890LP5E and HMC891LP5E are available in a compact, RoHS compliant 5 x 5 mm QFN SMT plastic package and are specified for operation from -40 °C to +85 °C.

Samples and evaluation PC boards for all SMT packaged products are available from stock

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Written by :

Janine Love