RF1171B

The RF1171B is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter designed to provide front-end selectivity in 418.0 MHz receivers. Receiver designs using RF1171B include superhet with 10.7 MHz or 500 kHz IF, direct conversion and superregen. Typical applications of RF1171B are wireless remote-control and security devices operating in the United Kingdom under DTI MPT 1340 and in the USA under FCC Part 15.

This coupled-resonator filter RF1171B (CRF) uses selective null placement to provide suppression, typically greater than 40 dB, of the LO and image spurious responses of superhet receivers with 10.7 MHz IF. RFM's advanced SAW design and fabrication technology of RF1171B is utilized to achieve high performance and very low loss with simple external impedance matching (not included). Our new patent pending solder seal process utilizes a Faraday shield lid, which improves out of band rejection.