The AM897-943D1058 from Anatech is a Ceramic Duplexer with Band 1 from 880 to 915 MHz and Band 2 from 925 to 961 MHz. The Duplexer has an insertion loss of less than 3.8 dB and an isolation of over 50 dB. It can handle up to 3 watts of power and is available in a surface mount package that measures 42.9 x 22 x 9 mm.