2.45/5.512 GHz Diplexer (2450DP15A5512E) by Digi-Key
Narda West’s Amps Band Microcell Duplexer provides highly selective receive/transmit combining
The ACMD-7409 is an environmentally green version of the ACMD-7402 duplexer and is a miniature duplexer designed for US PCS handsets.
K&L’s WSD-00420 ESMR duplexer is reaching thresholds of this technology with it’s extreme low insertion loss and tight rejection at 861.5 MHz this filter has been optimized for performance and cost
892/1850 MHz Diplexer (0892DP14A1850T)by Digi-Key.

NIC’s S Band Cavity Diplexer features low insertion loss, high isolation, and high channel selectivity. Custom designs are available up to K-band frequencies. This diplexer is designed for use in S band ground-based radars and to work in rugged/harsh environmental conditions.

Our 1905-1910/1985-1900 MHz Cavity Duplexer covering a 10 MHz Bandwidth in the PCS bands provides a low insertion loss of 1.4dB max, and isolation of 30dB min. The Duplexer is typically used in PCS base stations, sub-systems, and can be tuned to different center frequencies within the PCS band.
Multilayer Diplexer (DPX202170DT-4021A1) by Digi-Key.