sysmocom cavity duplexers

dx1800-kt30

We offer a variety of cavity duplexers for major cellular bands. They can be used as accessories to our own base station products, as well as with third-party base station products or SDR based systems.

Cavity duplexers offer excellent performance compared to discrete duplexers built from electronic components or even SAW filters:

  • very low insertion loss (typically <= 1.0 dB), ensuring most of your intended signal actually passes through
  • very high attenuation of any frequencies outside the respective Rx and Tx bands
  • large isolation between Rx and Tx, protecting the sensitive Rx input from being overdriven with the relatively high power Tx signal.

sysmocom offers mainly two families of duplexers: Either rated up to 30W RF power for use in dry environment (-kt30 suffix) only, or with IP67 rated weather-proof enclosure for outdoor (-kt40-ip67 suffix).

sysmocom cavity duplexer models

The table below shows our standard models, most of which we typically keep in stock in low quantity. Non-stock parts require an average or 4-5 weeks of production lead time.

SKU Band Uplink MHz Downlink MHz max. RF Power IP67 Data Sheet Shop
dx850-kt30 5 824 - 849 869 - 894 30 No data sheet http://shop.sysmocom.de/products/dx850-kt30
dx850-kt40-ip67 5 824 - 849 869 - 894 40 Yes data sheet http://shop.sysmocom.de/products/dx850-kt40-ip67
dx900-kt30 8 880 - 915 925 - 960 30 No data sheet http://shop.sysmocom.de/products/dx900-kt30
dx900-kt30 8 880 - 915 925 - 960 40 Yes data sheet http://shop.sysmocom.de/products/dx900-kt40-ip67
dx1800-kt30 3 1710-1785 1805-1880 30 No data sheet http://shop.sysmocom.de/products/1800-mhz-dcs-duplexer-30w
dx1800-kt40-ip67 3 1710-1785 1805-1880 40 Yes data sheet http://shop.sysmocom.de/products/dx1800-kt40-ip67
dx1900-kt30 2 1850-1910 1930-1990 30 No data sheet http://shop.sysmocom.de/products/dx1900-kt30
dx1900-kt45-ip67 2 1850-1910 1930-1990 40 Yes data sheet http://shop.sysmocom.de/products/dx1900-kt45-ip67
dx800-kt30 20 791 - 821 832 - 862 30 No data sheet http://shop.sysmocom.de/products/dx800-kt30
dx2100-kt30 1 1920-1980 2110-2170 30 No data sheet http://shop.sysmocom.de/products/dx2100-kt30
dx2600-kt30 7 2500-2570 2620-2690 30 No data sheet http://shop.sysmocom.de/products/dx2600-kt30

custom duplexer models

We are very happy to produce cavity duplexers per our customer request. Customization includes bands / frequency, connectors / RF pwerformance parameters. Please reach out to sales@sysmocom.de with your requirements. We can produce custom duplexers in low quantities (absolute minimum 10 units), but not at MOQ-1. Thanks for your understanding.