R&D Microwaves has been demonstrating the company's new WiMAX triplexer to inject a wide range of wireless signals into indoor DAS systems. The triplexer-filter uses a novel suspended substrate for DC to 2200 MHz, 2.4 GHz, and 5 to 6 GHz bands. The company has also received a high level of interest for its new line of unique multisection/tapered coaxial high power type N couplers to 18 GHz.