TDK RF Couplers offer multiple types of directional couplers, including the HHM Series Multilayer Chip Directional Couplers for LTE/GSM/DCS/PCS and the TFS Series Couplers. The HHM29xxxx Series includes a variety of coupling characteristics and frequency ranges, including the HHM2909C4 that offers four frequency ranges from 777MHz to 1910MHz, coupling factor range from 12.8±1.0dB to 20.4±1.0dB, and operating temperature range from -40°C to +85°C.