Walsin RF Devices Kamaya Walsin RF Devices includes Multilayer Ceramic (MLCC) bandpass, lowpass filters, and diplexers designed for a wide range of RF applications. The MLCC bandpass and lowpass filters feature low profile thickness, low insertion loss, and Low-Temperature Co-fired Ceramic (LTCC) process. These MLCC filters are available in RFBPF, RFLPF, RBBPF series. The RFDIP series diplexers are designed to operate multiple transmitters on a single RF antenna. These RFDIP multilayer ceramic diplexers feature low insertion loss and LTCC process.