A combiner is to combine signals of two or more channels into one channel, so as to improve the number of transmission channels and expand communication capacity. There are mainly indoor combiners and outdoor combiners.
Tens of types of combiners with varying frequency, type and performance are available and can achieve dual-band, tri-band and even twelve-band combiner function. At present, the product has been applied in mobile communications systems such as LTE, TD-SCDMA, CDMA, GSM, DCS, WCDMA (UMTS), WLAN, etc