By Skyworks Solutions, Inc.
The most important material properties for a dielectric resonator (DR) are its dielectric constant (εr), unloaded quality factor (Qu), and temperature coefficient of the resonant frequency (τf). The usual reason for choosing a DR as a resonating element is the size reduction afforded by the high (εr) of modern ceramics. But "dielectric constant" is a misnomer; not only does (εr) vary slightly for different temperature coefficient blends within the same material family, but lot-to-lot ceramic process variations cause (εr) to swing typically ±1 unit between lots.
The CDCB2X1 GPS antenna combiner is a two-input, one-output power divider designed specifically for the GPS L1 and L2 carrier frequencies. The CDCB2X1 allows you to put two antennas on one GPS receiver.