This low pass RF filter from TDK Corporation is centered at 2.45GHz with a 100MHz bandwidth. It features 0.48dB insertion loss in a 0603 surface mount package.
TDK DEA162500LT-1212A1 low pass RF filter with 2.45GHz center frequency, 100MHz bandwidth, and 0.42dB insertion loss in a surface mount 0603 (1608 metric) package.