Here are some options that will cover the 2.4 GHz band
IQ Mod: ADL5375
IQ Demod: ADL5380 or ADL5382
PLL to drive LO Ports: ADF4351
IQ Mod with integrated PLL: ADRF6703
IQ Demod with integrated PLL: ADRF6820
Integrated Transceiver: AD9361
Here are some options that will cover the 2.4 GHz band
IQ Mod: ADL5375
IQ Demod: ADL5380 or ADL5382
PLL to drive LO Ports: ADF4351
IQ Mod with integrated PLL: ADRF6703
IQ Demod with integrated PLL: ADRF6820
Integrated Transceiver: AD9361