Broadband GaInP/GaAs HBT Regenerative Frequency Divider with Active Loads

An integrated GalnP/GaAs heterojunction bipolar transistor (HBT) regenerative frequency divider (RFD) with active loads is demonstrated at 4 GHz -26 GHz. In this work, the RFDs with resistive loads and active loads are fabricated in the same chip for comparison. From the measured results, the active-loading type obviously has wider operating frequency and lower input sensitivity. The f_max/f_min ratio of 6.5 is higher than that of general RFDs. The core power consumption is 36.7 mW at the supply voltage of 5 V. The chip size is 1.0 times 1.0 mm².