Multi-throw plastic MMIC switches up to 6 GHz with integratedpositive control logic

摘要

SP3T, SP4T, SPGT and SP8T GaAs MMIC switches with integratedpositive control low-power decoder/driver logic are described for thefirst time. By integrating single-pole multi-throw microwave switcheswith positive voltage, low power decoder/drivers, the number of I/Ocontrol lines is significantly reduced, die area/cost is reduced and RFperformance is improved. Positive control allows direct interfacing tostandard CMOS/TTL drivers, simplifying PCB integration. These plasticpackaged terminated multi-throw switches operate in the 2.4 GHz and5.2/5.8 GHz ISM bands. Insertion losses are under 2 dB, return lossesexceed 10 dB, isolations are more than 24 dB, one dB input powercompressions range from 21-26 dBm and single tone third order interceptsexceed 35 dBm at 2 GHz. The logic operates from -40° C to +85° Cwith a 5 V supply voltage while consuming less than 30 mW of DC power.Control current requirements are under 100 uA per control line.Switching times are under 250 ns