The SP10T PE 426161 switch from Peregrine Semiconductor meets the second-harmonic requirement of -80 dBm for Band XIII. It features two Super TX ports, each supporting insertion loss of 0.20 dB at 700 MHz and 0.55 dB at 2690 MHz. Eight symmetric TX ports feature insertion loss of 0.35 dB at 900 MHz, 0.45 dB at 1900 MHz, and 0.60 dB at 2690 MHz.
The SP12T PE426171 switch features 12 fully symmetrical transmit ports, it provides the flexibility to freely configure any combination of ports for any mode and band through the bi-directional, two-wire serial-bus control interface. The high-isolation switch supports four LTE bands, six UMTS bands and four GSM bands, with co-banding applied. It has a insertion loss of 0.35 dB at 900 MHz, 0.45 dB at 1900 MHz, and 0.60 dB at 2690 MHz; and isolation of 38 dB at 900 and 1900 MHz, on all paths. The PE426161/71 switches are available in a flip-chip package.
David Patterson, known for his pioneering research that led to RAID, clusters and more, is part of a team at UC Berkeley that recently made its RISC-V processor architecture an open source hardware offering. We talk with Patterson and one of his colleagues behind the effort about the opportunities they see, what new kinds of designs they hope to enable and what it means for today’s commercial processor giants such as Intel, ARM and Imagination Technologies.