Linear Technology has released the LTM9004 and LTM9005, two RF-to-digital uModule® devices for use in the receive channel in cellular base stations, including 3G and 4G base station receivers (WCDMA, TD-SCDMA, LTE, etc.) and smart antenna WiMAX base stations. The uModule receivers integrate the RF mixer/demodulator, amplifiers, passive filtering and 14-bit, 125Msps ADCs in one 22mm × 15mm package. The LTM9004 implements a direct conversion architecture with an I/Q demodulator, low-pass filter and a dual ADC. The LTM9005 implements an IF-sampling architecture with a downconverting mixer, SAW filter and a single ADC.
Fully Integrated RF-to-Digital Receivers for Base Station Applications
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.