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Wide swaths of bandwidth at millimeter-wave (mmWave) and Terahertz (THz)frequencies stimulate diverse applications in wireless sensing, imaging,position location, cloud computing, and much more. These emerging applicationsmotivate wireless communications hardware to operate with multi Gigahertz (GHz)bandwidth, at nominal costs, minimal size, and power consumption. Channelsounding system implementations currently used to study and measure wirelesschannels utilize numerous commercially available components from multiplemanufacturers that result in a complex and large assembly with many costly andfragile cable interconnections between the constituents and commonly achieve asystem bandwidth under one GHz. This paper presents an evaluation board (EVB)design that features a sliding correlator-based channel sounder with 2 GHznull-to-null RF bandwidth in a single monolithic integrated circuit (IC)fabricated in 65 nm CMOS technology. The EVB landscape provides necessaryperipherals for signal interfacing, amplification, buffering, and enablesintegration into both the transmitter and receiver of a channel soundingsystem, thereby reducing complexity, size, and cost through integrated design.The channel sounder IC on the EVB is the worlds first to reportgigabit-per-second baseband operation using low-cost CMOS technology, allowingthe global research community to now have an inexpensive and compact channelsounder system with nanosecond time resolution capability for the detection ofmultipath signals in a wireless channel.

A Wideband Sliding Correlator based Channel Sounder in 65 nm CMOS: An Evaluation Board Design