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Weave-induced skew on printed wiring boards (PWB) for 10+ Gbps SerDes data rates can be very significant. In this paper, we not only investigate weave-induced skew but also look at other sources of skew. We show the weave skew results taken from measurements of three different test boards. Results from a fourth board are presented to examine PWB differential via skew. Measurements from a fifth board...
We present the development of a coplanar waveguide (CPW) Ka-band (35 GHz) low-noise amplifier (LNA) designed in MIT-Lincoln Laboratory (MIT-LL) 180 nm fully depleted silicon-on-insulator (FDSOI) CMOS technology fabricated on a "float zone" (2000 ohm-cm) substrate. The LNA exhibits a noise figure of 6.5 dB and an associated gain of 6.7 dB at 37 GHz while consuming 27.5 mW of DC power. When...
We present the development of a low-power W-band low-noise amplifier (LNA) designed in a 200-nm InAs/AlSb high electron mobility transistor (HEMT) technology fabricated on a 50-mum GaAs substrate. A single-stage coplanar waveguide with ground (CPWG) LNA is described. The LNA exhibits a noise figure of 2.5 dB and an associated gain of 5.6 dB at 90 GHz while consuming 2.0 mW of total dc power. This...
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