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We experimentally demonstrate a real-time high-speed physical random bit generator using the time-interleaved sampling of broadband white chaos. The white chaos is generated by optical heterodyning of two external-cavity feedback laser diodes. It has a white-noise-like spectrum with a 3-dB bandwidth of 16.7 GHz and a symmetric amplitude distribution and has no time-delay signatures of the external...
Transparent broadband circularly-polarized (CP) microstrip antennas on a quartz or Lexan substrate are developed for CubeSats. Two designs for the 2.4 GHz ISM band are presented. Both designs use a wire mesh for the antenna and ground plane.
In this paper we present a 2GSps 12bit current steering digital-to-analog converter (DAC), in 100G Ft 0.18µm SiGe HBT technology. An improved switching sequence is proposed to compensate the gradient error and reduce the impact of cell-dependent-delay-variation. According to measured results, the test chip achieved a DNL/INL of 0.6/0.95 LSB respectively. The measured SFDR at low frequency is above...
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