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An active quasi-circulator (QC) with high bandwidth is proposed for monostatic FMCW automotive 77-GHz radar sensors. The QC is build around a commonly used differential LNA. As the layout of the QC is symmetrical in contrast to traditionally active QCs, the system is robust and offers a high bandwidth in respect with transmit (TX) to receive (RX) signal isolation. A single ended to differential conversion...
A novel 77-GHz directional folded dipole antenna integrated in an embedded wafer level ball grid array (eWLB) package is presented. For the characterization of the antenna a frequency multiplier is embedded, which scales the 4.25-GHz input signal up to 76.5 GHz and allows the use of a commercial signal source. The antenna structure is manufactured at the metallic layer, in the fan-out area of the...
A novel 77-GHz directional folded dipole antenna integrated in an embedded wafer level ball grid array (eWLB) package is presented. For the characterization of the antenna a frequency multiplier is embedded, which scales the 4.25-GHz input signal up to 76.5 GHz and allows the use of a commercial signal source. The antenna structure is manufactured at the metallic layer, in the fan-out area of the...
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