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Today's #TechTuesday is from our own engineer, Rafi Hershtig! 5G Spectrum Monitoring is demanding DC to 67GHz products. In response to 5G ATE Harmonics monitoring, K&L Microwave developed and shipped to prime customer it's latest version of SPCL-00808, wide band High-Pass / Low-Pass Diplexer capable to span from DC to 67GHz. The Low-Pass filter covers DC to 5.5GHz and rejects more than -50dB from 7GHz to 67GHz. The High-Pass Filter exhibits a 3dBc cutoff frequency at 8 GHz and covers up to 67GHz with -2dB loss typical, while rejecting by -50dB from DC to 5.5GHz, plot is attached below. The design exploits several technologies and was simulated by CST 3D and Sonnet software to fine tune and guarantee a mode free environment. Extra efforts were paid launching into the 1.85mm connectors providing input VSWR of 1.4:1 over the Low-Pass band and 2:1 over the High-Pass band. Overall, excellent agreement was found between simulated and measured data. With the power handling of 2W, this unit is placed before and after the DUT, such that the carriers are injected in the DC-5.5GHz and their respective harmonics are monitored in the 8-67GHz band. Connect with an Engineer at https://ow.ly/2UtL50RgCeT

  • A graphic with the SPCL_00808 filter and a design plot.

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