A 61-GHz RFID Frontend with SiGe Transceiver MMIC and SIW Coupling Network

Funke, Dominic A.; Hansen, Steffen; Bredendiek, Christian; Grenter, Thorben; Bögel, Gerd vom; Harutyunyan, Armen; Fiedler, Raik; Heinig, Andreas; Pohl, Nils

doi:10.23919/eumc48046.2021.9338212

Cited by 3 publications

(1 citation statement)

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“…However, microstrip line-based components on printed circuit boards (PCBs) have a high insertion loss. The substrate integrated waveguide (SIW) [6] is a low-cost, low insertion loss, and easy to integrate equivalent of the standard waveguide and thus a good solution to couple MMIC and antenna in millimeter-wave radar [7], [8] or for reference distribution and board interconnection [9] in multiple input multiple output (MIMO) radar.…”

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confidence: 99%

A SiGe-Chip-Based D-Band FMCW-Radar Sensor With 53-GHz Tuning Range for High Resolution Measurements in Industrial Applications

Hansen

Bredendiek

Briese

et al. 2022

IEEE Trans. Microwave Theory Techn.

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The article presents a monostatic D-band frequency-modulated continuous-wave (FMCW) radar based on a fully integrated monostatic single-channel silicon-germanium (SiGe) transceiver (TRX) chip. The chip is fabricated in Infineon's bipolar-complementary metal-oxide-semiconductor (BiCMOS) production technology B11HFC which offers heterojunction bipolar transistors (HBTs) with an f T / f max of 250 GHz/370 GHz. The monolithic microwave integrated circuits (MMICs) output signal is coupled by a fully differential substrate integrated waveguide (SIW) based coupling network. The output power at the WR-6.5 antenna flange is more than −10 dBm over a bandwidth of 37.5 GHz. For a sweep within a single-loop phase-locked loop (PLL) circuit from 174.5 to 121.5 GHz, a spatial resolution of almost 3 mm with a metallic plate as the target is achieved. The radar provides a small form factor of 2 × 4 × 5 cm 3 and low power consumption of 2.2 W at 5 V. Finally, the capabilities of the sensor for non-destructive testing (NDT) are demonstrated using a millimeter scanner. With radar imaging, it was possible to measure the orientation of the fiber layers up to a depth of 7.03 mm.

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confidence: 99%