To offer services in the safety-critical application, such as the advanced driving assistance system and unmanned aerial vehicle (UAV) navigation, the navigation systems require more precise and reliable receivers, which are large-size and high-cost in the traditional solution due to multi-chip RF receivers. A highly integrated quad-channel global navigation satellite system (GNSS) RF receiver is proposed in this paper, which can be configured to receive all-band GNSS signals and L-band satellite-based augmentation system (SBAS) for high-precision positioning. The single-chip quad-channel receiver can also be configured to receive L5 + L1/L2 signals for high precision double antenna orientation, which will dramatically reduce the size and cost. Measurement results show that the proposed RF receiver achieves a noise figure (NF) of 2.7–3.2 dB, an output-referred 3rd order intercept point (OIP3) of +34.7 dBm and a programmable filter bandwidth of 0.8–80 MHz, with RF frequency covering from 1.15 GHz to 1.65 GHz for all-band GNSS signals. Due to IQ mismatch compensation and layout improvement, an image rejection ration (IRR) of 58.1 dB and a channel isolation of 57 dB is achieved.
Reconfigurable Quad-Channel GNSS RF Receiver for High-Precision Positioning and Orientation
Lect. Notes Electrical Eng.
China Satellite Navigation Conference ; 2022 ; Beijing, China May 22, 2022 - May 25, 2022
China Satellite Navigation Conference (CSNC 2022) Proceedings ; Kapitel : 44 ; 473-482
2022-05-07
10 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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