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A 17.8-20.2 GHz Compact Vector-Sum Phase Shifter in 130 nm SiGe BiCMOS Technology for LEO Gateways Receivers
Javier Del Pino1, Sunil L Khemchandani1, Mario San-Miguel-Montesdeoca2
1Institute for Applied Microelectronics (IUMA), Universidad de Las Palmas de Gran Canaria, 35017 Las Palmas de Gran Canaria, Spain.
Abstract:
This paper presents a novel and compact vector modulator (VM) architecture implemented in 130 nm SiGe BiCMOS technology. The design is suitable for use in receive phased arrays for the gateways of major low Earth orbit (LEO) constellations that operate in the 17.8 to 20.2 GHz frequency range. The proposed architecture uses four variable gain amplifiers (VGA) that are active at any given time and are switched to generate the four quadrants. Compared to conventional architectures, this structure is more compact and produces double the output amplitude. The design offers 6-bit phase control for 360°, and the total root mean square (RMS) phase and gain errors are 2.36° and 1.46 dB, respectively. The design occupies an area of 1309.4 μm × 1783.8 μm (including pads).
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