Kalyan, R., Jeon, Y.-J., Lei, Y. D., Sim, C. K., Ansari Hussain, M. A., Kuyob, N. A., Raja, M. K., & Chai, K. C. T. (2023). A 29–31-GHz, 0.4-dB Amplitude Error and 1° Phase Error Beamforming IC and 20-dB Dynamic Range Power Detector for SatCom Phased Arrays. IEEE Transactions on Circuits and Systems II: Express Briefs, 70(10), 3837–3841. https://doi.org/10.1109/tcsii.2023.3289194
Abstract:
This paper proposes a 30GHz beamforming transmitter IC (BFIC-Tx) with a compact power detector (PD). The PD utilizes a trace around the output GSG pad of BFIC-Tx, thus, does not need dedicated on-chip coupler area. Such PD enables closed loop power control thus, (i) enables power efficient phased arrays that are capable of adapting radiated power depending on scan losses; (ii) keeps the radiated signal within the emission limits spatially (side lobes) and spectrally (emission mask). In addition, proposed BFIC-Tx employs a modified Gilbert cell like single stage linear-in-dB variable gain amplifier (VGA) which provides 15.5dB gain range (5bits), 0.5dB resolution & 1800 phase shift. Proposed PD has a 20dB dynamic range with only 0.3dB temperature drift across -40 to +850C. BFIC-Tx achieved state-of-art RMS gain error of <0.4dB, RMS phase error of <1.00, phase resolution of 5.60, PAE >10% at P1dB of 11.4dBm.
License type:
Publisher Copyright
Funding Info:
This research / project is supported by the The Office for Space Technology & Industry Singapore - Space Technology Development Programme
Grant Reference no. : COY-15-STDP/220014, S22-02003-STDP, 199702110H