A Wideband IF Receiver Module for Flexibly Scalable mmWave Beamforming Combining and Interference Cancellation

Large-scale phased arrays need to combine weighted signals from multiple sub-arrays either in analog or in digital domain. Sub-arrays are preferably implemented modularly with integrated circuits placed next to the associated antennas. In order to enable flexible and scalable combining networks of several mmWave sub-arrays, this paper presents a wideband receiver module that provides the cartesian combining of beamforming weights for one sub-array at IF. Furthermore, it allows interference cancellation between sub-arrays or combining multiple sub-arrays. It also provides filtering before ADCs to support current and foreseeable 5G channel bandwidths up to 800MHz. The receiver is operating at 2-4GHz IF frequency range and has more than 400MHz baseband bandwidth, a noise-figure of 5.5dB, -6dBm 1dB compression point and +3dBm in-band IIP3. In addition, over-the-air measurements are performed, showing 26dB of interference cancellation between the sub-arrays. The prototype is implemented using 45nm CMOS PDSOI.

Keywords

phased array, beamforming, phase shifter, complex multiplication, inter-beam interference cancellation

DOI

10.1109/ESSCIRC.2019.8902869

Citation

Akbar , R , Klumperink , E A M , Tervo , N , Javed , M Y , Stadius , K , Rahkonen , T & Pärssinen , A 2019 , A Wideband IF Receiver Module for Flexibly Scalable mmWave Beamforming Combining and Interference Cancellation . in 49th European Solid-State Device Research Conference and 45th European Solid-State Circuits Conference. September 23-26, 2019 Kraków, Poland . IEEE , pp. 213-216 , European Solid-State Device Research Conference and European Solid-State Circuits Conference , Krakow , Poland , 23/09/2019 . https://doi.org/10.1109/ESSCIRC.2019.8902869

Permanent link to this item

https://urn.fi/URN:NBN:fi:aalto-202001021394

Collections

[article-cris] Sähkötekniikan korkeakoulu / ELEC

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