Abstract
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 subarrays 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, overthe- air measurements are performed, showing 26dB of interference cancellation between the sub-arrays. The prototype is implemented using 45nm CMOS PDSOI.
Original language | English |
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Title of host publication | ESSCIRC 2019 - IEEE 45th European Solid State Circuits Conference |
Place of Publication | Cracow, Poland |
Publisher | IEEE |
Pages | 213-216 |
Number of pages | 4 |
ISBN (Electronic) | 978-1-7281-1550-4 |
DOIs | |
Publication status | Published - 18 Nov 2019 |
Event | 45th European Solid State Circuits Conference, ESSCIRC 2019 - Krakow, Poland Duration: 23 Sept 2019 → 26 Sept 2019 Conference number: 45 https://esscirc-essderc2019.org/ |
Conference
Conference | 45th European Solid State Circuits Conference, ESSCIRC 2019 |
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Abbreviated title | ESSCIRC 2019 |
Country/Territory | Poland |
City | Krakow |
Period | 23/09/19 → 26/09/19 |
Internet address |
Keywords
- Phased array
- Beamforming
- Phase shifter
- Complex multiplication
- Inter-beam interference cancellation