N. Tervo et al., "Measurement Method for Characterizing Nonlinearity Under Near-Field and Far-Field Interferers in 5G mmW Phased Arrays," 2019 49th European Microwave Conference (EuMC), Paris, France, 2019, pp. 420-423. doi: 10.23919/EuMC.2019.8910825
Measurement method for characterizing nonlinearity under near-field and far-field interferers in 5G mmW phased arrays
|Author:||Tervo, Nuutti1; Leinonen, Marko E.1; Jokinen, Markku1;|
1Faculty of Information Technology and Electrical Engineering (ITEE), University of Oulu, Finland
|Online Access:||PDF Full Text (PDF, 3.1 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2019121948903
Institute of Electrical and Electronics Engineers,
|Publish Date:|| 2019-12-19
A single antenna output of a phased array receiver has only the directivity of the single element. The array gain is achieved once the parallel branches are summed together. The far-field distance of a large array can be several meters which means that for an indoor scenario the interferer can be located in the radiating near-field. In this paper, we present a measurement method for characterizing the nonlinearity of common and parallel paths of the phased array receiver by controlling the number of active RF branches and common branch attenuation. As a measurement platform, we used a 16-chain, 64-element phased array receiver operating at 28 GHz center frequency. ACPR is used as a figure of merit of linearity of the receiver and it is measured over-the-air over the azimuth sector by using 100 MHz wide 5GNR CP-OFDM waveform.
|Pages:||420 - 423|
2019 49th European Microwave Conference (EuMC)
European Microwave Conference
|Type of Publication:||
A4 Article in conference proceedings
|Field of Science:||
213 Electronic, automation and communications engineering, electronics
This research has been supported by the Academy of Finland 6Genesis Flagship (grant no. 318927) and Infotech Oulu Doctoral Programme.
|Academy of Finland Grant Number:||
318927 (Academy of Finland Funding decision)
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