Measurement Method for Characterizing Nonlinearity Under Near-Field and Far-Field Interferers in 5G mmW Phased Arrays

被引：0

作者：

Tervo, Nuutti ^{[1
]}

Leinonen, Marko E. ^{[1
]}

Jokinen, Markku ^{[1
]}

Aikio, Janne ^{[1
]}

Kursu, Olli ^{[1
]}

Sonkki, Marko ^{[1
]}

Rahkonen, Timo ^{[1
]}

Parssinen, Aarno ^{[1
]}

机构：

[1] Univ Oulu, Fac Informat Technol & Elect Engn ITEE, Oulu, Finland

来源：

2019 49TH EUROPEAN MICROWAVE CONFERENCE (EUMC) | 2019年

基金：

芬兰科学院;

关键词：

ACPR; Beamforming; Intermodulation; Spatial interference; over-the-air; 3GPP;

D O I：

10.23919/eumc.2019.8910825

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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.

引用

页码：420 / 423

页数：4

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