JSSC 2019第5期RF & Wireless

A 28-GHz Flip-Chip Packaged Chireix Transmitter With On-Antenna Outphasing Activ

一款28GHz Chireix发射器，利用双馈环天线实现高效功率放大和负载调制。

53%/43% PA drain/power-added efficiency at 17.1-dBm saturated output power

28GHzChireix发射器功率放大器双馈环天线毫米波

▸利用多馈天线作为多端口无源网络实现异相主动负载调制

▸双馈环天线等效于理想差分串联非隔离功率合成器

▸天线级信号处理保持宽视场，适合阵列或MIMO应用

Abstract

This paper presents a packaged 28-GHz Chireix outphasing transmitter (TX) for power ampliﬁer (PA) efﬁciency enhancement at both peak and back-off output power (PBO). The main objective is to investigate the possibility of employing a multi-feed antenna as a multi-port passive network to perform outphasing active load modulation. As a proof of concept, an outphasing TX architecture is proposed by leveraging a dual-feed loop antenna (DLA) to achieve high efﬁciency trans- mission of wideband comple