Ultra-Wideband mmW Digital Step Attenuator

被引：3

作者：

Neininger, Philipp ^{[1
]}

Thome, Fabian ^{[1
]}

John, Laurenz ^{[1
]}

Leuther, Arnulf ^{[1
]}

Chartier, Sebastien ^{[1
]}

Quay, Ruediger ^{[1
]}

机构：

[1] Fraunhofer Inst Appl Solid State Phys IAF, Freiburg, Germany

来源：

2023 18TH EUROPEAN MICROWAVE INTEGRATED CIRCUITS CONFERENCE, EUMIC | 2023年

关键词：

Distributed attenuator; high-electron mobility transistors (HEMTs); millimeter wave integrated circuits; wide attenuation range;

D O I：

10.23919/EuMIC58042.2023.10288944

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：

In this paper, we describe the design, analysis and evaluation of an ultra-wideband distributed-type digital step attenuator (DSA) covering most of the mmW frequency bands (between 40 and 220 GHz). Based on Fraunhofer IAF's 35-nm mHEMT technology, we compare various approaches to realizing the unit cell (UC) of a distributed DSA. By using a tapered-stack topology, we minimize the circuit's insertion loss and improve manufacturability. The fabricated 20-UC DSA features an attenuation depth of between 12.5 dB at 40 GHz and 23.5 dB at 220GHz with a total of 11 steps. At the same time, its return loss above 40 GHz is better than 10 dB for all states. With these figures, this is the most broadband DSA published to date.

引用

页码：225 / 228

页数：4

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