Improved RF Isolation Using Carbon Nanotube Fence-Wall for 3-D Integrated Circuits and Packaging

Author

Dunlin Tan ; Jong Jen Yu ; Hee, David ; Hock Siong Lim ; Baillargeat, Dominique ; Eudeline, Philippe ; Beng Kang Tay

Author_Institution

Res. & Technol. Singapore, Singapore, Singapore

Volume

25

Issue

6

fYear

2015

fDate

Jun-15

Firstpage

355

Lastpage

357

Abstract

We demonstrate a proof of concept to implement carbon nanotubes (CNT) in radio frequency (RF) integrated circuits to achieve improved electromagnetic isolation. A densely packed CNT fence-wall was designed on a typical via-fenced guard structure, to create RF isolation between two transmission lines. Both simulations and measurements have shown to further reduce forward and backward coupling by 10 dB over current techniques in the 1-10 GHz range. Such CNT isolation scheme could be implemented in densely packed three-dimensional circuits and packages.

Keywords

UHF integrated circuits; carbon nanotubes; integrated circuit design; integrated circuit packaging; microwave integrated circuits; three-dimensional integrated circuits; 3D integrated circuit packaging; backward coupling; carbon nanotube fence-wall; densely packed CNT fence-wall; electromagnetic isolation; frequency 1 GHz to 10 GHz; improved RF isolation; overcurrent technique; radiofrequency integrated circuit; reduce forward coupling; transmission line; via-fenced guard structure; Carbon nanotubes; Couplings; Metals; Microwave circuits; Radio frequency; Substrates; Backward coupling; RF circuits; RF isolation; RF nano-packaging; carbon nanotubes (CNT); forward coupling; via fencing;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2015.2425546

Filename

7108069