Measurement and application of vertical inductors in high‐speed broadband circuit. Issue 25 (1st December 2014)

• Record Type: Journal Article
• Authors: Belfiore, G.; Henker, R.; Ellinger, F.
• Is Part Of: Electronics letters. Volume 50:Issue 25(2014)
• Page Start: 1915
• Page End: 1917
• Publication Date: 2014-12-01
• Subjects: wideband amplifiers -- inductors -- BiCMOS analogue integrated circuits; vertical inductors -- high‐speed broadband circuit -- VI -- spiral plane -- self‐resonance frequency -- bipolar complementary metal–oxide semiconductor technology -- BiCMOS technology -- 3D planar EM simulations -- three‐dimensional planar simulations -- simulated spiral horizontal inductors -- broadband amplifier design -- bandwidth enhancement -- on‐chip inductors; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2014.3114
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : The measurement results and a practical application of vertical inductors (VIs) are presented. VIs are on‐chip inductors designed to save chip area. In VI the spiral plane is oriented perpendicularly with respect to the substrate. An inductance of 318 pH with a self‐resonance frequency of 66.5 GHz is implemented in a 130 nm bipolar complementary metal–oxide semiconductor (BiCMOS) technology and results are compared with three‐dimensional (3D) planar EM (ground–signal–ground) simulations. The inductance per unit area is 424 nH/mm 2, more than 1.7 times higher than other simulated spiral horizontal inductors. Moreover, VIs have been applied in the design of a broadband amplifier leading to a 25% bandwidth enhancement.