Reduction of Inductive Crosstalk Using Quadrupole Inductors

Author

Poon, Andrew ; Chang, Andrew ; Samavati, Hirad ; Wong, S. Simon

Author_Institution

Dept. of Electr. Eng., Stanford Univ., Stanford, CA

Volume

44

Issue

6

fYear

2009

fDate

6/1/2009 12:00:00 AM

Firstpage

1756

Lastpage

1764

Abstract

Interference due to inductor crosstalk is a growing concern in modern RFICs where inductors are placed in close proximity. A quadrupole inductor is explored as a method to reduce inductive crosstalk. A quadrupole inductor and standard inductor are compared with respect to inductance, quality factor, and area. Then, physics-based calculations are corroborated with simulation and measurement to predict crosstalk reduction as a function of position. Measurements verify up to a 31 dB reduction in crosstalk. Finally, phase noise measurements of voltage-controlled oscillators show that the quadrupole inductor can be used in circuits without negatively impacting performance.

Keywords

CMOS integrated circuits; crosstalk; inductors; phase measurement; radiofrequency integrated circuits; voltage-controlled oscillators; RF CMOS IC; inductive crosstalk reduction; phase noise measurements; physics-based calculations; quadrupole inductors; quality factor; voltage-controlled oscillators; Circuit simulation; Crosstalk; Inductance; Inductors; Interference; Phase noise; Position measurement; Predictive models; Q factor; Radiofrequency integrated circuits; Crosstalk; inductance measurement; inductors; voltage-controlled oscillators;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/JSSC.2009.2020525

Filename

4982861