Cost Effective Parallel-branch Spiral Inductor with Enhanced Quality Factor and Resonance Frequency

Author

Bae, Hyun-Cheol ; Kim, Sang-Hoon ; Lee, Ja-Yol ; Kang, Jin-Young ; Lee, Sang-Heung ; Yu, Hyun-Kyu

Author_Institution

SiGe Circuit Team, RF Circuit Group Electron. & Telecommun. Res. Inst., Daejeon

fYear

2007

Firstpage

87

Lastpage

90

Abstract

In this paper, we present a cost effective parallel-branch spiral inductor with enhanced quality factor and resonance frequency. This structure is designed to improve the quality factor, but different from other fully stacked spiral inductors. The parallel-branch effect is increased by overlapping the first metal below the second metal with same direction. Measurement result shows an increased quality factor of 12% improvement. Also, we show an octagonal parallel-branch inductor which reduces parasitic capacitances for higher frequency applications

Keywords

Q-factor; inductors; parallel-branch effect; parallel-branch spiral inductor; quality factor; resonance frequency; Costs; Metallization; Parasitic capacitance; Q factor; Resonance; Resonant frequency; Silicon germanium; Spirals; Substrates; Thin film inductors; Parallel-branch Inductor; Quality factor; Resonance frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Silicon Monolithic Integrated Circuits in RF Systems, 2007 Topical Meeting on

Conference_Location

Long Beach, CA

Print_ISBN

0-7803-9764-9

Electronic_ISBN

0-7803-9765-7

Type

conf

DOI

10.1109/SMIC.2007.322776

Filename

4117332