Coupling-Shielded Inductor for High Isolation Between PA and LC-Based DCO
- Authors
- Yoo, S.-S.[Yoo, S.-S.]; Lee, K.-Y.[Lee, K.-Y.]; Yoo, H.-J.[ Yoo, H.-J.]
- Issue Date
- Jan-2017
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- ADPLL; BLE; coupling shield; crosstalk; DCO; magnetic coupling; VCO
- Citation
- IEEE ELECTRON DEVICE LETTERS, v.38, no.1, pp.24 - 27
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE ELECTRON DEVICE LETTERS
- Volume
- 38
- Number
- 1
- Start Page
- 24
- End Page
- 27
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/30621
- DOI
- 10.1109/LED.2016.2626319
- ISSN
- 0741-3106
- Abstract
- This letter presents a novel coupling-shielded inductor. The inductor has a magnetic coupling shield ring (CSR), designed with an Al pad metal. The CSR has an electromotive force-induced current, which flows in such a direction as to oppose the magnetic field from an aggressor. As a result, the proposed inductor can be protected from the attack of a power amplifier (PA) with a strong magnetic field. The inductor is applied in an LC-based digitally controlled oscillator (DCO) to verify the enhancement of isolation. It was fabricated by a 55-nm 1P6M CMOS process. Using the CSR, the isolation between the DCO and PA is increased by about 11 dB without degradation of the DCO performance. The DCO with CSR has a low phase noise of -114.5 dBc/Hz at 1 MHz with 0.74-mW power consumption.
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Collections - Information and Communication Engineering > School of Electronic and Electrical Engineering > 1. Journal Articles
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