A 28 GHz SiGe QVCO and divider for an 81-86 GHz E-band beam steering transmitter PLL
Author
Summary, in English
This paper presents a QVCO and divider for a 28 GHz SiGe PLL. It was designed in a SiGe process with fT= 200 GHz. The PLL is intended to be used for beam steering in an 81-86 GHz E-band transmitter. Phase control is implemented by programmable current injection into the loop filter. The simulations in Spectre use a layout extracted view with parasitics for the QVCO and the frequency divider and an ADS Momentum model for the QVCO inductors. The divider is implemented with four cascaded current-mode-logic (CML) blocks, for a reference frequency of 1.75 GHz. The low frequency parts of the PLL were represented with either Verilog-A or schematic models. The phase noise of the QVCO equals -105 dBc/Hz at 1MHz offset, while at the same offset the divider standalone has an input referred phase noise of -110 dBc/Hz. The phase control has been verified by transient simulations showing a phase control sensitivity of 1.5°/μA over a range exceeding 360°. With a supply of 1.5 V the QVCO and divider consumes 29 mA.
Department/s
Publishing year
2015-01-08
Language
English
Publication/Series
NORCHIP : 32nd NORCHIP Conference, 27-28 October 2014, Tampere, Finland
Document type
Conference paper
Publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
Topic
- Electrical Engineering, Electronic Engineering, Information Engineering
Conference name
32nd NORCHIP Conference, 2014
Conference date
2014-10-27 - 2014-10-28
Conference place
Tampere, Finland
Status
Published
Research group
- Analog RF
- Elektronikkonstruktion
ISBN/ISSN/Other
- ISBN: 978-1-4799-5442-1