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Dual-Channel Injection-Locked Quadrature LO Generation for a 4-GHz Instantaneous Bandwidth Receiver at 21-GHz Center Frequency

This paper presents a local oscillator (LO) generation scheme for a 21-GHz center-frequency 4-GHz instantaneous bandwidth channelized receiver. A single 1.33-GHz reference source is used to simultaneously generate 20- and 22-GHz LOs with quadrature outputs. Injection locking is used instead of conve...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 2013-03, Vol.61 (3), p.1186-1199
Main Authors: Elbadry, M., Sadhu, B., Qiu, J. X., Harjani, R.
Format: Article
Language:English
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Summary:This paper presents a local oscillator (LO) generation scheme for a 21-GHz center-frequency 4-GHz instantaneous bandwidth channelized receiver. A single 1.33-GHz reference source is used to simultaneously generate 20- and 22-GHz LOs with quadrature outputs. Injection locking is used instead of conventional phase-locked loop techniques allowing low-power quadrature generation. A harmonic-rich signal, containing both even and odd harmonics of the input reference signal, is generated using a digital pulse slimmer. Two injection-locked oscillator chains are used to lock on to the 10th and 11th harmonics of the reference signal generating the 20- and 22-GHz quadrature LOs, respectively. The prototype design is implemented in IBM's 130-nm CMOS process, draws 110 mA from a 1.2-V supply, and occupies an active area of 1.8 mm 2 .
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2013.2241784