A Low Phase Noise Differential Oscillator Employing Stub-Loaded Nested Split-Ring Resonator Inspired Balanced Bandpass Filter

Cai, Z; Tang, X; Li, Z; Zhang, T; Liu, Y; Yang, Y

A Low Phase Noise Differential Oscillator Employing Stub-Loaded Nested Split-Ring Resonator Inspired Balanced Bandpass Filter

Cai, Z Tang, X Li, Z Zhang, T Liu, Y Yang, Y

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Publisher:: IEEE
Publication Type:: Conference Proceeding
Citation:: IEEE MTT-S International Microwave Symposium Digest, 2019, 2019-June, pp. 967-970
Issue Date:: 2019-06-01

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Field	Value	Language
dc.contributor.author	Cai, Z
dc.contributor.author	Tang, X
dc.contributor.author	Li, Z
dc.contributor.author	Zhang, T
dc.contributor.author	Liu, Y
dc.contributor.author	Yang, Y https://orcid.org/0000-0001-7439-2156
dc.date	2019-06-02
dc.date.accessioned	2020-06-09T22:22:06Z
dc.date.available	2020-06-09T22:22:06Z
dc.date.issued	2019-06-01
dc.identifier.citation	IEEE MTT-S International Microwave Symposium Digest, 2019, 2019-June, pp. 967-970
dc.identifier.isbn	9781728113098
dc.identifier.issn	0149-645X
dc.identifier.issn	2576-7216
dc.identifier.uri	http://hdl.handle.net/10453/141216
dc.description.abstract	© 2019 IEEE. This paper presents a low phase noise differential oscillator by employing a balanced feedback bandpass filter (BPF) designed with the proposed stub-loaded nested split-ring resonator (SLNSRR). The proposed balanced BPF functions as a frequency stabilization element in its feedback loop. Taking advantage of the balanced structure, a high group delay is obtained by introducing a transition zero near the upper passband of feedback loop filter. The proposed differential oscillator can present a differential output with low phase noise performance. For proof of the concept, a 2 GHz differential oscillator has been designed, fabricated and measured. The measured results show that the 180o out-of-phase differential signals are obtained with almost the same peak-peak voltage among two channels. The output power is 9.18 dBm when oscillates at 2.004 GHz with the second harmonic suppression of 40.63 dB. The measured phase noise is -126.72 dBc/Hz at 100 kHz frequency offset. The figure-of-merit (FOM) at 100 kHz is -196.19 dBc/Hz. The phase noise performance of proposed differential oscillator is one of the best among open literatures.
dc.language	en
dc.publisher	IEEE
dc.relation.ispartof	IEEE MTT-S International Microwave Symposium Digest
dc.relation.ispartof	IEEE MTT-S International Microwave Symposium
dc.relation.isbasedon	10.1109/MWSYM.2019.8701014
dc.rights	© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.	en_US
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	A Low Phase Noise Differential Oscillator Employing Stub-Loaded Nested Split-Ring Resonator Inspired Balanced Bandpass Filter
dc.type	Conference Proceeding
utslib.citation.volume	2019-June
utslib.location.activity	Boston, MA, USA
utslib.for	0906 Electrical and Electronic Engineering
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2020-06-09T22:22:02Z
pubs.finish-date	2019-06-07
pubs.place-of-publication	Piscataway, USA
pubs.publication-status	Published
pubs.start-date	2019-06-02
pubs.volume	2019-June
dc.location	Piscataway, USA

Abstract:

© 2019 IEEE. This paper presents a low phase noise differential oscillator by employing a balanced feedback bandpass filter (BPF) designed with the proposed stub-loaded nested split-ring resonator (SLNSRR). The proposed balanced BPF functions as a frequency stabilization element in its feedback loop. Taking advantage of the balanced structure, a high group delay is obtained by introducing a transition zero near the upper passband of feedback loop filter. The proposed differential oscillator can present a differential output with low phase noise performance. For proof of the concept, a 2 GHz differential oscillator has been designed, fabricated and measured. The measured results show that the 180o out-of-phase differential signals are obtained with almost the same peak-peak voltage among two channels. The output power is 9.18 dBm when oscillates at 2.004 GHz with the second harmonic suppression of 40.63 dB. The measured phase noise is -126.72 dBc/Hz at 100 kHz frequency offset. The figure-of-merit (FOM) at 100 kHz is -196.19 dBc/Hz. The phase noise performance of proposed differential oscillator is one of the best among open literatures.

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http://hdl.handle.net/10453/141216