Title:
A transformer-based poly-phase network for ultra-broadband quadrature signal generation
A transformer-based poly-phase network for ultra-broadband quadrature signal generation
| dc.contributor.advisor | Wang, Hua | |
| dc.contributor.author | Park, Jong Seok | |
| dc.contributor.committeeMember | Bakir, Muhannad | |
| dc.contributor.committeeMember | Cressler, John | |
| dc.contributor.department | Electrical and Computer Engineering | |
| dc.date.accessioned | 2017-01-11T14:06:05Z | |
| dc.date.available | 2017-01-11T14:06:05Z | |
| dc.date.created | 2016-12 | |
| dc.date.issued | 2016-12-08 | |
| dc.date.submitted | December 2016 | |
| dc.date.updated | 2017-01-11T14:06:05Z | |
| dc.description.abstract | This paper presents a transformer-based poly-phase network to generate fully differential quadrature signals with low loss, compact area, and high-precision magnitude and phase balance over an ultra-wide bandwidth. A fully differential high-coupling 8-port folded transformer-based quadrature hybrid serves as the basic building block for the poly-phase unit stage to achieve significant size reduction and low loss. Multiple poly-phase unit stages can be cascaded to form the multistage poly-phase network to substantially extend the quadrature signal generation bandwidth. The designs of the high-coupling transformer-based quadrature hybrid, the poly-phase unit stage, and the multistage transformer-based poly-phase network are presented with the closed-form design equations in this paper. As a proof-of-concept design, a 3-stage transformer-based poly-phase network is implemented in a standard 65 nm bulk CMOS process with a core area of 772 μm 925 μm. Measurement results of this poly-phase network over 3 independent samples demonstrate that the output In-Phase and Quadrature (I/Q) magnitude mismatch is less than 1 dB from 2.8 GHz to 21.8 GHz with a passive loss of 3.65 dB at 6.4 GHz. The measured output I/Q phase error is less than 10° from 0.1 GHz to 24 GHz. The effective Image Rejection Ratio (IRR) based on the measured I/Q balancing is more than 30 dB from 3.7 GHz to 22.5 GHz. The 3-stage transformer-based poly-phase network design achieves high-quality quadrature signal generation over a first-ever one-decade bandwidth together with low-loss and compact area. | |
| dc.description.degree | M.S. | |
| dc.format.mimetype | application/pdf | |
| dc.identifier.uri | http://hdl.handle.net/1853/56361 | |
| dc.language.iso | en_US | |
| dc.publisher | Georgia Institute of Technology | |
| dc.subject | Broad band | |
| dc.subject | CMOS | |
| dc.subject | Poly-phase | |
| dc.subject | Quadrature generation | |
| dc.subject | Transformer | |
| dc.title | A transformer-based poly-phase network for ultra-broadband quadrature signal generation | |
| dc.type | Text | |
| dc.type.genre | Thesis | |
| dspace.entity.type | Publication | |
| local.contributor.advisor | Wang, Hua | |
| local.contributor.corporatename | School of Electrical and Computer Engineering | |
| local.contributor.corporatename | College of Engineering | |
| relation.isAdvisorOfPublication | dce3ac41-daef-421b-975d-b0cbd27f9303 | |
| relation.isOrgUnitOfPublication | 5b7adef2-447c-4270-b9fc-846bd76f80f2 | |
| relation.isOrgUnitOfPublication | 7c022d60-21d5-497c-b552-95e489a06569 | |
| thesis.degree.level | Masters |