Design of complementary class-c oscillator with tail current source feedback and noise suppression for wireless applications / Pravinah Nair Shasidharan
The performance of low-powered transceivers are required to meet stringent specifications for an advanced wireless radio application. It is critical for a voltage-controlled oscillator (VCO) to meet multi-standard and multiband operation with low-power consumption and sufficient gain. This paper pro...
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| Format: | Thesis |
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2019
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| Online Access: | http://studentsrepo.um.edu.my/11400/ http://studentsrepo.um.edu.my/11400/1/Pravinan_Nair.jpg http://studentsrepo.um.edu.my/11400/8/pravinah.pdf |
| _version_ | 1848774376069005312 |
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| author | Pravinah Nair, Shasidharan |
| author_facet | Pravinah Nair, Shasidharan |
| author_sort | Pravinah Nair, Shasidharan |
| building | UM Research Repository |
| collection | Online Access |
| description | The performance of low-powered transceivers are required to meet stringent specifications for an advanced wireless radio application. It is critical for a voltage-controlled oscillator (VCO) to meet multi-standard and multiband operation with low-power consumption and sufficient gain. This paper propose a novel technique for wide tuning range performance in a complementary class-C VCO employing a capacitive-source degeneration (CSD) to meet multi-standard operation for low-power transceivers. The technique which employs two sets of symmetrical split PMOS biased current source operating in subthreshold region achieves the desired low phase noise (PN) performance of below -120 dB/Hz at a tuning range of 2.2-to-2.9 GHz with a supply headroom of 1.2 V. The control of the dc bias point reduces the conduction angle which improves the current efficiency, power consumption and PN. Concurrently, an auxiliary �gm NMOS only class-B oscillator is incorporated to mitigate the start-up issue of the class-C VCO. At the center frequency of 2.45 GHz, the proposed VCO consumes a power of 1.73 mW, achieves a phase noise of -120 dBc/Hz at 1 MHz offset, and a figure - of - merit (FoM) of 185.41 dBc/Hz at 1 MHz. The total active chip area is only of 0.3-mm2 excluding bond pads. The proposed VCO serves as a promising solution for low-power wireless communication systems. |
| first_indexed | 2025-11-14T13:57:19Z |
| format | Thesis |
| id | um-11400 |
| institution | University Malaya |
| institution_category | Local University |
| last_indexed | 2025-11-14T13:57:19Z |
| publishDate | 2019 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | um-114002020-07-13T23:40:23Z Design of complementary class-c oscillator with tail current source feedback and noise suppression for wireless applications / Pravinah Nair Shasidharan Pravinah Nair, Shasidharan TK Electrical engineering. Electronics Nuclear engineering The performance of low-powered transceivers are required to meet stringent specifications for an advanced wireless radio application. It is critical for a voltage-controlled oscillator (VCO) to meet multi-standard and multiband operation with low-power consumption and sufficient gain. This paper propose a novel technique for wide tuning range performance in a complementary class-C VCO employing a capacitive-source degeneration (CSD) to meet multi-standard operation for low-power transceivers. The technique which employs two sets of symmetrical split PMOS biased current source operating in subthreshold region achieves the desired low phase noise (PN) performance of below -120 dB/Hz at a tuning range of 2.2-to-2.9 GHz with a supply headroom of 1.2 V. The control of the dc bias point reduces the conduction angle which improves the current efficiency, power consumption and PN. Concurrently, an auxiliary �gm NMOS only class-B oscillator is incorporated to mitigate the start-up issue of the class-C VCO. At the center frequency of 2.45 GHz, the proposed VCO consumes a power of 1.73 mW, achieves a phase noise of -120 dBc/Hz at 1 MHz offset, and a figure - of - merit (FoM) of 185.41 dBc/Hz at 1 MHz. The total active chip area is only of 0.3-mm2 excluding bond pads. The proposed VCO serves as a promising solution for low-power wireless communication systems. 2019-07 Thesis NonPeerReviewed application/pdf http://studentsrepo.um.edu.my/11400/1/Pravinan_Nair.jpg application/pdf http://studentsrepo.um.edu.my/11400/8/pravinah.pdf Pravinah Nair, Shasidharan (2019) Design of complementary class-c oscillator with tail current source feedback and noise suppression for wireless applications / Pravinah Nair Shasidharan. Masters thesis, University Malaya. http://studentsrepo.um.edu.my/11400/ |
| spellingShingle | TK Electrical engineering. Electronics Nuclear engineering Pravinah Nair, Shasidharan Design of complementary class-c oscillator with tail current source feedback and noise suppression for wireless applications / Pravinah Nair Shasidharan |
| title | Design of complementary class-c oscillator with tail current source feedback and noise suppression for wireless applications / Pravinah Nair Shasidharan |
| title_full | Design of complementary class-c oscillator with tail current source feedback and noise suppression for wireless applications / Pravinah Nair Shasidharan |
| title_fullStr | Design of complementary class-c oscillator with tail current source feedback and noise suppression for wireless applications / Pravinah Nair Shasidharan |
| title_full_unstemmed | Design of complementary class-c oscillator with tail current source feedback and noise suppression for wireless applications / Pravinah Nair Shasidharan |
| title_short | Design of complementary class-c oscillator with tail current source feedback and noise suppression for wireless applications / Pravinah Nair Shasidharan |
| title_sort | design of complementary class-c oscillator with tail current source feedback and noise suppression for wireless applications / pravinah nair shasidharan |
| topic | TK Electrical engineering. Electronics Nuclear engineering |
| url | http://studentsrepo.um.edu.my/11400/ http://studentsrepo.um.edu.my/11400/1/Pravinan_Nair.jpg http://studentsrepo.um.edu.my/11400/8/pravinah.pdf |