Cascode current mirror for a variable gain stage in a 1.8 GHz low noise amplifier (LNA)
A high frequency CMOS variable gain low noise amplifier (VGLNA) constructed based on an inductive source degenerated LNA and a cascode current mirror is proposed. The 'variable' concept is to prevent the unwanted saturation phenomenon due to large input signal. A cascode current mirror ce...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Electrical Engineering/Electronics, Computer, Communications and Information Technology Association
2008
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| Online Access: | http://psasir.upm.edu.my/id/eprint/13495/ http://psasir.upm.edu.my/id/eprint/13495/1/Cascode%20current%20mirror%20for%20a%20variable%20gain%20stage%20in%20a%201.pdf |
| _version_ | 1848842128069754880 |
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| author | Lee, Lini Mohd Sidek, Roslina Jamuar, Sudhanshu Shekhar Khatun, Sabira |
| author_facet | Lee, Lini Mohd Sidek, Roslina Jamuar, Sudhanshu Shekhar Khatun, Sabira |
| author_sort | Lee, Lini |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | A high frequency CMOS variable gain low noise amplifier (VGLNA) constructed based on an inductive source degenerated LNA and a cascode current mirror is proposed. The 'variable' concept is to prevent the unwanted saturation phenomenon due to large input signal. A cascode current mirror cell which consumes minimal voltage headroom without sacrificing the accuracy of the circuit is proposed in the circuit. With a 0.18 m CMOS technology, this
technique is applied on a VGLNA operating at 1.8 GHz for GSM band application. The simulation results reveal that the maximum gain is 17.29 dB with gain tuning range of 9.56 dB. The noise figure (NF)is less than 0.92 dB with the power consumption of 9.34 mW at power supply of 1.8 V. Comparison with several same operating frequency LNA circuits published show that this work demonstrated among the lowest NF and highest IIP3 with compromise on the
gain. |
| first_indexed | 2025-11-15T07:54:12Z |
| format | Article |
| id | upm-13495 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T07:54:12Z |
| publishDate | 2008 |
| publisher | Electrical Engineering/Electronics, Computer, Communications and Information Technology Association |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-134952015-10-05T08:08:54Z http://psasir.upm.edu.my/id/eprint/13495/ Cascode current mirror for a variable gain stage in a 1.8 GHz low noise amplifier (LNA) Lee, Lini Mohd Sidek, Roslina Jamuar, Sudhanshu Shekhar Khatun, Sabira A high frequency CMOS variable gain low noise amplifier (VGLNA) constructed based on an inductive source degenerated LNA and a cascode current mirror is proposed. The 'variable' concept is to prevent the unwanted saturation phenomenon due to large input signal. A cascode current mirror cell which consumes minimal voltage headroom without sacrificing the accuracy of the circuit is proposed in the circuit. With a 0.18 m CMOS technology, this technique is applied on a VGLNA operating at 1.8 GHz for GSM band application. The simulation results reveal that the maximum gain is 17.29 dB with gain tuning range of 9.56 dB. The noise figure (NF)is less than 0.92 dB with the power consumption of 9.34 mW at power supply of 1.8 V. Comparison with several same operating frequency LNA circuits published show that this work demonstrated among the lowest NF and highest IIP3 with compromise on the gain. Electrical Engineering/Electronics, Computer, Communications and Information Technology Association 2008 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/13495/1/Cascode%20current%20mirror%20for%20a%20variable%20gain%20stage%20in%20a%201.pdf Lee, Lini and Mohd Sidek, Roslina and Jamuar, Sudhanshu Shekhar and Khatun, Sabira (2008) Cascode current mirror for a variable gain stage in a 1.8 GHz low noise amplifier (LNA). ECTI Transactions on Electrical Engineering, Electronics, and Communications, 6 (1). pp. 47-52. ISSN 1685-9545 http://www.ecti-thailand.org/paper/views/238 |
| spellingShingle | Lee, Lini Mohd Sidek, Roslina Jamuar, Sudhanshu Shekhar Khatun, Sabira Cascode current mirror for a variable gain stage in a 1.8 GHz low noise amplifier (LNA) |
| title | Cascode current mirror for a variable gain stage in a 1.8 GHz low noise amplifier (LNA) |
| title_full | Cascode current mirror for a variable gain stage in a 1.8 GHz low noise amplifier (LNA) |
| title_fullStr | Cascode current mirror for a variable gain stage in a 1.8 GHz low noise amplifier (LNA) |
| title_full_unstemmed | Cascode current mirror for a variable gain stage in a 1.8 GHz low noise amplifier (LNA) |
| title_short | Cascode current mirror for a variable gain stage in a 1.8 GHz low noise amplifier (LNA) |
| title_sort | cascode current mirror for a variable gain stage in a 1.8 ghz low noise amplifier (lna) |
| url | http://psasir.upm.edu.my/id/eprint/13495/ http://psasir.upm.edu.my/id/eprint/13495/ http://psasir.upm.edu.my/id/eprint/13495/1/Cascode%20current%20mirror%20for%20a%20variable%20gain%20stage%20in%20a%201.pdf |