Abstract
This work proposes a wideband transconductance enhancement CMOS LNA with multiple feedback technique. Two positive-feedback loops are used to alleviate the restricted gm value for input matching of the CG LNA. By using a triple-well process, the bulk cross-coupling connection between the common-gate amplifiers enhances the transconductance (gm) of the input stage, thus saving power consumption and reducing NF. A negative-feedback loop is also used to boost gm, lowering the input impedance and raising the voltage gain. An amplifier prototype was realized in 90-nm CMOS technology, operating from 10 to 1010 MHz, and dissipating 5.68 mW from 2-V supply while occupying a 0.048-mm2 core area. The LNA delivers a maximum power gain of 11.5 dB, a minimum NF of 2.14 dB, and a third-order intermodulation intercept point of -0.85 dBm.
| Original language | English |
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| Title of host publication | 2015 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems, COMCAS 2015 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Electronic) | 9781479974733 |
| DOIs | |
| State | Published - 17 12 2015 |
| Externally published | Yes |
| Event | IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems, COMCAS 2015 - Tel-Aviv, Israel Duration: 02 11 2015 → 04 11 2015 |
Publication series
| Name | 2015 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems, COMCAS 2015 |
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Conference
| Conference | IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems, COMCAS 2015 |
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| Country/Territory | Israel |
| City | Tel-Aviv |
| Period | 02/11/15 → 04/11/15 |
Bibliographical note
Publisher Copyright:© 2015 IEEE.
Keywords
- CMOS
- common gate (CG)
- feedback
- low-noise amplifier (LNA)
- wideband