Linear periodically time-varying circuits for the Internet of Everything
Abstract/Contents
- Abstract
- As the Internet of Everything (IoE) ushers in an age with tens of billions of connected devices, there is a persistent demand for radio receivers to join this ever-growing network. In particular, low power consumption is a critical requirement in order to enable remote deployments and battery-powered operation while receiver linearity specifications are only moderate. With this in mind, the passive mixer-first receiver is an attractive option for the IoE because it requires no external components and offers baseband-controlled impedance matching, high-Q filtering, and RF input range over a decade or more; however, it requires high power to achieve low noise figure due to the lack of gain at RF. Recent work has demonstrated that a transformer--mixer cascade can facilitate significant power savings at the cost of increased area and restricted RF input range. In this dissertation, we propose a low-power passive N-path harmonic-rejection transformer-mixer for narrowband IoE applications. Composed of only switches and capacitors, this circuit integrates the behavior of a transformer and harmonic recombination into the passive mixer itself, providing voltage gain, harmonic-rejection, and high-Q filtering before any active components and while supporting a wide RF input range. We also propose a single-transistor amplifier with back-gate feedback for high power efficiency in the receiver baseband while maintaining sufficient linearity at low supply voltages. Prototype amplifier measurements in 22-nm FD-SOI demonstrate that back-gate feedback improves linearity by 6--20 dB and reduces device-to-device gain variation by 5--10× compared to a conventional design. Finally, we present measurements of a prototype receiver with an N-path harmonic-rejection transformer-mixer at its core and with back-gate feedback employed in the baseband amplifiers. The receiver occupies just 0.064 mm² in a 22-nm FD-SOI technology and consumes 0.6-1.8 mW across the operating range of 0.3--3.0 GHz. It achieves 3.4--4.8-dB NF, 14--18-dBm OB-IIP3, -5--0-dBm OB-B1dB, -8/-3-dBm H3/H5-B1dB, and < 1-dB NF degradation with a -15-dBm OB blocker, demonstrating that the proposed techniques enable power and area savings while achieving performance suitable for the IoE
Description
| Type of resource | text |
|---|---|
| Form | electronic resource; remote; computer; online resource |
| Extent | 1 online resource |
| Place | California |
| Place | [Stanford, California] |
| Publisher | [Stanford University] |
| Copyright date | 2022; ©2022 |
| Publication date | 2022; 2022 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Author | Weinreich, Stephen Butler |
|---|---|
| Degree supervisor | Murmann, Boris |
| Thesis advisor | Murmann, Boris |
| Thesis advisor | Arbabian, Amin |
| Thesis advisor | Lee, Thomas H, 1959- |
| Degree committee member | Arbabian, Amin |
| Degree committee member | Lee, Thomas H, 1959- |
| Associated with | Stanford University, Department of Electrical Engineering |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | Stephen Butler Weinreich |
|---|---|
| Note | Submitted to the Department of Electrical Engineering |
| Thesis | Thesis Ph.D. Stanford University 2022 |
| Location | https://purl.stanford.edu/fv238xg7998 |
Access conditions
- Copyright
- © 2022 by Stephen Butler Weinreich
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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