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3–5 V, 3–3.8 MHz OOK modulator with a-IGZO TFTs for flexible wireless transmitter

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conference contribution
posted on 2023-06-09, 11:30 authored by K Ishida, T Meister, S Knobelspies, Niko Munzenrieder, G Cantarella, G A Salvatore, G Troster, C Carta, F Ellinger
This paper presents an On-Off-Keying (OOK) modulator for a flexible and wearable wireless transmitter implemented in an amorphous-Indium-Gallium-Zinc-Oxide (a-IGZO) TFT technology. The circuit consists of a three-stage ring oscillator for the carrier and an output driver with an OOK modulation switch, realized with just five transistors. In order to maximize the operation frequency, we use 2 µm-long nMOS transistors in the circuit design. The proposed OOK modulator is fabricated on a polyimide flexible substrate, and characterized with 3-to-5 V supply voltages and an output load capacitance of 15 pF. The circuit operates from the lowest supply voltage of 3 V, while the highest measured oscillation frequency is 3.76 MHz at 5 V V DD . Although the schematic is simple and straight forward, the equivalent modulation depth ranges from 61.3 % to 78.2 %, which can be detected with an existing AM/OOK receiver in the same technology. The power consumptions for 3 V and 5 V supply voltages are 2.15 mW and 6.77 mW, respectively.

History

Publication status

  • Published

File Version

  • Accepted version

Journal

2017 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)

Publisher

IEEE

Page range

1-4

Event name

Microwaves, Antennas, Communications and Electronic Systems (COMCAS), 2017 IEEE International Conference on

Event location

Tel-Aviv, Israel

Event type

conference

Event date

13-15 Nov. 2017

Book title

2017 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)

Department affiliated with

  • Engineering and Design Publications

Research groups affiliated with

  • Sensor Technology Research Centre Publications

Notes

© 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2018-01-10

First Open Access (FOA) Date

2018-01-10

First Compliant Deposit (FCD) Date

2018-01-10

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