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 VDD. 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.
%0 Conference Paper
%1 8244748
%A Ishida, K.
%A Meister, T.
%A Knobelspies, S.
%A Münzenrieder, N.
%A Cantarella, G.
%A Salvatore, G. A.
%A Tröster, G.
%A Carta, C.
%A Ellinger, F.
%B 2017 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)
%D 2017
%K myown
%P 1-4
%R 10.1109/COMCAS.2017.8244748
%T 3–5 V, 3–3.8 MHz OOK modulator with a-IGZO TFTs for flexible wireless transmitter
%U https://ieeexplore.ieee.org/document/8244748/
%X 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 VDD. 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.
@inproceedings{8244748,
abstract = {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 VDD. 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.},
added-at = {2023-05-22T12:03:45.000+0200},
author = {Ishida, K. and Meister, T. and Knobelspies, S. and Münzenrieder, N. and Cantarella, G. and Salvatore, G. A. and Tröster, G. and Carta, C. and Ellinger, F.},
biburl = {https://www.bibsonomy.org/bibtex/2ffd50d3d4cca5ac6bf0b87284aeab4e1/nikomu},
booktitle = {2017 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)},
doi = {10.1109/COMCAS.2017.8244748},
interhash = {ef549077da693096b466382363c2284b},
intrahash = {ffd50d3d4cca5ac6bf0b87284aeab4e1},
keywords = {myown},
month = nov,
pages = {1-4},
timestamp = {2023-05-22T12:03:45.000+0200},
title = {3–5 V, 3–3.8 MHz OOK modulator with a-IGZO TFTs for flexible wireless transmitter},
url = {https://ieeexplore.ieee.org/document/8244748/},
year = 2017
}