Analog Characteristics of Fully Printed Flexible Organic Transistors Fabricated With Low-Cost Mass-Printing Techniques

Kheradmand‐Boroujeni, Bahman; Schmidt, G.; Hoft, D. J.; Shabanpour, R.; Perumal, Charles; Meister, Tilo; Ishida, Koichi; Carta, Corrado; Hübler, Arved C.; Ellinger, Frank

doi:10.1109/ted.2014.2315038

Cited by 23 publications

(25 citation statements)

References 21 publications

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“…The measured 1 dB compression point is 9 dBV (≈ 8 V pp ). The simulated frequency response of the chain of Amp 1 with Amp 2 proved that the proposed amplifiers can drive the printed loudspeakers presented in [7], [8] for audio applications with a low dc power consumption of 30 mW. …”

Section: Discussionmentioning

confidence: 77%

“…10. The peak to peak output voltage is 6 V pp , which would drive the 16 cm 2 printed loudspeaker [7], [8] at a 55 dB sound-pressure output at 10 kHz. Fig.…”

Section: Measurement Resultsmentioning

confidence: 99%

“…Gates of these cascode stages are biased externally to provide more flexibility to contract process variations such as threshold shifts by adjusting each transistor bias point individually during the circuit life time. Printed loudspeaker structure, and sound pressure levels of 16 cm 2 and 128 cm 2 printed loudspeaker [7], [8]. Fig.…”

Section: Circuit Designmentioning

confidence: 99%

“…The parts other than baseband amplifiers in this block diagram have been successfully implemented and characterized in the previous works [5], [6]. For the output stage of this system, our contribution is the design of baseband amplifiers, namely the pre-amplifier (Amp 1) and the audio amplifier (Amp 2), which produce the suitable drive to operate the flexible loudspeakers at the desire operation point [7], [8].…”

Section: Introductionmentioning

confidence: 99%

“…The printed piezoelectric loudspeaker produces sound using the piezoelectric effect with a peak-to-peak input signal of 3 − 50 V pp [8]. Fig.…”

Section: Introductionmentioning

confidence: 99%

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Baseband amplifiers in a-IGZO TFT technology for flexible audio systems

Shabanpour

Carta

Ishida

et al. 2015

2015 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS)

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This work shows two baseband amplifiers, which are suitable for audio system applications. The amplifiers are implemented in a flexible a-IGZO thin-film transistor (TFT) technology. They should be capable of driving printed piezoelectric loudspeakers. One of these circuits is a two-stage cascode amplifier, which is operating at 6 V DC supply voltage (V DD ). It has a voltage gain of 31 dB over a 3 dB bandwidth of 252 kHz with a DC power consumption as low as 1.5 mW. This amplifier is used as a pre-audio amplifier for driving the audio amplifier. The audio amplifier is a two-stage common-source (CS) circuit with a source-follower stage as a buffer, and is characterized with an 18 V V DD . The measured voltage gain of audio amplifier is 21.5 dB with a 3 dB bandwidth of 55 kHz from a DC power of 30 mW. The simulation of frequency responses of these circuits shows that the amplifiers can drive the loudspeakers with areas of 16 cm 2 and 128 cm 2 . The load of this audio system is the model of printed loudspeaker with specific characterizations of manufacturer.

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Section: Discussionmentioning

confidence: 77%

“…10. The peak to peak output voltage is 6 V pp , which would drive the 16 cm 2 printed loudspeaker [7], [8] at a 55 dB sound-pressure output at 10 kHz. Fig.…”

Section: Measurement Resultsmentioning

confidence: 99%

Section: Circuit Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…The printed piezoelectric loudspeaker produces sound using the piezoelectric effect with a peak-to-peak input signal of 3 − 50 V pp [8]. Fig.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Baseband amplifiers in a-IGZO TFT technology for flexible audio systems

Shabanpour

Carta

Ishida

et al. 2015

2015 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS)

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Advanced Organic Permeable‐Base Transistor with Superior Performance

et al. 2015

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An Overview of the Development of Flexible Sensors

et al. 2017

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Flexible sensors that efficiently detect various stimuli relevant to specific environmental or biological species have been extensively studied due to their great potential for the Internet of Things and wearable electronics applications. The application of flexible and stretchable electronics to device-engineering technologies has enabled the fabrication of slender, lightweight, stretchable, and foldable sensors. Here, recent studies on flexible sensors for biological analytes, ions, light, and pH are outlined. In addition, contemporary studies on device structure, materials, and fabrication methods for flexible sensors are discussed, and a market overview is provided. The conclusion presents challenges and perspectives in this field.

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Analog Characteristics of Fully Printed Flexible Organic Transistors Fabricated With Low-Cost Mass-Printing Techniques

Cited by 23 publications

References 21 publications

Baseband amplifiers in a-IGZO TFT technology for flexible audio systems

Baseband amplifiers in a-IGZO TFT technology for flexible audio systems

Advanced Organic Permeable‐Base Transistor with Superior Performance

An Overview of the Development of Flexible Sensors

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