Abstract
Development of a low-power, small-size transmitter is needed for wireless sensor networks. An effective way to reduce power consumption is to reduce the operating time in a voltage-controlled oscillator. In this study, a 2.4 GHz on–off keying transmitter circuit is designed and implemented with an electrically small antenna using a left-handed transmission line. The transmitter circuit was fabricated with a standard 0.18 μm CMOS technology, while the antenna was fabricated with a 3.0 × 4.5 cm printed circuit board, chip capacitors, and chip inductors. Measured output power was −6.8 dBm with a power consumption of 3.59 mW when the baseband signal was always “high”. The power consumption was reduced to 1.96 mW for the baseband signal with a mark ratio of 0.5.
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Acknowledgments
This work was partially supported by SCOPE, and by VDEC in collaboration with Cadence Design Systems, Inc., and Agilent Technologies Japan, Ltd.
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Hiraishi, K., Wada, T., Kubo, K. et al. Low-power, small-size transmitter module with metamaterial antenna. Analog Integr Circ Sig Process 83, 1–9 (2015). https://doi.org/10.1007/s10470-015-0499-x
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DOI: https://doi.org/10.1007/s10470-015-0499-x