期刊
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
卷 23, 期 4, 页码 214-216出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMWC.2013.2251461
关键词
Flexible substrates; green electronics; microwave circuits; oscillators; paper substrates; RFID; wireless sensors
资金
- GRETA project under Task [A2.4]
A 1.2V, 0.9mW, 998MHz voltage controlled oscillator (VCO) adopting a distributed hairpin resonator in paper substrate is described. The microstrip resonator exploits a copper adhesive tape that is shaped by a photo-lithographic process and transferred to the hosting substrate using a sacrificial layer. To minimize the number of components, a cross-coupled differential VCO circuit is adopted. As a consequence only 3 external devices are necessary: a single-package BJT pair, a resistor and a by-pass capacitor. The measurements show a phase noise of -99 dBc/Hz at 100 KHz offset from the carrier. At 1.2 V the output power is -22 dBm, whereas the tuning sensitivity is about -100 MHz/V. The proposed design shows the feasibility of low-power oscillators for autonomous wireless sensors based on green materials.
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