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Title: | A MEMS BPSK to ASK converter |
Authors: | Scerri, Jeremy Portelli, Barnaby Grech, Ivan Gatt, Edward Casha, Owen |
Keywords: | Microelectromechanical systems Mixing circuits Modulation (Electronics) |
Issue Date: | 2019 |
Publisher: | Emerald Publishing Limited |
Citation: | Scerri, J., Portelli, B., Grech, I., Gatt, E., & Casha, O. (2019). A MEMS BPSK to ASK Converter. Microelectronics International Journal, 36(1), 26-34. |
Abstract: | Purpose: The purpose of this paper is to investigate the feasibility of using micro electromechanical systems (MEMS) to convert a binary phase shift keying (BPSK) signal to a simpler amplitude shift keying (ASK) scheme. Design/methodology/approach : The prototype is designed within the SOIMUMPs® fabrication process constraints. The fabrication constraints imposed geometric limitations on what could be tested. These constraints were used to build a mathematical model, which in turn was used to optimize the response using MATLAB®. The optimized design was tested using finite element analysis with CoventorWare®, and finally lab tests on the fabricated device were performed to confirm theoretical predictions. Findings: Theoretical predictions compared well with lab measurements on a prototype device measuring 2.9 mm2. The prototype was tested with a carrier frequency of 174 kHz at a BPSK data rate of 3 kHz and carrier amplitude of 6 V. With these parameters, ASK modulation indices of 0.96 and 0.94 were measured at the two output sensors. Originality/value: This study provides a MEMS solution for BPSK to ASK conversion. The study also identifies what limits betterment of the modulation index and data rate. Such a device has potential application in wireless sensor network (WSN) nodes that have energy harvesters and sensors that are also built in MEMS. Being a MEMS device, it can facilitate integration in such WSN nodes and, hence, potentially reduce size and costs. |
URI: | https://www.um.edu.mt/library/oar/handle/123456789/59235 |
Appears in Collections: | Scholarly Works - FacICTMN |
Files in This Item:
File | Description | Size | Format | |
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A_MEMS_BPSK_to_ASK_converter_2019.pdf Restricted Access | 512.48 kB | Adobe PDF | View/Open Request a copy |
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