Radio frequency and broadband circuits

射频和宽带电路

• 批准号: 121354-2008
• 负责人: Plett, Calvin
• 金额: $ 1.92万
• 依托单位: Carleton University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=503521
• 关键词: Radio; frequency; broadband; circuits

The proposed research consists of the exploration of fully integrated ultra-low power, short-range wireless communications circuits These circuits will be used to communicate to and from sensors, and potentially for radio-frequency identification (RFID). To achieve ultra-low power, these circuits will communicate with pulses which allows the system to be turned off easily between a set of pulses.Novel aspects of this research include the exploitation of on-chip antennas and of a fully integrated power source making use of scavenged power, where scavenged power sources could be ambient light, radio frequency fields, thermal gradients or vibration. While pulse mode communications systems, fully integrated antennas, and on-chip power sources have been demonstrated individually, the novelty here is that they are all used together, and the circuits are being designed with the antenna and power source in mind. As a result, the overall transceiver has the potential to be lower in power, smaller (of the order of a few square mm), and being fully integrated, to be lower cost. The small size is of obvious benefit to bio-medical sensors where large size can cause discomfort to patients to whom biomedical sensors are attached. As one example, in the case of sensors used in radiation therapy, small size and the absence of a battery results in less blockage or deflection of radiation. In RFID applications, small size will allow smaller items to be tagged, for example, jewelry. Benefits of low cost could allow these devices to be considered disposable in biomedical applications. In RFID applications, lower cost means it is more likely these devices would be used to identify lower cost items, for example to replace the bar codes in a grocery store. The design of the proposed low-power, low-cost communcations systems as applied to biomedical sensor would benefit the medical community. If the final goal of replacing barcodes is achieved, such a system would be of enormous benefit to all consumers. And finally, achieving lower power, smaller size and lower cost are universal goals in the electronics industry, so aspects of this research could be applicable to other fields, for example, consumer electronics, communications, and entertainment.

拟议的研究包括探索完全集成的超低功率、短距离无线通信电路，这些电路将用于与传感器进行通信，并有可能用于射频识别(RFID)。为了实现超低功率，这些电路将与脉冲通信，从而使系统能够在一组脉冲之间轻松关闭。这项研究的创新方面包括开发片上天线和利用扫频功率的全集成电源，其中扫频电源可以是环境光、射频场、温度梯度或振动。虽然脉冲模式通信系统、全集成天线和片上电源已经单独演示，但这里的新奇之处在于它们都是一起使用的，并且电路的设计考虑到了天线和电源。因此，整个收发信机有可能更低的功率，更小的(数量级几平方毫米)，并完全集成，以降低成本。小尺寸对生物医学传感器有明显的好处，因为大尺寸可能会给连接生物医学传感器的患者造成不适。例如，在放射治疗中使用传感器的情况下，小尺寸和没有电池会导致较少的辐射阻塞或偏转。在RFID应用中，较小的尺寸将允许标记较小的物品，例如珠宝。低成本的好处可以使这些设备在生物医学应用中被认为是一次性的。在RFID应用中，较低的成本意味着这些设备更有可能被用来识别成本较低的物品，例如取代杂货店的条形码。所提出的应用于生物医学传感器的低功耗、低成本通信系统的设计将使医学界受益。如果取代条形码的最终目标得以实现，这样的系统将为所有消费者带来巨大的好处。最后，实现低功耗、小体积和低成本是电子行业的普遍目标，因此本研究的方面可以适用于其他领域，例如消费电子、通信和娱乐。