Sharif Digital Repository

Radio-Frequency Identification (RFID) in many applications, namely supply chain management; access management; tracking commodity, people, and animals; and storage of medical information, to name but a few, be remembered as the most effective method of gathering information. Accordingly, accurate modeling and optimizing of this technology with attention to its daily development in varied applications, has a significant role. In this regard, some issues – that is – reader location, the number of tags that are controlled by a reader, and data communications of readers with central server, to name but a handful, are challenging and there are attemps to optimize the network in terms of cost,... 

An ultra-low-power wake-up receiver is proposed, which reduces the power consumption significantly under the two-mode duty-cycling and with negligible latency. Due to the use of an accurate LO and high Q BB filters, the receiver shows a perfect selectivity in the frequency domain, and appropriately fits practical dense environment applications. In this receiver, four start frame bits (SFB) are received at the low data rate of 1 kbps in the MO mode, and after entering the ID mode, a long wake-up pattern is received at the high data rate of 100 kbps. Therefore, the latency is limited to the SFBs and is roughly 4 msec. The proposed wake-up receiver is designed and fabricated in TSMC 180 nm...