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Ubiquitous services are an inevitable trend of our future. Nowadays, there are many wireless technologies that can be used and provide services to mobile users. If we can integrate their respective advantages and design a system to create an ubiquitous multimedia environment, it will be very convenient for people. In this paper, we will use Zigbee (IEEE 802.15.4), NFC (Near-Field Communication), Bluetooth...
Multiple wireless network interfaces in a single mobile device exist in order to support their diverse communications and networking needs. This paper proposes a general switching architecture, SwitchR, for managing radio communications for multiple (client) devices utilizing multiple heterogeneous radios per device. SwitchR is deployable incrementally within existing wireless infrastructures, and...
A high intercept points, cost-effective, and power-efficient switching FET double balanced mixer (DBM) is reported. The Switching FET DBM demonstrated in this work offers input intercept points (IIP3) and conversion loss typically 44 dBm and 8.5 dB respectively with 15 dBm LO power for the frequency band (RF: 900-2150 MHz, LO: 850-1950 MHz, IF: 50-200 MHz). The measured interport isolation is typically...
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