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  • Phase Locked Loop Systems Design for Wireless Infrastructure Applications
    signals to RF signals or vice versa. There are different ways of integrating PLL system blocks,. including voltage-controlled oscillators (VCO), based on system requirements, performance and material cost. Why PLL performance is critical in wireless system design will be determined first, followed
  • Design Concepts for Semiconductor based Ultra-Linear Varactor Circuits (Invited)
    ” high impedance is used to connect to. to be incompatible with the linearity requirements of. the center-tap termination. Under these conditions,. modern wireless communication systems. To improve. all distortion components at the RF terminals are. the linearity, recently, several specific varactor
  • Introduction to the BodyCom Technology
    SOLUTION. Traditional wireless remote access systems rely on an. RF link, with a typical range of 400 to 900 MHz. While. providing the convenience of remote control, these. systems also require manual activation by the user and. an additional level of security to prevent “sniffing” of the. security codes
  • Budgeting Harmonics for ZigBee Front End Modules
    The growth of low power, cost effective wireless systems is driving more applications to use ZigBee protocol. While for some. of them, the signal needs to propagate over a short range, when covering a large building or operating outdoor over a wide. range for example, the system may benefit from
  • Medical Device Link .
    are packaged components mounted on circuit boards, which in turn are installed in instrument cases to be placed next to or connected to a patient. Advances in sensor technologies are beginning to make it possible for entire instruments to be integrated with a wireless communication channel on a single
  • PIC16F639 Microcontroller Overview
    due. to a long decay time of strong RF signals. A significant advantage that the PIC16F639 device. has, when compared to similar devices in the market-. place, is that it can demodulate weakly modulated input. signals. Figure 2 shows an example of the device’s demodulated. output for an input

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