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Design of a Low-power Receiver in Bluetooth Low-energy Standard

Rahmanian Kooshkaki, Hossein | 2016

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 48912 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Fotowat Ahmady, Ali
  7. Abstract:
  8. One of the most important parameters of a smartphone is the ability to operate in a long time with a rechargeable battery. As a result, the design of radio frequency circuits which are used in these cell phones is a consistent challenge for designers. Bluetooth Low-Energy standard (BLE) which is the fourth edition of Bluetooth standard is recently introduced with the aim of transporting low volume data with minimum power consumption. The most important challenge of the design of an RF receiver in the BLE standard is the power consumption. In a typical receiver, the oscillator and the mixer are the most power hungry blocks. Therefore, decreasing the power consumption of these two blocks is the main purpose of this thesis. In this regard, a new mixer, the name of which is “Current-Driven Diode Mixer”, is introduced for the first time in this thesis. This new mixer can do the mixing operation with an LO power in the range of -12 dBm, reducing the power consumption of the LO so much so that the dc current consumption of LO block is 160 µA. The power consumption of the mixer block is 156 µw. The mixing operation of this new proposed mixer is comprehensively studied mathematically by a time domain analysis which is well-matched to simulation results. Based on this new proposed mixer, a 2.4 GHz receiver in BLE standard is designed using TSMC 180nm CMOS technology, and the post-layout simulation of this receiver is reported. The receiver includes the transconductance amplifier, current-driven diode mixer, oscillator, active polyphase filter, and baseband complex filter. The power consumption of the receiver is 1.1mw and the supply voltage is 1.4v
  9. Keywords:
  10. Oscillators ; Mixer ; Smart Phones ; Power Consumption ; Bluetooth Standard ; Complementary Metal Oxide Semiconductor Technology (CMOS)

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