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Characterization Presentation Cellular Device Detection

Characterization Presentation Cellular Device Detection. Instructor : Yossi Hipsh Performed by : Ari Avitzur Asher Pilai Winter 2008/9 Semesterial Project. Project Goals. Designing & activating a system which detects cellular activity and its specific location in a room.

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Characterization Presentation Cellular Device Detection

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  1. Characterization Presentation Cellular Device Detection Instructor:YossiHipshPerformed by:Ari Avitzur Asher Pilai Winter 2008/9 Semesterial Project

  2. Project Goals • Designing & activating a system which detects cellular activity and its specific location in a room. • By using two phased array antenna’s that each sends a multi beam, The system will detect all the active cellular devices and display their specific location in the room.

  3. Project Goals • The required location (in theory) is in (X,Y,Z) coordinates. • In practice , we will find only one coordinate – the objet will be on a given line, in a given height. • After success in the simulation we will extend to a full (X,Y,Z) search.

  4. Equipment • The phase array antenna’s and the transmitting antenna that simulates the cellular phone are both from the past projects. • The DSP or other hardware or software that required to location will be produced in the project.

  5. The room description 4.6m Antenna A Antenna B 2m

  6. Inputs – general specifications • Room size : 4.6mX2m. • 2 Multi-beam antenna at each side of the room for full coverage. • The antennas and the cell-phone are placed on shelf in the room • The antenna-shelf are 2m high. • The cell-phone-shelf is 1.73m high.

  7. Inputs – general specifications (Continue) • More than one active cellular phone in the room at the same time. • All the cellular companies in Israel: Partner, Pelephone, Cellcom.

  8. Inputs – general specifications (Continue…)

  9. System description Computing & Display Unit ADC Amp detector Antenna A Amp detector Cellphone Amp detector Antenna B Amp detector

  10. Power consideration Gain =? 0.1 Watt 2.52 µWatt 2.52 µWatt Amp Cellphone Antenna A Amp

  11. Power consideration (continue) • We use the equation : • Pt = 0.1 Watt, Gt = 0dB = 1 • R = 2.41m • Δ= (wave length) = 0.17m • Gr = 9dB =7.94

  12. Theory of detection • An RF signal is been received in the antennas • After it’s been amplified , the signal goes through the power detector – that outputs the max. power of the signal. • It been converted to a binary word. • The computing unit calculates the angle out of the power result. 5. With 2 angles – we can locate the cell-phone.

  13. Progress so far • System Overview Specifications Understanding of Basic Idea Learning how to work with oscilloscope and pulse-generator • Characterization Amplifier

  14. Time Schedule 10.12.08 -1 week Characterization of detectors 17.12.08 - 1 week Characterization of detectors – continue learning Basic multi-beams antennas 24.12.08 -1 weeks Characterization of antennas Midterm presentation – 29-30.12.08

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