Characterization Presentation 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. 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.

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.

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.

Antenna AAntenna B 4.6m 2m The room description

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.

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.

Inputs – general specifications (Continue…) Transmission FrequencyCompany MHz MHz MHz MHz Partner MHz MHz MHz MHz Cellcom MHz MHz MHz MHz Pelephone

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

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

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

Theory of detection 1.An RF signal is been received in the antennas 2.After it’s been amplified, the signal goes through the power detector – that outputs the max. power of the signal. 3.It been converted to a binary word. 4.The computing unit calculates the angle out of the power result. 5. With 2 angles – we can locate the cell-phone.

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

Time Schedule week Characterization of detectors week Characterization of detectors – continue learning Basic multi-beams antennas weeks Characterization of antennas Midterm presentation –