Antenna Reception:Signal Quality vs' Packaging Michael Montero, Umair Udaud, Trevor Pering and Paul

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Antenna ReceptionSignal Quality vs. Packaging
Michael Montero, Umair Udaud, Trevor Pering and
Paul Wright
Overall Objectives
Intels Wireless Personal Server
Areas of Investigation

• Improve antenna transmission or reception for the
  personal server
• Modify antenna
• Reposition PCB components
• Modify case design
• Identify optimal conditions for usage
• Develop an empirical model for antenna
  performance

Radiation Pattern Setup
Radiation Pattern Results
Measurements Conducted within the Barn

• Radiation patterns for all 3 orientations (XY,
  YZ, and XZ)
• Identification of lowest signal strengths or dead
  zones
• YZ orientation resembles that of device worn on a
  persons hip
• YZ radiation pattern will help in set up of torso
  experiments

Spectrum Analyzer
TEM Receiving Antenna
Personal Server
L
Body Torso Experimental Design
Mechanical Design Effects on Transmission Strength
Mechanical Design Factor Selection and
Experimental Design
Objective Evaluate the effect of different body
types on antenna performance. In addition, look
at effects of common electronics worn by people
on antenna performance.
Power
Material
Given 6 factors at 2 levels We could potentially
have to test 64 combinations (26)
Transmission Strength

• Exp. 1
• Body type categories (Men) w/ 2 replicates at
  least
• Below average (Waist Size ? 30-32)
• Average (Waist Size ? 33-35)
• Above average (Waist Size ? 36 or greater)

Geometry
Antenna
Personal Server Assembled with FDM Case

• Exp. 2
• Using average body type, vary following
  parameters
• Cellphone (In pocket or not)
• PDA (In pocket or not)
• Watch (On wrist or not)
• Keys (In pocket or not)
• Positioning of electronics relative to personal
  server

If we fractionate, we have a choice between 16 or
8 runs 2IV6-2 or 2III6-3 respectively.
Section View of PCB and Case with Top Case Hidden