By Chao-Chieh Hsu and Shao-Hsune Lee , Winter 2002
Introduction - Location Manager
Phase 1 : Point to Point Data transmission Link.
1. Requirement
2. Evaluation
1. IC selection Transmitter , Receiver
2. Frequency and distance calculation
3. Crystal and Rx Mode selection
4. Build Tx and Rx Module
5. First test
1. What should the software do
2. Use Com Port in Visual Basic
3. Talk mode and Error test mode
4. Miscellaneous Notes
5. Software Test 1 PC , 2 PCs
1. Interface
2. Power integration
3. 1 PC Tx, Rx Test --> Noise Problem --> Double Diodes scheme.
4. 2 PCs test, Successful but short distance
1. 1/2 λ Loop antenna with a compensate inductor
2. Observation: with loop and without loop
6. Dipole Antenna Configuration
1.Polarization Issue
2. Cut the loop
3.Change Loop antenna to Dipole antenna
4.Antenna Test
1. Environment
2. Data Transmission: 1200bps & 2400kbps
3. IC-1000 Received Power
4. Analysis
5. Power consumption