Appendix B Wireless LANs
DMA-1000 Series User’s Guide
91
Figure 45
Infrastructure WLAN
Antenna Overview
An antenna couples RF signals onto air. A transmitter within a wireless device sends an RF
signal to the antenna, which propagates the signal through the air. The antenna also operates in
reverse by capturing RF signals from the air.
Positioning the antennas properly increases the range and coverage area of a wireless LAN.
Antenna Characteristics
Frequency
An antenna in the frequency of 2.4GHz (IEEE 802.11b) or 5GHz(IEEE 802.11a) is needed to
communicate efficiently in a wireless LAN.
Radiation Pattern
A radiation pattern is a diagram that allows you to visualize the shape of the antenna’s
coverage area.
Antenna Gain
Antenna gain, measured in dB (decibel), is the increase in coverage within the RF beam width.
Higher antenna gain improves the range of the signal for better communications.
For an indoor site, each 1 dB increase in antenna gain results in a range increase of
Summary of Contents for DMA-1000 Series
Page 2: ......
Page 7: ...Safety Warnings DMA 1000 Series User s Guide 7 ...
Page 8: ...Safety Warnings DMA 1000 Series User s Guide 8 ...
Page 10: ...Contents Overview DMA 1000 Series User s Guide 10 ...
Page 14: ...Table of Contents DMA 1000 Series User s Guide 14 ...
Page 18: ...List of Figures DMA 1000 Series User s Guide 18 ...
Page 24: ...Chapter 1 Introducing the DMA DMA 1000 Series User s Guide 24 ...
Page 38: ...Chapter 4 Favorites Playlists DMA 1000 Series User s Guide 38 ...
Page 42: ...Chapter 6 USB Menu DMA 1000 Series User s Guide 42 Figure 18 USB Menu ...
Page 46: ...Chapter 7 MUSIC Menu DMA 1000 Series User s Guide 46 ...
Page 50: ...Chapter 8 PHOTO Menu DMA 1000 Series User s Guide 50 ...
Page 70: ...Chapter 9 Configuring the DMA DMA 1000 Series User s Guide 70 ...
Page 78: ...Chapter 11 Troubleshooting DMA 1000 Series User s Guide 78 ...
Page 88: ...Appendix A Product Specifications DMA 1000 Series User s Guide 88 ...
Page 114: ...Appendix C Setting up Your Computer s IP Address DMA 1000 Series User s Guide 114 ...
Page 182: ...Appendix G Legal Information DMA 1000 Series User s Guide 182 ...