ZyXEL NWA-3100 User’s Guide
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A
P P E N D I X
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Indoor Installation
Recommendations
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
approximately 2.5%. For an unobstructed outdoor site, each 1dB increase in gain results in a
range increase of approximately 5%. Actual results may vary depending on the network
environment.
Antenna gain is sometimes specified in dBi, which is how much the antenna increases the
signal power compared to using an isotropic antenna. An isotropic antenna is a theoretical
perfect antenna that sends out radio signals equally well in all directions. dBi represents the
true gain that the antenna provides.
Types of Antennas For WLAN
There are two types of antennas used for wireless LAN applications.
Содержание NWA-3100
Страница 1: ...www zyxel com NWA 3100 802 11a b g Wireless Access Point User s Guide Version 3 60 10 2006 Edition 1...
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Страница 7: ...Safety Warnings ZyXEL NWA 3100 User s Guide 7...
Страница 8: ...Safety Warnings ZyXEL NWA 3100 User s Guide 8...
Страница 10: ...Contents Overview ZyXEL NWA 3100 User s Guide 10...
Страница 24: ...List of Figures ZyXEL NWA 3100 User s Guide 24...
Страница 28: ...List of Tables ZyXEL NWA 3100 User s Guide 28...
Страница 29: ...29 PART I Introduction Introducing the ZyXEL Device 31 Introducing the Web Configurator 39 Tutorial 43...
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Страница 60: ...Chapter 3 Tutorial ZyXEL NWA 3100 User s Guide 60...
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Страница 104: ...Chapter 7 MBSSID and SSID ZyXEL NWA 3100 User s Guide 104...
Страница 116: ...Chapter 9 IP Screen ZyXEL NWA 3100 User s Guide 116...
Страница 132: ...Chapter 11 Remote Management ZyXEL NWA 3100 User s Guide 132...
Страница 150: ...Chapter 12 Certificates ZyXEL NWA 3100 User s Guide 150...
Страница 174: ...Chapter 14 VLAN ZyXEL NWA 3100 User s Guide 174...
Страница 184: ...Chapter 15 Maintenance ZyXEL NWA 3100 User s Guide 184...
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Страница 198: ...Chapter 20 System Password ZyXEL NWA 3100 User s Guide 198...
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Страница 232: ...Appendix A Product Specifications ZyXEL NWA 3100 User s Guide 232...
Страница 244: ...Appendix B Setting up Your Computer s IP Address ZyXEL NWA 3100 User s Guide 244...
Страница 248: ...Appendix C IP Address Assignment Conflicts ZyXEL NWA 3100 User s Guide 248...
Страница 258: ...Appendix D Wireless LANs ZyXEL NWA 3100 User s Guide 258...
Страница 282: ...Appendix H Text File Based Auto Configuration ZyXEL NWA 3100 User s Guide 282...
Страница 286: ...Appendix I Legal Information ZyXEL NWA 3100 User s Guide 286...