Download e-book for kindle: Antennas for Base Stations in Wireless Communications by Zhi Ning Chen

By Zhi Ning Chen

ISBN-10: 0071612882

ISBN-13: 9780071612883

ISBN-10: 0071612890

ISBN-13: 9780071612890

Layout Antennas for contemporary instant Communications Systems
Written through an international workforce of specialist members, this e-book deals whole info at the wide selection of antennas utilized in latest instant verbal exchange networks. assurance contains the preferred functions in WWAN (GSM, CDMA, and WCDMA), WLAN (Bluetooth and WiFi), WMAN (WiMAX), and WPAN (UWB and RFID).

Antennas for Base Stations in instant Communications provides an entire photo of contemporary base station antenna technology--from basics and parameters to engineering and complicated solutions--and highlights new applied sciences in antenna layout with more advantageous functionality. Real-world case reports give you sensible examples that may be utilized in your personal process designs.

• observe size concepts for varied parameters
• allow frequency re-use and channel means optimization in cellular radio networks
• layout antennas for cellular communications-CDMA, GSM, and WCDMA
• enforce complicated antenna applied sciences for GSM base stations
• Facilitate superior procedure potential
• layout unidirectional antennas, together with directed dipole, wideband patch, and complementary antennas
• Optimize antenna designs for WLAN (WiFi) applications
• layout antennas for instant own zone community (WPAN) functions, together with RFID and UWB

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New PDF release: Antennas for Base Stations in Wireless Communications

Layout Antennas for contemporary instant Communications Systems
Written by means of a world group of specialist individuals, this booklet bargains entire information at the wide selection of antennas utilized in brand new instant communique networks. assurance comprises the most well-liked functions in WWAN (GSM, CDMA, and WCDMA), WLAN (Bluetooth and WiFi), WMAN (WiMAX), and WPAN (UWB and RFID).

Antennas for Base Stations in instant Communications offers an entire photograph of contemporary base station antenna technology--from basics and parameters to engineering and complex solutions--and highlights new applied sciences in antenna layout with more suitable functionality. Real-world case experiences give you useful examples that may be utilized for your personal approach designs.

• follow dimension options for numerous parameters
• allow frequency re-use and channel capability optimization in cellular radio networks
• layout antennas for cellular communications-CDMA, GSM, and WCDMA
• enforce complicated antenna applied sciences for GSM base stations
• Facilitate more desirable method potential
• layout unidirectional antennas, together with directed dipole, wideband patch, and complementary antennas
• Optimize antenna designs for WLAN (WiFi) applications
• layout antennas for instant own region community (WPAN) purposes, together with RFID and UWB

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Extra info for Antennas for Base Stations in Wireless Communications

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For azimuth angles beyond the edges of the served cell, allowing some overlap for handoff control and optimization, the signal radiated by a BS antenna has no functional use and serves only to impair the C/I ratio in other cells. For this reason, it is desirable that beyond ±60° from boresight the azimuth pattern falls monotonically at as high a rate as practicable and that rearward radiation is suppressed. Although we are accustomed to seeing rooftop BS antennas in many cities, a substantial number of cells use antennas mounted at lower levels; these make use of the built environment to limit the area they cover—allowing more intensive frequency re-use—and they can more easily be disguised to reduce problems with planning consent.

J. Marhefka, Antennas for All Applications, 3rd edition, New York: McGraw-Hill Science/Engineering/Math, 2001. 4. W. L. Stutzman and G. A. , 1981. 5. ANSI/IEEE Standard Test Procedure for Antennas, ANSI/IEEE Std 149, New York: John Wiley Distributors, 1979. 6. Richard C. Johnson and Henry Jasik, Antenna Engineering Handbook, 2nd edition, New York: McGraw-Hill Book Company, 1984. 7. com. 8. S. Hienonen, “Studies on microwave antennas: passive intermodulation distortion in antenna structures and design of microstrip antenna elements,” Dissertation, Helsinki University of Technology Radio Laboratory, Espoo Finland, March 2005.

The relatively lowpower transmission does not reduce the quality of uplink as the base station is equipped with a highly sensitive receiver. In addition, the receiver sensitivity is not high at a client terminal, and the reflected PIM level is thus lower than the noise level. Similarly, the relatively lower receiver sensitivity does not degrade the downlink performance as a high-power signal is transmitted from the base station. An antenna’s PIM can be measured by a dedicated analyzer. For example, Summitek Instruments provides such an analyzer.

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Antennas for Base Stations in Wireless Communications by Zhi Ning Chen


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