Antennas for Base Stations in Wireless Communications by Zhi Ning Chen

By Zhi Ning Chen

Layout Antennas for contemporary instant Communications Systems
Written via a world crew of professional individuals, this booklet bargains entire info at the wide variety of antennas utilized in contemporary instant conversation networks. insurance comprises 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 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 desirable functionality. Real-world case reviews offer you sensible examples that may be utilized in your personal method designs.

• observe dimension concepts for varied parameters
• allow frequency re-use and channel ability 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 approach 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 quarter community (WPAN) functions, together with RFID and UWB

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One antenna is used for both transmitting and receiving. ■ Signals at more than one frequency are transmitted. Base stations normally have this entire feature set. Base stations, therefore, suffer from passive intermodulation (PIM). High-power signals excite the antenna of the base station, and intermodulation components cause back reflection to the receiver due to the antenna’s PIM. Since the receiver is highly sensitive and is able to sense very weak signals, the intermodulation signals cause interference.

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