Low Cost Base Station Antenna Covering UMTS, DCS1800 and DECT Frequency Bands


S. Sevskiy, D. Löffler, and W. Wiesbeck, 11th Conference and Exhibition on Microwaves, Radio Communication and Electromagnetic Compatibility, pp. 154-157, Stuttgart, Germany, May 2001.




For more efficient use of the frequency spectrum, the future cellular communication systems have to ensure adaptive operation in code, frequency, time and space domains. To reduce production and operating costs, the future base stations have to be controlled by software and have to use the same hardware equipment in different frequency bands. This approach will be applied to UMTS, DCS1800 and DECT, requiring, however, an antenna covering all these frequency bands simultaneously. In a scattering environment, causing multipath fading, the performance of a base station can be improved by using diversity techniques or MIMO-systems, requiring more than one antenna at both transmitter and receiver. Two antennas with orthogonal polarizations can be replaced by one dual-polarized antenna, reducing the
complexity and production costs of the system. In this paper, we present a broadband ±45°-dual-polarized base station antenna with a -10 dB bandwidth of 28.7% and a gain of ≈18 dBi, covering the above mentioned frequency bands.


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