Smart antenna application on vehicles with low profile array antennas

The application of smart or intelligent antennas at base stations of cellular radio systems has been proven to be a successful way to enhance the performance and the channel capacity of personal communication systems. This paper presents a new type of mobile phone car antenna, which is implemented as a phased array of multiple short antennas with optimum omnidirectional patterns. In addition, it allows adaptive beam steering as well. Optimum reception can be achieved by using the same set of antennas in diversity mode. In spite of the comparatively low technical effort and the small dimensions this highly effective antenna configuration opens the possibility for smart antenna application in vehicles as well.

[1]  K. Ogawa,et al.  An analysis of the performance of a handset diversity antenna influenced by head, hand and shoulder effects at 900 MHz , 1999 .

[2]  L. Reiter,et al.  Antenna-Diversity Techniques in Cars for FM-Radio, TV and Cellular Phone , 1999, 1999 29th European Microwave Conference.

[3]  Koichi Ogawa,et al.  An analysis of the performance of a handset diversity antenna influenced by head, hand and shoulder effects at 900 MHz , 1999, IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010).

[4]  J. Hopf,et al.  Optimization of the antenna-diversity-effectiveness of complex FM-car-antenna systems , 1999, IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010).

[5]  J. S. Hammerschmidt,et al.  Comparison of single antenna, selection combining, and optimum combining reception at the vehicle , 1999, Gateway to 21st Century Communications Village. VTC 1999-Fall. IEEE VTS 50th Vehicular Technology Conference (Cat. No.99CH36324).

[6]  L.M. Reiter,et al.  Design method for antenna arrays on cars with electrically short elements under incorporation of the radiation properties of the car body , 1997, IEEE Antennas and Propagation Society International Symposium 1997. Digest.