TY - JOUR
T1 - A low-cost electrical beam tilting base station antennas for wireless communication system
AU - Hwang, Ruey Bing
AU - Chang, Yin Jung
AU - Lai, Ming Iu
N1 - Funding Information:
Manuscript received May 20, 2002; revised November 23, 2002. This work was sponsored by the Ministry of Education under Contract 89-E-FA06-2-4. R. B. Hwang is with the Graduate Institute of Communication Engineering, National Chi Nan University, Nantou Hsien, 545, Taiwan, R.O.C. (e-mail: [email protected]). Y. J. Chang and M.-I. Lai are with the Microelectronics and Information Systems Research Center, National Chiao Tung University, Hsinchu, Taiwan, R.O.C. Digital Object Identifier 10.1109/TAP.2003.820963
PY - 2004/1
Y1 - 2004/1
N2 - A multifunctional feeding network is presented in this paper. It contains a one-to-eight Wilkinson-based power divider and eight microstrip lines backed with slot array. In addition, the moveable card printed with seven metal strips servs as a novel phase shifter. By dynamically moving the card, we can adjust the number and shielding area of the slot array and then alter the distribution of phase angle at each port of the feeding network accordingly. For example, in our application, we can have a progressive phase difference between the ports of feeding network and dynamically adjust them by changing the degree of perturbation on the slots array. The characteristic of beam tilting has been carefully examined by measuring the phase angle at each port and also by the far-field radiation pattern of the patch antenna array integrated with this novel phase shifter, in various perturbation conditions. The reliable, easily fabricated, and low-cost characteristics show its potential applications in the base-station antenna design.
AB - A multifunctional feeding network is presented in this paper. It contains a one-to-eight Wilkinson-based power divider and eight microstrip lines backed with slot array. In addition, the moveable card printed with seven metal strips servs as a novel phase shifter. By dynamically moving the card, we can adjust the number and shielding area of the slot array and then alter the distribution of phase angle at each port of the feeding network accordingly. For example, in our application, we can have a progressive phase difference between the ports of feeding network and dynamically adjust them by changing the degree of perturbation on the slots array. The characteristic of beam tilting has been carefully examined by measuring the phase angle at each port and also by the far-field radiation pattern of the patch antenna array integrated with this novel phase shifter, in various perturbation conditions. The reliable, easily fabricated, and low-cost characteristics show its potential applications in the base-station antenna design.
KW - Array antennas
KW - Low-cost electrical beam tilting
KW - Perturbation
KW - Phase shifter
UR - http://www.scopus.com/inward/record.url?scp=1542285861&partnerID=8YFLogxK
U2 - 10.1109/TAP.2003.820963
DO - 10.1109/TAP.2003.820963
M3 - 期刊論文
AN - SCOPUS:1542285861
SN - 0018-926X
VL - 52
SP - 115
EP - 121
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
IS - 1
ER -