Sun, 27 Jul 2008 07:50:50 BST CiteULike: dcastro's beam http://www.citeulike.org/user/dcastro/tag/beam CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/dcastro/article/2801376 <i>Microwave Symposium Digest, 1998 IEEE MTT-S International, Vol. 3 (1998), pp. 1383-1386 vol.3.</i><br /><br />In this work, a beam-scanning array for antenna remoting via an optical link is presented. Optical control over the main beam is accomplished through the use of a photosensitive resonator. Experimental data shows a total scan angle up to 36° can be achieved with this optical technique All-optically controlled beam-scanning array for antenna remoting applications WR Deal T Jung MC Wu T Itoh doi:10.1109/MWSYM.1998.700632 Microwave Symposium Digest, 1998 IEEE MTT-S International, Vol. 3 (1998), pp. 1383-1386 vol.3. 2008-05-15T11:34:52-00:00 1998 Microwave Symposium Digest, 1998 IEEE MTT-S International 3 1383 1386 vol.3 antenna array beam optical http://www.citeulike.org/user/dcastro/article/2801352 <i>Microwave Symposium Digest, 1995., IEEE MTT-S International (1995), pp. 925-928 vol.2.</i><br /><br />An electronic beam-switching active antenna array is designed. The sum and difference patterns can be switched bi-directionally without additional switching devices. The required phase relationship is obtained through injection-locking. The transmitted power is combined quasi-optically. The measured patterns are in agreement with that of theory A 2×2 beam-switching active antenna array Siou Chew T Itoh doi:10.1109/MWSYM.1995.405897 Microwave Symposium Digest, 1995., IEEE MTT-S International (1995), pp. 925-928 vol.2. 2008-05-15T11:25:40-00:00 1995 Microwave Symposium Digest, 1995., IEEE MTT-S International 925 928 vol.2 active antenna array beam http://www.citeulike.org/user/dcastro/article/2774503 <i>Microwave Theory and Techniques, IEEE Transactions on, Vol. 46, No. 11. (1998), pp. 1920-1929.</i><br /><br />Applications of millimeter-wave radar, imaging, and communication technology requires cost-effective implementation of intelligent scanning antenna systems. Injection-locking and phase-locked-loop (PLL) techniques can be used to achieve synchronous operation of a number of antenna array elements, and allow for the manipulation of the phase distribution without additional phase-shifting circuitry, suggesting a potential for low-cost beam-scanning systems. This paper describes a number of techniques, with an assessment of some remaining technical challenges for practical implementation Injection- and phase-locking techniques for beam control [antenna arrays] RA York T Itoh doi:10.1109/22.734513 Microwave Theory and Techniques, IEEE Transactions on, Vol. 46, No. 11. (1998), pp. 1920-1929. 2008-05-09T06:40:42-00:00 1998 Microwave Theory and Techniques, IEEE Transactions on 46 11 1920 1929 active antenna array beam control pll http://www.citeulike.org/user/dcastro/article/2421597 <i>Vehicular Technology, IEEE Transactions on, Vol. 39, No. 1. (1990), pp. 56-67.</i><br /><br />The problem of meeting the proliferating demands for mobile telephony within the confinement of the limited radio spectrum allocated to these services is addressed. A multiple-beam adaptive base-station antenna is proposed as a major system component in an attempt to solve this problem. The approach is demonstrated by employing an antenna array capable of resolving the angular distribution of the mobile users as seen at the base-station site, and then using this information to direct beams toward either lone mobiles, or groupings of mobiles, for both transmit and receive modes of operation. The energy associated with each mobile is thus confined within the addressed volume, greatly reducing the amount of cochannel interference experienced from and by neighboring cochannel cells. To ascertain the benefits of such an antenna, the conventional and proposed antenna systems are modeled in a typical mobile radio environment. For a given performance criterion, the theoretical results indicate that a significant increase in the spectral efficiency, or capacity, of the network is obtainable with the proposed antenna The performance enhancement of multibeam adaptive base-station antennas for cellular land mobile radio systems SC Swales MA Beach DJ Edwards JP Mcgeehan doi:10.1109/25.54956 Vehicular Technology, IEEE Transactions on, Vol. 39, No. 1. (1990), pp. 56-67. 2008-02-24T13:46:17-00:00 1990 Vehicular Technology, IEEE Transactions on 39 1 56 67 adaptive antenna beam beamformer cellular mobile multi radio wireless