en 5-Antenna Antenna Research Paper Research Paper <div style="text-align: justify;"><span style="font-family:Times New Roman;"><span style="font-size:14px;"><span style="color:#000000;">Linear antenna arrays are synthesized to have maximum directivity for a specified beamwidth. The directivity is maximized subject to a given beamwidth such as null to null or half power one. The excitation currents are obtained using a matrix equation obtained from the Lagrange multiplier method. The performance of the proposed method is studied by means of some examples. The synthesized arrays have the pre-specified beamwhidths and their directivity is close to the number of elements.</span></span></span></div> Antenna Array Synthesis, Maximum-Directivity Arrays, Specified Beamwidth Arrays. 27 32 http://ijeee.iust.ac.ir/browse.php?a_code=A-10-4-11&slc_lang=en&sid=1 M. Khalaj-Amirhosseini khalaja@iust.ac.ir 1800319475328460013412 1800319475328460013412 Yes School of Electrical Engineering, Iran University of Science and Technology (IUST), Tehran, Iran.