Hi , 4 years of experience in microwave systems may be enough to meet your requirements, I am a communications engineer with 7 years of experience, I worked three years as a transmission engineer, then I worked 4 years in the field of microwave systems, I have designed a lot of antennas and microstripe-antennas and also designed a lot of microwave components as Couplers, Combiners , power dividers and matching circuits ,Some of what I do daily, I check imported WiMAX devices and make sure it are in compliance with specifications and that it are not providing more power than the limit. If you like to deal with me, I will send you some forms as per your request