Hi,
I am professional RF design engineer and researcher in field of RF & Microwave and has work experience in an active Radar Research Group involved in designing AESA and Digital Array Radar. I also have expertise on professional tools of antenna and electromagnetic structure design and analysis like CST Microwave Studio, HFSS, MATLAB, AWR and Keysight ADS. For PCB designing I have experience on Altium Designer. Moreover, I have hands on experience on antenna and RF circuit testing and measurements.
I did so many projects of the Microstrip Patch Antennas and Reconfigurable Antennas and along with this I also have done Metamaterials based reconfigurable antenna for Radar applications, RFIDs, PIFA Antenna for mobile communications, MIMO Antenna for 5G applications and Slot Antennas for RF Energy Harvesting.
I had go through your design requirements which are somewhat like "RF Front End" of radar or it can be a RFID like sensor for detection of object. I have work experience of similar tasks. Hope fully I will do your job on time in better way.