Looking to collaborate with Antenna + RF experts for design/build of 3 RFID UHF about 860-930 MHz Active Digital antennae systems with associated RF system. Each will support any RFID tag of the stated frequency range and the protocol. Use Miniature FR4 Chip Antenna Pulse ANT1204F005R0915A or similar as basis of design for reader/writer antenna system consisting of arrays of antenna elements + supporting RF components. If you strongly feel, a different technology will be better as a solution & economies, please advise. Need 3 software controlled solutions: 1. Fixed RFID reader without location precision 2. Mobile handheld reader with location precision 3. Fixed reader with location precision See below specs for location precision desired: 1. Fixed antenna -- 0.3 meters x,y,z 3D planer precision location of tag within at least 25 meter cone. Always on. 2. Mobile handheld antenna -- same as above but 0.1 meters x,y,z at about 20 meters distance. +- 10 deg angle to tag. On only when needed. Ways to have a solution for increasing the gain & power output. Also, get control of frequency (860MHZ to 930MHz by selecting the main and bandwidth for any country. See the frequency details in the worldwide map). Also control aperture, radiation pattern, polarizations, beam width, beam forming, steerability etc. via software only. Allow read these parameters & also diagnostics data via software. Get effects of Bi-directional Electronically Steerable Active Digital phased array (Linear/planer/frequency) to precisely pin-point x,y,z location (wrt center of antenna) of passive UHF RFID tags. You may suggest alternatives also if they will exceed the specifications given here. Identify the items you are unable to do. Else, we shall assume you will provide everything listed. More details in the attachment.