Dual Channels for Polarization-Insensitive Microwave Energy and Data Co-Delivery Through Shared Aperture of Dual-Linearly Polarized Antennas

To guarantee aligned polarization between transmitting (TX) and receiving (RX) antennas, dual isolated channels can be established through shared aperture of TX and RX dual- linearly polarized (DLP) antennas. Under excitations of microwave energy and data individually at vertically and horizontally polarized (VP/ HP) ports of TX DLP antenna, it enables both balanced RF-to-dc rectification and differential data demodulation insensitive to tilts of RX DLP antenna polarization with employment of a hybrid coupler and two identical sub-rectifiers. All circuits are fabricated on a 20-mil lowloss substrate, Rogers RO4350B (tan delta = 0.0037 and epsilon r = 3.66). Selected polarization tilts (theta, 0 similar to 90 degrees, Delta theta = 30 degrees) are conducted as experimental measurements, which along with theory analysis validate its robustness of dual channels for polarizationinsensitive microwave energy and data co-delivery.