If you're driving in Indiana, you're likely to encounter a roundabout. How do roundabouts work?

If you're new to Indiana or just passing through, you need to know how to navigate a roundabout because we have a lot of them here. Here's what drivers need to know.
IEEE

Compact 2-D Passive Beam-Scanning Multibeam Antenna Based on Rotman Lens and Mechanical Sweeping Phase Gradient Metasurface

Abstract: A compact multibeam antenna is proposed with passive 2-D beam scanning capability. The antenna is composed of a Rotman lens beamformer, a slotted waveguide array (SWA), and a mechanical ...
IEEE

Fixed-Frequency 2-D Wide-Angle Scanning Leaky-Wave Array With Reconfigurable Probe-Fed Magneto-Electric Dipole

Abstract: A new 2-D scanning leaky-wave antenna (LWA) design is proposed, with a scanning range larger than competitors. It consists of a 1-bit reconfigurable magneto-electric (ME) dipole array and a ...