Abstract: This paper presents the design of a microstrip line-fed substrate-integrated waveguide (SIW) ring antenna designed to excite a sixth-order circularly polarized conical radiation pattern.

This project demonstrates the Adapter Design Pattern in Python by building a simple payment system. The Adapter pattern allows classes with incompatible interfaces to work together. In this example: ...

Scientists are exploring a new class of origami structures that could help design and build different shapes for use in space. These structures are expected to be even more compact and reliable.

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