Abstract: In this paper, a 3D-printed dual-band reflect-transmit-array (RTA) antenna has been presented, which operates as a reflectarray (RA) in the 28 GHz band and as a transmitarray (TA) in the ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Since 3D printers debuted in the 1980s, the devices have been used ...

Abstract: In this paper, a 3D printed slotted waveguide antenna array is proposed for millimeter-wave communication systems at 28 GHz. The design method consists of the characterization of an isolated ...

3D bioprinting technology is bringing a new revolutionary wave to the healthcare industry. This technology combines biomaterials, bioinks, and 3D printing to develop specific structures that mimic ...

Editor’s Note: December 10, 2025: We’ve reviewed these selections to ensure they are available and competitively priced. To further update our coverage, with a focus on ease-of-use, we’ve called in ...

James has been writing about technology for years but has loved it since the early 90s. While his main areas of expertise are maker tools -- 3D printers, vinyl cutters, paper printers, and laser ...

More affordable than ever, 3D printers are booming for personal, professional, and educational use. We've been testing them for over a decade and are here to help you find the right option. Since 2004 ...

The rise of the consumer 3D printer has yielded amazing devices for designers, engineers, hobbyists, tinkerers, and schools alike. I've been reviewing 3D printers for PCMag since the first widely ...

Today's affordable 3D printers will surprise you: You can get a smooth-working machine with useful features once reserved for high-end models. Starting at just $250, these are the top budget ...

3D reconstruction is the process of generating a computer model of the 3D (3-dimensional) appearance of an object from a set of two-dimensional images. It is common in computer vision and medicine ...

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