Abstract
This letter proposes a 3D-printed subterahertz fully metallic frequency-scanning (FS) periodic leaky-wave antenna (LWA) based on a spoof surface plasmon polariton (SSPP) transmission line. Glide symmetry is introduced into the conventional domino-Type SSPP transmission line to increase dispersion, thereby enabling a higher scanning rate. An asymmetric periodic modulation structure is designed to excite leaky-wave radiation while suppressing the open stopband effect without extra elements. A gap waveguide (GWG) is utilized as the feeding structure, which mitigates energy leakage from potential assembly gaps and significantly reduces fabrication difficulty and assembly complexity. The SSPPs and GWG structures are monolithically fabricated using high-precision 3-D printing and surface-metallized via magnetron sputtering of gold. Experimental measurements of a prototype demonstrate continuous beam scanning from-29to +49$ within the frequency range from 180 to 220 GHz, achieving a scanning rate of 3.9/%BW. The peak gain varies between 11.13 and 16.53 dBi. This work provides a cost-effective, high-performance, and feasible solution for metallic FS LWAs, with promising applications in terahertz imaging and radar systems.
| Original language | English |
|---|---|
| Pages (from-to) | 601-606 |
| Number of pages | 6 |
| Journal | IEEE Transactions on Terahertz Science and Technology |
| Volume | 16 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 1 May 2026 |
| Externally published | Yes |
Keywords
- Frequency scanning (FS)
- fully metallic spoof surface plasmon polaritons (SSPPs)
- high scanning rate
- leaky-wave antenna (LWA)
- subterahertz (sub-THz)
Fingerprint
Dive into the research topics of '3D-Printed Subterahertz High-Scanning-Rate Leaky-Wave Antenna Based on Metallic Spoof Surface Plasmon Polaritons'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver