A Wideband Slotted Spherical Waveguide Antenna Based on Multi-Mode Concept
| Autor: | Tao Yuan, Shao-Hua Guo, Xiaokun Bi, Yu-Jian Zhu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Computer Networks and Communications
slotted waveguide antenna Acoustics Shell (structure) lcsh:TK7800-8360 multi-mode concept 02 engineering and technology Radiation law.invention law 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Wideband Stereolithography Computer Science::Information Theory Physics lcsh:Electronics 020208 electrical & electronic engineering Mode (statistics) 020206 networking & telecommunications three-dimensional (3D) printing Hardware and Architecture Control and Systems Engineering Signal Processing Radiator (engine cooling) Antenna (radio) wideband Slotted waveguide |
| Zdroj: | Electronics Volume 9 Issue 10 Electronics, Vol 9, Iss 1656, p 1656 (2020) |
| ISSN: | 2079-9292 |
| DOI: | 10.3390/electronics9101656 |
| Popis: | A wideband slotted spherical waveguide antenna based on the multi-mode concept is presented. The proposed design starts from a metallized spherical cavity fed by a rectangular waveguide. Then, two groups of slots are symmetrically cut on the shell. By suitably choosing the slot dimensions and locations, four radiation modes can be excited in a single radiator and merged with each other, resulting in a wideband radiation characteristic. To verify this, a prototype is designed and fabricated using stereolithography apparatus to achieve a light weight. As the measured fractional bandwidth (FBW) of the proposed antenna can be increased to 70.1% while maintaining stable radiation patterns and high gain, a simple and effective design of wideband slotted waveguide antennas with good radiation characteristics can be validated. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|