Compact Broadband Electromagnetically Coupled Stacked Patch Monopulse Antenna Array at X-Band
| Autor: | Dovari Nagaraju, Yogesh Verma, Bivin G. Mathew |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Physics
business.industry 020208 electrical & electronic engineering Bandwidth (signal processing) X band 020206 networking & telecommunications 02 engineering and technology Microstrip Beamwidth Antenna array Microstrip antenna Optics Monopulse radar 0202 electrical engineering electronic engineering information engineering Standing wave ratio business |
| Zdroj: | 2021 15th European Conference on Antennas and Propagation (EuCAP). |
| DOI: | 10.23919/eucap51087.2021.9411247 |
| Popis: | This paper presents a compact, broadband, electromagnetically coupled stacked patch monopulse antenna array at X-band. The antenna element consists of a microstrip line, radiating patch, and parasitic patch in three different layers without air-gap. The antenna array is designed within the diameter of 9 λ with the corporate feed network, which aids the sidelobe level of < −24 dB. The monopulse comparator is designed with a combination of rat-race and double section branch-line hybrids. The impedance bandwidth of the antenna array is 10 % for VSWR < 2. The measured results show a sum pattern peak gain of 24.5 dBi, beamwidth is about 8 deg. in both E- and H-planes. The difference pattern shows a null-depth of better than −30 dB over the bandwidth with a maximum null-depth of about −48 dB. |
| Databáze: | OpenAIRE |
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