Wideband SIW Self-Diplexing antenna with simultaneous control of bandwidth and band position
| Autor: | Santanu Dwari, Kundan Kumar, Shruti Priya, Mrinal Kanti Mandal |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Physics
Waveguide (electromagnetism) Acoustics Bandwidth (signal processing) 020206 networking & telecommunications 02 engineering and technology Impedance parameters 03 medical and health sciences Resonator 0302 clinical medicine 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Antenna (radio) Wideband 030217 neurology & neurosurgery Microwave Ground plane |
| Zdroj: | AEU - International Journal of Electronics and Communications. 138:153877 |
| ISSN: | 1434-8411 |
| Popis: | This paper presents a wideband self-diplexing antenna in substrate integrated waveguide (SIW) technology. The problem of narrow radiating bands of traditional self-diplexing antennas is first solved by introducing stepped-impedance resonant slots on top of an SIW cavity. Radiation in each band is obtained from two modes of the resonator, which helps in bandwidth improvement. Bandwidths are controllable by the stepped impedance parameters. Good isolation between the ports enables almost independent control of the band position. Further, a third non-radiating slot is introduced in the middle of the structure, which improves input matching at both the ports. A prototype antenna is fabricated for X-band wireless systems. The measured 10 dB bandwidths are 12.65% (9.25–10.5 GHz) and 17.24% (10.6–12.6 GHz) with the boresight gain ranging over 7–9 dBi and 8.4–10.6 dBi, respectively. Even though the band separation is just 100 MHz, measured isolation is at least 20.5 dB. Isolation can be further improved for wider band separation. The present antenna can be directly integrated with microwave circuits because it does not use any ground plane perturbation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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