National University of Sciences and Technology, Karachi, Pakistan.
PLoS One. 2024 Feb 8;19(2):e0297957. doi: 10.1371/journal.pone.0297957. eCollection 2024.
In this reported work a single feed, miniaturized, dual layer, and low profile antenna is presented for 1.575GHz frequency band. The proposed antenna offers high gain, lower noise bandwidth, with better sensitivity and range. The ground choke technique is used for back lobe suppression. The prototype is fabricated on FR 4 substrate using manual fabrication technique. This offers an inexpensive and readily available fabrication. Therefore, fabricated antenna is small size, low cost, easily fabricated and tested for satellite communication. The antenna comprises of two layers, containing a patch radiator and a Metasurface layer with 3x3 rectangular ring resonators. The layers are separated using foam with a 12mm width. The proposed prototype is radiating at 1.575GHz and 2.33GHz with an overall dimension of 85.6 x 68.4 x 15.204 mm. The developed antenna provides a gain of 5.9 dBi. The simulated results are verified using VNA and anechoic chamber testing. Moreover, the developed antenna has been successfully tested for L-Band Satellite communication in real time scenario without any LNA. Higher Gain due to Metasurface increase the efficiency of the system. The promising results indicate the aptness of the developed antenna for real-world applications of L-Band and S-Band.
在这项报道的工作中，提出了一种用于 1.575GHz 频带的单馈、小型化、双层和低剖面天线。所提出的天线具有高增益、较低噪声带宽、更好的灵敏度和范围。采用接地扼流圈技术抑制后瓣。原型是使用手动制造技术在 FR4 基板上制造的。这提供了一种廉价且易于获得的制造方法。因此，制造的天线尺寸小、成本低、易于制造和测试，可用于卫星通信。该天线由两层组成，包含一个贴片辐射器和一个具有 3x3 矩形环形谐振器的超表面层。层之间使用宽度为 12mm 的泡沫隔开。所提出的原型在 1.575GHz 和 2.33GHz 处辐射，整体尺寸为 85.6 x 68.4 x 15.204mm。开发的天线提供 5.9dBi 的增益。使用 VNA 和消声室测试验证了模拟结果。此外，该开发的天线已成功在实时场景中用于 L 波段卫星通信，无需任何 LNA。由于超表面增加了增益，因此提高了系统的效率。有前途的结果表明，所开发的天线适用于 L 波段和 S 波段的实际应用。
