Improved splash-plate feed parabolic reflector antenna for Ka-Band VSAT applications

Asci, Yavuz; Curuk, Eren; Yeğin, Korkut; Özdemir, Caner

doi:10.1109/eumc.2016.7824585

Cited by 9 publications

(5 citation statements)

References 9 publications

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“…5 Reflector antennas are generally preferred for radio link systems due to their high directivity and excellent radiation characteristics. 6 However, they are large in size due to their focal length, the use of feeds, and the many support elements. Planar antennas are preferred in mmWave applications because of their compact size and volume.…”

Section: Introductionmentioning

confidence: 99%

“…In 2016, various countries announced 5G bands such as EC 24.5‒27.5 GHz, US 24.25‒28.35 GHz, Canada 26.5‒28.35 GHz, MIIT 24.75‒27.5 GHz, South Korea 25.7‒29.5 GHz, Japan 26.6‒29.5 GHz, India 24.5‒29.5 GHz, Australia 24.25‒29.5 GHz 5 . Reflector antennas are generally preferred for radio link systems due to their high directivity and excellent radiation characteristics 6 . However, they are large in size due to their focal length, the use of feeds, and the many support elements.…”

Section: Introductionmentioning

confidence: 99%

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Broadband, high gain 2 × 2 subarray and 2 × 8 cavity‐backed antenna arrays for 5G mmWave applications

Asci

2023

Micro & Optical Tech Letters

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In this study, linearly polarized 2 × 2 subarray and 2 × 8 element cavity‐backed antennas are proposed for 5G millimeter‐wave (mmWave) applications. Initially, the 2 × 2 subarray is designed, manufactured, and tested. According to the measured results, the 2 × 2 subarray has a wide fractional bandwidth (FBW) of 24.7% (|S11| < −10 dB, 22.3‒28.6 GHz) which covers the main spectrum allocations for the 5G cellular network. A broadband 1 × 4 corporate feed network is designed, which is challenging and crucial, to form 2 × 8 antenna array. The experimental results show that the final 2 × 8 antenna array has a wide FBW of 23% (|S11| < −10 dB, 22.3‒28 GHz), with a boresight gain of 20.5 dBi. Throughout the operating band, a stable gain of 19.5 ± 1 dBi is achieved. The 2 × 8 antenna array has good and stable radiation characteristics; SLLs are less than −13 dB and XPol is better than −20 dB for both E‐ and H‐planes across the entire operating frequency. Stubs are added between adjacent subarrays in the E‐plane to suppress mutual coupling and to improve gain of 2 × 8 antenna, which results in broadband impedance characteristics. The size of the 2 × 8 antenna array is 6.3λο × 8.1λο × 1.3λο, where λο is the free space wavelength at 25 GHz. These results show that the proposed antenna has potential for 5G millimeter‐wave applications requiring broadband and high gain.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Broadband, high gain 2 × 2 subarray and 2 × 8 cavity‐backed antenna arrays for 5G mmWave applications

Asci

2023

Micro & Optical Tech Letters

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“…The microstrip patch antenna is one of the most used antennas nowadays due to its excellent properties such as having a low profile and lightweight structure, having low cost, ease of fabrication and ease of integration with circuits [1]. A compact and lightweight antenna is always opted for VSAT, very small aperture terminal [2,3], satellite applications so that it can be easily carried around or accommodated on moving stations, especially for military communication services [4,5].…”

Section: Introductionmentioning

confidence: 99%

DESIGN AND ANALYSIS OF A MICROSTRIP PATCH ANTENNA AT 7.5 GHz FOR X-BAND VSAT APPLICATION

Mohamad¹,

Muzamil²,

Malek³

et al. 2022

IIUMEJ

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In this paper, a microstrip patch antenna is designed to be used for X-band VSAT application at 7.5 GHz. The antenna is proposed to replace the massive and commonly used parabolic reflector antennas (46.0 inch × 29.3 inch × 13.5 inch (116.84 cm × 74.42 cm × 34.29 cm) with weight of 66.2 kg) in terms of portability due to its compact and lightweight features, with overall dimensions of 19.00 mm × 30.55 mm. The 7.5 GHz frequency is chosen based on the X-band frequency used in Malaysia, as reported by STRIDE. The microstrip patch antenna is first designed and simulated using CST Microwave Studio (CST MWS) and exhibits a good return loss (S11) of -42.09 dB, a bandwidth of 399 MHz, directivity of 7.63 dB and gain of 7.18 dB. The antenna is then fabricated using RT/duroid ® High Frequency 5880 substrate with a dielectric constant of ?r = 2.2, loss tangent of ? = 0.0009 and thickness of t = 1.574 mm. Next, the return loss and radiation pattern measurements are carried out to confirm the simulated results. The measurement of the antenna prototype provides a return loss S11 of -30.53 dB, bandwidth of 455 MHz, directivity of 5.51 dB and gain of 3.88 dB. ABSTRAK: Di dalam kajian ini, antena jalurmikro dicadangkan untuk tujuan aplikasi jalur-X VSAT pada 7.5 GHz. Antena jalurmikro ini dicadangkan untuk menggantikan antena reflektor parabola yang besar dan biasa digunakan (46.0 inci × 29.3 inci × 13.5 inci (116.84cm × 74.42cm × 34.29cm) dengan berat 66.2kg), kerana cirinya yang mudah alih dengan fizikalnya yang kecil dan ringan, dan dimensi keseluruhan 19.00 mm × 30.55 mm. Frekuensi 7.5 GHz dipilih berdasarkan frekuensi jalur-X yang digunakan di Malaysia, seperti yang dilaporkan oleh STRIDE. Antena jalurmikro ini direka dan disimulasi menggunakan perisian CST Studio Gelombang Mikro (CST MWS) dan menghasilkan kehilangan pulangan yang baik S11 -42.09 dB, lebar jalur 399 MHz, keterarahan 7.63 dB dan gandaan 7.18 dB. Antena jalurmikro ini kemudiannya direalisasikan dengan menggunakan substrat RT / duroid ® Frekuensi Tinggi 5880 dengan pemalar dielektrik ?r = 2.2, tangen kehilangan ? = 0.0009 dan ketebalan t = 1.574 mm. Seterusnya, pengukuran kehilangan pulangan dan corak radiasi dilakukan untuk mengesahkan keputusan simulasi. Pengukuran prototaip antena jalurmikro menunjukkan kehilangan pulangan S11 -30.53 dB, lebar jalur 455 MHz, keterarahan 5.51 dB dan gandaan 3.88 dB.

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“…Splash plate feed, which traces back to World War II, has not been used widely for the high VSWR [31]. Since the 1980s, antenna with splash plate feed has been researched by few papers, which present the power distribution control and equiphase on the main reflector aperture through dielectric materials and subreflector forming, while the main attention is payed on subreflector forming to improve performance [32][33][34][35][36]. Since the antenna with splash plate feed does not need the support for subreflector, it can gain higher efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…Since the antenna with splash plate feed does not need the support for subreflector, it can gain higher efficiency. However, the problem caused by feed shelter [32][33][34][35][36] still exists.…”

Section: Introductionmentioning

confidence: 99%

A Ring-Focus Antenna with Splash Plate in Ka-Band

Zhao

Bai

et al. 2018

International Journal of Antennas and Propagation

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A design for Ka-band satellite communication antenna in earth station is introduced. This kind of antenna uses splash plate feed based on ring-focus antenna. The theory of the new splash plate feed design is presented and the relative equations are derived. The measured antenna parameters, VSWR, and patterns are highly consistent with the simulated results, which demonstrates the success of the design for such kind of antenna that can be effectively used in Ka-band applications.

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Improved splash-plate feed parabolic reflector antenna for Ka-Band VSAT applications

Cited by 9 publications

References 9 publications

Broadband, high gain 2 × 2 subarray and 2 × 8 cavity‐backed antenna arrays for 5G mmWave applications

Broadband, high gain 2 × 2 subarray and 2 × 8 cavity‐backed antenna arrays for 5G mmWave applications

DESIGN AND ANALYSIS OF A MICROSTRIP PATCH ANTENNA AT 7.5 GHz FOR X-BAND VSAT APPLICATION

A Ring-Focus Antenna with Splash Plate in Ka-Band

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