پیوندهای مفید
اخبار و اعلانات
آمار
| تعداد نشریات | 11 |
| تعداد شماره‌ها | 208 |
| تعداد مقالات | 2,090 |
| تعداد مشاهده مقاله | 2,829,924 |
| تعداد دریافت فایل اصل مقاله | 2,049,447 |
A Small Printed Quadrifilar Helical Antenna for BGAN/GPS Applications | ||
| Journal of Electrical and Computer Engineering Innovations (JECEI) | ||
| مقاله 3، دوره 5، شماره 1 - شماره پیاپی 9، فروردین 2017، صفحه 7-11 اصل مقاله (1.67 M) | ||
| نوع مقاله: Original Research Paper | ||
| شناسه دیجیتال (DOI): 10.22061/jecei.2017.623 | ||
| نویسنده | ||
| R. Kazemi* | ||
| Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, 5166616471 Iran | ||
| تاریخ دریافت: 31 خرداد 1396، تاریخ پذیرش: 31 خرداد 1396 | ||
| چکیده | ||
| This paper presents an element of a 2×2-element array antenna for Inmarsat BGAN/GPS applications. The element is an axial mode printed quadrifilar helical antenna that has been integrated with a compact feed network to provide sequential phase rotation for circular polarization (CP) radiation. The novel integrated lumped-element feed network is designed to provide a balanced RF power to the four helix arms with a 90° sequential phase difference between them. The design maintains a low cross polarization, and accordingly, a high quality of RHCP up to ±66° over the transmit frequency band of 1616 MHz to 1626 MHz. The gain in this frequency range is higher than 3.5 dB with a return loss better than 11 dB and a perfect circular polarization performance (axial ratio ~0 dB). The proposed antenna has small size, light weight, low cost, almost hemispherical radiation pattern and excellent circular polarization that can become a good candidate in satellite L1-band and BGAN satellite communications. | ||
| کلیدواژه‌ها | ||
| BGAN؛ GPS؛ Printed quadrifilar helical Antenna؛ Lumped-element integrated feed network؛ Right-hand circular polarization | ||
| مراجع | ||
|
[1] D.C. Morse and K. Griep, “Next generation FANS over Inmarsat Broadband Global Area Network (BGAN),” in Proc. 23rd DASC Conf., pp.11.B.4-1-13, 2004.
[2] M. Shaw, D.A. Turner, and K. Sandhoo, “Modernization of the global positioning system,” in Proc. Japanese Inst. of Navigation, GPS Symp., pp. 3–12, 2002.
[3] S. O'Kane and V. Fusco, “Circularly polarized curl antenna lens with tilt properties,” IEEE Trans. Ant. and Propag., vol. 57, no. 12, pp. 3043-3050, 2009.
[4] M. Amin, S. Ahmed, V. Fusco, H. Cantu, and T. Ratnarajah, “The effect of spatial axial ratio variation on QPSK modulation encoded using orthogonal circularly polarized signals,” in Proc. European Conf. on Wireless Technologies, pp. 62–65, 2007.
[5] W. Richards and Y. Lo, “Design and theory of circularly polarized microstrip antennas,” in Proc. Int. Symp. on Ant. and Propag. Soc., vo. 17, pp. 117 – 120, 1979.
[6] K.L. Chung and A.S. Mohan, “A systematic design method to obtain broadband characteristics for singly-fed electromagnetically coupled patch antennas for circular polarisation,” IEEE Trans. Ant. and Propag., vol. 51, pp. 3239– 3248, 2003.
[7] P. Xu, Z. Yan, X. Yang, T. Zhang, and G. Yuan,”Miniature folded printed quadrifilar helical antenna with integrated compact feeding network,” PIER lett., vol. 45, pp. 13-18, 2014.
[8] A. Takacs, H. Aubert, D. Belot, and H. Diez, “Miniaturization of compact quadrifilar helix antennas for telemetry, tracking and command applications,” PIERC, vol. 60, pp. 125-136, 2016.
[9] B. Slade, “The basics of quadrifilar helix antennas,” Orban Microwave Inc., 2015.
[10] S.G. Kim and K. Chang, “Ultrawide-band transitions and new microwave components using double-sided parallel-strip lines,” IEEE Trans. Microw. Theory Tech., vol. 52, no. 9, pp. 2148-2151, 2004. | ||
|
آمار تعداد مشاهده مقاله: 1,171 تعداد دریافت فایل اصل مقاله: 1,206 |
||