Vol. 22
Latest Volume
All Volumes
PIERC 127 [2022] PIERC 126 [2022] PIERC 125 [2022] PIERC 124 [2022] PIERC 123 [2022] PIERC 122 [2022] PIERC 121 [2022] PIERC 120 [2022] PIERC 119 [2022] PIERC 118 [2022] PIERC 117 [2021] PIERC 116 [2021] PIERC 115 [2021] PIERC 114 [2021] PIERC 113 [2021] PIERC 112 [2021] PIERC 111 [2021] PIERC 110 [2021] PIERC 109 [2021] PIERC 108 [2021] PIERC 107 [2021] PIERC 106 [2020] PIERC 105 [2020] PIERC 104 [2020] PIERC 103 [2020] PIERC 102 [2020] PIERC 101 [2020] PIERC 100 [2020] PIERC 99 [2020] PIERC 98 [2020] PIERC 97 [2019] PIERC 96 [2019] PIERC 95 [2019] PIERC 94 [2019] PIERC 93 [2019] PIERC 92 [2019] PIERC 91 [2019] PIERC 90 [2019] PIERC 89 [2019] PIERC 88 [2018] PIERC 87 [2018] PIERC 86 [2018] PIERC 85 [2018] PIERC 84 [2018] PIERC 83 [2018] PIERC 82 [2018] PIERC 81 [2018] PIERC 80 [2018] PIERC 79 [2017] PIERC 78 [2017] PIERC 77 [2017] PIERC 76 [2017] PIERC 75 [2017] PIERC 74 [2017] PIERC 73 [2017] PIERC 72 [2017] PIERC 71 [2017] PIERC 70 [2016] PIERC 69 [2016] PIERC 68 [2016] PIERC 67 [2016] PIERC 66 [2016] PIERC 65 [2016] PIERC 64 [2016] PIERC 63 [2016] PIERC 62 [2016] PIERC 61 [2016] PIERC 60 [2015] PIERC 59 [2015] PIERC 58 [2015] PIERC 57 [2015] PIERC 56 [2015] PIERC 55 [2014] PIERC 54 [2014] PIERC 53 [2014] PIERC 52 [2014] PIERC 51 [2014] PIERC 50 [2014] PIERC 49 [2014] PIERC 48 [2014] PIERC 47 [2014] PIERC 46 [2014] PIERC 45 [2013] PIERC 44 [2013] PIERC 43 [2013] PIERC 42 [2013] PIERC 41 [2013] PIERC 40 [2013] PIERC 39 [2013] PIERC 38 [2013] PIERC 37 [2013] PIERC 36 [2013] PIERC 35 [2013] PIERC 34 [2013] PIERC 33 [2012] PIERC 32 [2012] PIERC 31 [2012] PIERC 30 [2012] PIERC 29 [2012] PIERC 28 [2012] PIERC 27 [2012] PIERC 26 [2012] PIERC 25 [2012] PIERC 24 [2011] PIERC 23 [2011] PIERC 22 [2011] PIERC 21 [2011] PIERC 20 [2011] PIERC 19 [2011] PIERC 18 [2011] PIERC 17 [2010] PIERC 16 [2010] PIERC 15 [2010] PIERC 14 [2010] PIERC 13 [2010] PIERC 12 [2010] PIERC 11 [2009] PIERC 10 [2009] PIERC 9 [2009] PIERC 8 [2009] PIERC 7 [2009] PIERC 6 [2009] PIERC 5 [2008] PIERC 4 [2008] PIERC 3 [2008] PIERC 2 [2008] PIERC 1 [2008]
2011-05-27
A Compact Size and Small Frequency Ratio CPW-Fed Circular Slot Antenna for GPS/WLAN Dual-Band and Circular Polarizations
By
Progress In Electromagnetics Research C, Vol. 22, 1-9, 2011
Abstract
This paper presents a novel dual-band circularly polarized CPW-fed circular slot antenna with two open-ground rings. The proposed antenna is constructed with two opened-ground rings facing in opposite directions and embedded in the circular slot, and the enhanced feed strip of CPW. By way of adjusting the relevant parameters, we can obtain the dual-band at 1.57 GHz and 2.46 GHz respectively. A smaller frequency ratio of 1.56 is presented. The measured -10 dB return loss impedance bandwidth are 380 MHz (24.68%) for 1.57 GHz band and 210 MHz (8.33%) for 2.46 GHz band. The measured -3 dB axial ratio bandwidth for 1.57 GHz and 2.46 GHz bands are 13.38% and 8.13%, the polarization of radiation patterns are RHCP and LHCP for each band and the antenna gain are 3.72 and 3.21 dBic respectively.
Citation
Chia-Yen Wei Ji-Chyun Liu Tian-Fu Hung Sheau-Shong Bor Chi Chiang Chen , "A Compact Size and Small Frequency Ratio CPW-Fed Circular Slot Antenna for GPS/WLAN Dual-Band and Circular Polarizations," Progress In Electromagnetics Research C, Vol. 22, 1-9, 2011.
doi:10.2528/PIERC11050410
http://www.jpier.org/PIERC/pier.php?paper=11050410
References

1. Chen, H. D. and H. T. Chen, "A CPW-fed dual-frequency monopole antenna," IEEE Trans. Antennas Propag., Vol. 52, No. 4, 978-982, Apr. 2004.
doi:10.1109/TAP.2004.825620

2. Kim, T. H. and D. C. Park, "CPW-fed compact monopole antenna for dual-band WLAN applications," Elect. Lett., Vol. 41, No. 6, 291-293, Mar. 2005.
doi:10.1049/el:20058315

3. Liu, W. C. and C. F. Hsu, "Dual-band CPW-fed Y-shaped monopole antenna for PCS/WLAN application," Elect. Lett., Vol. 41, No. 7, 390-391, Mar. 2005.
doi:10.1049/el:20057887

4. Chen, J. S., "Dual-frequency annular-ring slot antennas fed by CPW feed and microstrip line feed," IEEE Trans. Antennas Propag., Vol. 53, No. 1, 569-571, Jan. 2005.
doi:10.1109/TAP.2004.838799

5. Chang, D. C., B. H. Zeng, and C. Liu, "CPW-fed circular fractal slot antenna design for dual-band applications," IEEE Trans. Antennas Propag., Vol. 56, No. 12, 3630-3636, Dec. 2008.
doi:10.1109/TAP.2008.2007279

6. Jou, C. F., J. W. Wu, and C. J. Wang, "Novel broadband monopole antennas with dual-band circular polarization," IEEE Trans. Antennas Propag., Vol. 57, No. 4, 1027-1034, Apr. 2009.
doi:10.1109/TAP.2009.2015827

7. Chen, C. H. and E. K. N. Yung, "Dual-band dual-sense circularly-polarized CPW-fed slot antenna with two spiral slots loaded," IEEE Trans. Antennas Propag., Vol. 57, No. 6, 1829-1833, Jun. 2009.
doi:10.1109/TAP.2009.2019990

8. Chen, C. H. and E. K. N. Yung, "Dual-band circularly-polarized CPW-fed slot antenna with a small frequency ratio and wide bandwidths ," IEEE Trans. Antennas Propag., Vol. 59, No. 4, 1379-1384, Apr. 2011.
doi:10.1109/TAP.2011.2109347

9. Sayem, A. T. M. and M. Ali, "A dual-band Hilbert slot antenna for GPS and Bluetooth application," IEEE Antennas and Propagation Society International Symposium, Vol. 4B, 44-47, 2005.

10. HFSS version 11.0, Ansoft Software Inc., 2007.