2.45 GHz and 5.8 GHz Compact Dual-Band Circularly Polarized Patch Antenna

Ooi, Thean Song; Rahim, Sharul Kamal Abdul; Koh, BoonPing

doi:10.1163/156939310792149713

Cited by 37 publications

(26 citation statements)

References 8 publications

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“…With the rapid development of wireless communication systems, multiple frequency bands antennas [6][7][8][9][10] have been developed to meet increasing demand for a modern portable wireless communication standard in a single system. In particular, various types of designs related to multi-band CP antennas have been reported [11][12][13][14][15][16][17][18][19][20][21][22]. Singlelayer designs using square and circular patches with several slits have been demonstrated in Li et al [11].…”

Section: Introductionmentioning

confidence: 99%

Tri-band circularly polarized annular slot antenna for GPS and CNSS applications

Wang

Guo

Sheng

2012

Journal of Electromagnetic Waves and Applications

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A novel single-feed tri-band circularly polarized (CP) annular slot antenna is presented. The antenna structure is composed of two nonconcentric annular slots that are fed by an Lshaped series step impedance microstrip line configuration. The proposed antenna is designed to operate at the L 1 and L 2 bands of the global positioning system and the operating band of the compass navigation satellite system. Compared to the most of the previously reported tri-band CP antenna structure, the proposed antenna has low profile, compact size, and easy fabrication on the single-layer PCB. The measured results show that the impedance bandwidths are good for all bands. The axial ratio bandwidth and radiation patterns are also measured at the three resonant frequencies. The proposed compact tri-band CP antenna design is suitable for mounting onto the mobile communication devices and portable positioning systems. IntroductionCircularly polarized (CP) antennas have received much attention for the applications of the wireless communication services such as global and positioning system (GPS) and other wireless communications and sensor systems, due to the advantages including immunity to Faraday rotation, mitigation of multipath propagation effects, and reduced antenna orientation constraints. A number of CP antennas have been designed and published [1][2][3][4][5]. For more demanding applications, such as surveying systems employing differential GPS, an antenna covering both L 1 and L 2 bands is useful. In China, compass navigation satellite system (CNSS), or named "BeiDou," has provided navigation and positioning services compatible with GPS. Thus, a multi-band CP antenna which can operate both at GPS and CNSS frequency bands is required. With the rapid development of wireless communication systems, multiple frequency bands antennas [6-10] have been developed to meet increasing demand for a modern portable wireless communication standard in a single system. In particular, various types of designs related to multi-band CP antennas have been reported [11][12][13][14][15][16][17][18][19][20][21][22]. Singlelayer designs using square and circular patches with several slits have been demonstrated in Li et al. [11]. Stacked-patch multi-band CP antennas have also been introduced [12-17]. A dual-band proximity-fed stacked patch antenna presented in [15] could cover L 1 =L 2 =L 5 GPS band, but two L-shaped probes and a 0°-90°hybrid were employed to ensure RHCP

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Section: Introductionmentioning

confidence: 99%

Tri-band circularly polarized annular slot antenna for GPS and CNSS applications

Wang

Guo

Sheng

2012

Journal of Electromagnetic Waves and Applications

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“…Many researchers have developed RFID reader antennas operating in the UHF and ISM frequency band such as a microstrip array antenna with coplanar parasitic elements [2], double-layer microstrip antenna array [3], a beam scanning phased array for UHF RFID readers with circularly polarized patches [4], a miniaturized printed dipole antenna with V-shaped ground [5], design optimization of a bow-tie antenna [6], and a compact folded printed dipole antenna [7]. Most of reader antennas use circular polarization [8][9][10][11][12][13][14][15][16][17]. In practice, a CP antenna is highly desired to ensure tag visibility regardless of tag orientation.…”

Section: Introductionmentioning

confidence: 99%

Design of the Planar Cross Dipole Reader Antenna for UHF RFID Systems

Lee

Jung

2012

Journal of Electromagnetic Waves and Applications

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The planar dipole reader antenna using a dual polarization, which consists of two dipole radiating patches and Wilkinson power divider, is presented. The electric cross dipole is added to generate a symmetric radiation pattern and to compensate the high back radiation due to the shortened patches. From experimental results, the measured impedance bandwidth of the antenna (defined by −10 dB return loss) is 30 MHz (907 MHz-954 MHz, Korea standard = 917 MHz-923.5 MHz). Simulated isolation between the two input ports is over 35 dB. The measured gain of the proposed antenna is stable with frequency. The average gain is about 6.3 dBi.

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“…As the interest of CP antenna design is increasing, the need for small antennas with dual-band CP behavior has greatly increased. A lot of work has been reported on modelling the dual-band CP antennas [1][2][3][4][5] in the open literature. Among various forms of the dual-band CP antennas, slot antennas have been concerned widely due to its well-known characteristics such as low profile, large impedance bandwidth, simple structure, and easy integration with other RF frontend circuits in a PCB.…”

Section: Introductionmentioning

confidence: 99%

Dual-Band Circularly Polarized Slot Antenna for Wimax/Wlan Application

Li¹,

Jiao²,

Liu³

2012

PIER Letters

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Abstract-A new antenna with dual-band circular polarization for the reception of WiMAX and WLAN is presented in this article. The circular polarization is achieved by a symmetrical U-slot together with an L-slot. The width of the signal strip is narrowed at the end of the feed point to widen the 3-dB axial ratio (AR) bandwidth and create a good impedance matching for the proposed antenna. A parametric study is conducted using a commercial simulation software based on the method of moments, and the antenna prototype is constructed and measured for providing the simulation validation. Experimental results show that the measured AR bandwidths are about 16.6% and 16.2% with respect to the center frequency at 3.5 GHz and 5.3 GHz. The radiation characteristics of the proposed antenna are also presented.

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2.45 GHz and 5.8 GHz Compact Dual-Band Circularly Polarized Patch Antenna

Cited by 37 publications

References 8 publications

Tri-band circularly polarized annular slot antenna for GPS and CNSS applications

Tri-band circularly polarized annular slot antenna for GPS and CNSS applications

Design of the Planar Cross Dipole Reader Antenna for UHF RFID Systems

Dual-Band Circularly Polarized Slot Antenna for Wimax/Wlan Application

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