Dual-band circularly polarized monopole antenna

Wu, Jin‐Wei; Jou, Christina F.; Wang, Chien-Jen

doi:10.1109/iwat.2009.4906867

Cited by 5 publications

(3 citation statements)

References 11 publications

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“…For compact operation, the longer arm of the F-shaped monopole strip is meandered to obtain smaller dimension, which is used to generate the fundamental resonant mode at approximately 2450 MHz. The longer strip-sleeve of L15 × W5 is introduced to disturb the surface current on the ground plane, which is different from the CP design using the L-shaped slit inset into the ground plane [2, 4, 5]. Meanwhile, the right-hand circular polarization (RHCP) can be obtained by exciting the two orthogonal linearly polarized modes with a 90° phase offset, which is due to this proposed longer strip-sleeve perpendicular to the x -directional F-shaped monopole strip.…”

Section: Antenna Designmentioning

confidence: 99%

“…Besides, another great advance in the communication system can be obtained using circularly polarized (CP) antennas to reduce the loss caused by the multi-path effects between the transmitter and receiver antennas. Many CP MAs have been investigated, such as the annular ring MA [1, 2], a circular MA [3], the rectangular patch MA with an L-shaped slit inset into the ground plane [4, 5], an asymmetrical dipole antenna [6] and an asymmetric-fed rectangular patch MA with the stub shorted at the ground plane [7]. However, the above-mentioned CP antennas are focused on the single-band operation and a common limitation of these is their bulky size like [1], and/or complex structure like [2, 3].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, in this paper, we propose a novel planar dual-band MA with circular polarization operation for wireless local area network (WLAN) communication. By appropricately introducing dual asymmetrical strip-sleeves shorted at the ground plane [8], different from the other designs using the inset slit [2, 4, 5], the proposed dual-band CP design can provide the impedance bandwidth (RL ≧10 dB) of about 260/988 MHz and the 3 dB axial-ratio (AR) bandwidth of about 103/710 MHz for 2.4/5.2 GHz WLAN applications, respectively. As a result, a symmetry pattern of bidirectional CP radiation has been observed.…”

Section: Introductionmentioning

confidence: 99%

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Planar compact dual-band monopole antenna with circular polarization for WLAN applications

Huang

2014

Int. J. Microw. Wireless Technol.

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A planar circularly polarized (CP) monopole antenna (MA) with dual-band operation for the IEEE 802.11a/b/g wireless local area network (WLAN) is proposed. By introducing dual strip-sleeves shorted at the ground plane, the excitation of dual-resonant modes can resemble the 2.4/5.2 GHz bands required for WLAN operations. The obtained impedance bandwidths (RL ≧10 dB) across the operating bands approach 260/988 MHz and the 3 dB axial-ratio bandwidth of about 103/710 MHz for 2.4/5.2 GHz bands, respectively. The model proposed in this study reflects more advantages in physical implementation as its overall volume is only 40 × 40 × 0.8 mm3, 22% smaller than other conventional CP MAs. The measured peak gain and radiation efficiency are about 4.1/3.3 dBic and 94/84%, respectively, and demonstrate nearly bidirectional patterns in the XZ- and YZ-planes.

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Section: Antenna Designmentioning

confidence: 99%