Design of a dual-band microstrip-fed meandered-tail PIFA for WLAN applications

Razali, Ahmad Rashidy; Bialkowski, M.E.

doi:10.1109/aps.2009.5171972

Cited by 10 publications

(9 citation statements)

References 3 publications

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“…The multiresolution (MR) approach [7][8][9] offers an alternative, physics-based preconditioning scheme especially suited to complex multiscale problems; use of a MR basis in MoM discretization produces a MoM matrix for which a diagonal preconditioning is successful in significantly improving the eigenvalue spectrum. The MR preconditioning has been applied in [10] to the analysis of quasi-planar, metallic structures in conjunction with the SM/AIM fast factorization.…”

Section: Received 15 October 2009mentioning

confidence: 99%

“…The multiresolution technique has been discussed in detail in [7][8][9]. The MR algorithm starts from any meshed geometry, and constructs a (nonredundant) set of functions that are multiscale and hierarchical; they are divided in subsets that have different levels of spatial resolution (or detail), which explains the attribute of multiscale.…”

Section: Received 15 October 2009mentioning

confidence: 99%

“…One shortfall of this technique is that as ground slots have to be closely located to the primary radiating element to form a strong coupling, there is a limited means for tuning slot dimensions. A solution to alleviate the aforementioned problem was described in [7] where a microstripline instead of a coaxial fed was employed to feed the primary PIFA radiator. Because the microstrip feedline can be positioned arbitrarily on the PCB, it offers a more flexible coupling to slots launching new resonant frequencies.…”

Section: Introductionmentioning

confidence: 99%

“…In contrast to the work presented in [7], the CIFA configuration with a straight quarter wavelength radiating arm accompanied by different orientated ground slots is considered. The substrate used is Rogers RO4003 with a dielectric constant of 3.38, tan d ¼ 0.0027 and thickness of 0.508 mm.…”

Section: Introductionmentioning

confidence: 99%

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Investigations on a multiband microstrip‐fed inverted‐F antenna with ground slots

Razali¹,

Bialkowski²,

Boldaji³

et al. 2010

Micro & Optical Tech Letters

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respectively, for the sample frequencies 7 GHz and 8 GHz where the main lobes are along -y direction in Figure 1 for both patterns. According to the results in these figures, the patterns are said to be symmetric and almost Gaussian. Besides, the patterns are quite insensitive to frequency changes in the given operation frequency band especially for H-plane that the patterns do not show crucial changes even for 1 GHz change in the frequency. The gains of the sole dielectric antenna are 13.1 dBi and 14 dBi for 7 GHz and 8 GHz, respectively where the gain of the antenna varies from 12.7 to 14.3 dBi within the frequency band 6.7-8.25 GHz.The cross-polarization characteristics, which is an another important fact for an antenna, are also examined for the given antenna. For this purpose, the copolarization and cross-polarization patterns of the antenna corresponding to E-plane and Hplane are given in Figure 11 and 12, respectively, for the sample frequency 7.5 GHz. According to these patterns belonging to 7.5 GHz, whereas the cross-polarization level is about 27 dB below copolarization level within the elevation angle range 90 6 30 (60-120) for E-plane, this level is about 30 dB below for the azimuth angle range 270 6 90 and about 40 dB below for the azimuth angle range 270 6 30 for H-plane. Throughout the frequency band 6.7-8.25 GHz, the relative cross-polarization level is at most À25 dB for elevation range 90 6 30 and À35 dB for azimuth range 270 6 30 . Therefore, a low cross-polarization system can be achieved by designing a proper parabolic reflector antenna, which takes the reflected fields of the proposed antenna within 30 beamwidth in both principal planes into account. CONCLUSION

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Section: Received 15 October 2009mentioning

confidence: 99%

Section: Received 15 October 2009mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Investigations on a multiband microstrip‐fed inverted‐F antenna with ground slots

Razali¹,

Bialkowski²,

Boldaji³

et al. 2010

Micro & Optical Tech Letters

Self Cite

View full text Add to dashboard Cite

show abstract

“…Recently, many multi-band PIFAs have been designed. In order to achieve multi-band operation, configurations like spiraled tail [3], meandered PIFA [4] or a radiator with a U-slot [5 6] are used. This paper presents a novel dual-band printed PIFA design, which is suitable for portable devices.…”

Section: Introductionmentioning

confidence: 99%

2.4/5-GHz dual-band PIFA for portable devices

Huang

See

Chen

2011

2011 IEEE International Symposium on Antennas and Propagation (APSURSI)

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In this paper, a 2.4/5-GHz dual-band planar inverted-F antenna (PIFA) design is proposed. Compared to existing dualband PIFAs, the antenna offers the advantage of a simpler and more compact design. The PIFA is designed for wireless local area network (WLAN) applications at 2.4 GHz (2.40-2.48 GHz) and 5 GHz (5.15-5.85 GHz). The size of the antenna is 94 50 mm, which makes it suitable for portable devices. The simulated and measured impedance and radiation performance of the antenna are given. In addition, a detailed parametric study is also performed, which provides useful information for antenna engineers.

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