A Miniature Folded Shorted Patch Antenna for Dual-Band Operation $ $

Lau, K.L.; Kong, K.C.; Luk, Kwai Man

doi:10.1109/tap.2007.898649

Cited by 25 publications

(18 citation statements)

References 15 publications

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“…Besides, a much smaller ground plane is used for this antenna design. Assuming λ 0 is the free space wavelength of the center frequency at 910 MHz, the antenna has a ground plane dimension of 160 mm (0.48λ 0 ) × 160 mm (0.48λ 0 ), which is 70% less area than the ground plane proposed in [11,18]. Detailed dimension of the antenna is shown in Table 2.…”

Section: Antenna Geometrymentioning

confidence: 99%

“…The proposed antenna achieves a wide impedance bandwidth of 29.4% (1.48 to 1.99 GHz) at a low profile of 0.046λ 0 , where λ 0 is the free space wavelength at the center frequency of the impedance bandwidth. By cutting two slots in different parts of the patch, the antenna can be further improved for dual-band operation [18]. The lower band has an impedance bandwidth of 21.1% (0.790 to 0.976 GHz) whereas the upper band attains an impedance bandwidth of 32.2% (1.698 to 2.350 GHz).…”

Section: Introductionmentioning

confidence: 99%

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Compact Patch Antenna Design for Outdoor Rf Energy Harvesting in Wireless Sensor Networks

Sim

Shuttleworth²,

Alexander³

et al. 2010

PIER

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Abstract-In this paper, two compact patch antenna designs for a new application -outdoor RF energy harvesting in powering a wireless soil sensor network -are presented. The first design is a low-profile folded shorted patch antenna (FSPA), with a small ground plane and wide impedance bandwidth. The second design is a novel FSPA structure with four pairs of slot embedded into its ground plane. Performance of both antennas was first simulated using CST Microwave Studio. Antenna prototypes were then fabricated and tested in the anechoic chamber and in their actual operating environment -an outdoor field. It was found that the FSPA with slotted ground plane achieved a comparable impedance bandwidth to the first design, with an overall size reduction of 29%. Simulations were also carried out to investigate the effects of different design parameters on the performance of the proposed slotted ground plane FSPA.

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Section: Antenna Geometrymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Compact Patch Antenna Design for Outdoor Rf Energy Harvesting in Wireless Sensor Networks

Sim

Shuttleworth²,

Alexander³

et al. 2010

PIER

View full text Add to dashboard Cite

show abstract

“…So, a compact ultra wideband probe-fed antenna, with U-shaped slots in the folded patch [5], is proposed, as shows in fig.3 (a), (b), (c). It has an average gain of 1.5-dB, a band covers fro m 1.52 GHz to 4.1 GHz, and fine radiation pattern performance over the entire frequency range it works in.…”

Section: U-slot Ant Ennamentioning

confidence: 99%

Implementation and development of compact UWB proximity fuze sensor system

2011

2011 International Conference on Computational Problem-Solving (ICCP)

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A novel implementation of a low-cost proximity fuze sensor system is presented. This system has very small dimension with 40mm diameter and 25mm high, which can detect the target of a fixed distance, with a resolution of less than 20cm. The pulse generated by S RD (step recovery diode) is approximate Gaussian pulse, which have pulse duration of about 250ps and amplitude of about 2.4V. The most challenge in this work is antenna designing and echo wave receiving. A U-slot antenna is designed to fix for the limited space, to detect the echo signal, ultra-highspeed comparator is employed.

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“…Formerly, the most common method for reducing the size of these antennas was the use of a thick dielectric substrate with high dielectric constant. However, there has been significant progress in antenna design technology in recent years, and many new size-reduction techniques have been developed, such as cutting slots in the patch [7], using a shorting wall [8] or a shorting pin [9], and folding the microstrip patch to create a three-dimensional structure [10]. With the availability of these advanced design techniques, antenna designers are now free to use a variety of compact structures to enhance microstrip antenna characteristics such as gain, bandwidth, and radiation pattern.…”

Section: Introductionmentioning

confidence: 99%

Effects of ground plane size on a square microstrip patch antenna designed on a low-permittivity substrate with an air gap

Nguyen

Kim

Choo

2010

2010 International Workshop on Antenna Technology (iWAT)

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The effects of ground plane size on the characteristics of a square microstrip patch antenna designed on a low-permittivity substrate with an air gap were investigated. The characteristics studied include return loss, gain, halfpower beamwidth (HPBW), and radiation pattern. The gain and HPBW varied periodically with increasing ground plane size, and were out of phase with each other. The relationship of the above parameters with the height of the antenna was also considered. Decreasing the antenna height changed the smallest ground plane size for impedance matching, and also reduced back radiation, which improved the front-to-back level of the microstrip patch antenna.

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A Miniature Folded Shorted Patch Antenna for Dual-Band Operation $ $

Cited by 25 publications

References 15 publications

Compact Patch Antenna Design for Outdoor Rf Energy Harvesting in Wireless Sensor Networks

Compact Patch Antenna Design for Outdoor Rf Energy Harvesting in Wireless Sensor Networks

Implementation and development of compact UWB proximity fuze sensor system

Effects of ground plane size on a square microstrip patch antenna designed on a low-permittivity substrate with an air gap

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