Gain enhancement for microstrip reflectarray using superstrate layer

Meriah, Sidi Mohammed; Cambiaggio, E.; Staraj, Robert; Bendimerad, Fethi Tarik

doi:10.1002/mop.20928

Cited by 12 publications

(8 citation statements)

References 6 publications

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“…But in these cases for achieving high gain, a large number of elements are needed, which not only increases the size of the antenna but also decreases its efficiency (Lafond et al, 2001), (Kärnfelt et al, 2006) & ( Soon-soo oh et al, 2004. It has been reported that for high gain, a superstrate layer can be added at a particular height of 0.5 0 above the ground plane (Choi et al, 2003) , (Menudier et al, 2007) & (Meriah et al, 2008).…”

Section: Fig 1 Short Range Communicationmentioning

confidence: 99%

Superstrate Antennas for Wide Bandwidth and High Efficiency for 60 GHz Indoor Communications

Vettikalladi¹,

Lafond²,

Himdi³

2012

Wireless Communications and Networks - Recent Advances

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Section: Fig 1 Short Range Communicationmentioning

confidence: 99%

Superstrate Antennas for Wide Bandwidth and High Efficiency for 60 GHz Indoor Communications

Vettikalladi¹,

Lafond²,

Himdi³

2012

Wireless Communications and Networks - Recent Advances

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“…Usually, large superstrates are used for improving the gain [ 8, 9]. But our objective is different: we want to use the smallest superstrate for obtaining high stable gain and consistent radiation pattern in the frequency band.…”

Section: Aperture Coupled 2 × 2 Superstrate Antenna Arraymentioning

confidence: 99%

“…Conventional antenna arrays are used for high‐gain applications, but in these cases for achieving high gain, arrays of large number of elements are used which not only increases the size of the antenna but also decreases the efficiency of it [4–7]. It has been reported that for high gain, a superstrate layer can be added at a particular height of 0.5λ 0 above the ground plane [8–10]. This solution enables an increase of gain nearly 4 dB over a single parasitic patch at 12 GHz [8] and 5 dB at 10 GHz [9], but 9 dB at 60 GHz with an optimized superstrate size [10].…”

Section: Introductionmentioning

confidence: 99%

“…It has been reported that for high gain, a superstrate layer can be added at a particular height of 0.5λ 0 above the ground plane [8–10]. This solution enables an increase of gain nearly 4 dB over a single parasitic patch at 12 GHz [8] and 5 dB at 10 GHz [9], but 9 dB at 60 GHz with an optimized superstrate size [10]. In this article, the authors are proposing a 2 × 2 and a 4 × 4 antenna arrays with superstrate at 60 GHz using aperture coupling as the source of excitation.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Efficient and high‐gain aperture coupled superstrate antenna arrays for 60 GHz indoor communication systems

Vettikalladi¹,

Coq²,

Lafond³

et al. 2010

Micro & Optical Tech Letters

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improvements are, respectively, noticed according to the SISO case. However, compared to the results shown in Figure 9, higher BER levels are obtained, in this case, for the same SNR. This is due to the high delay spreading of the isotropic channel.The generated WiMAX frame is transmitted with respect to a certain power level. This level is changed by a 2 dBm step during the evaluation process. The system performances are then quantified by computing the mean BER levels at each step. The obtained results show the improvements provided by the use of multiple antennas techniques (cf. Fig. 12). For a high transmitting power, the BER level do not reach 10 À2 in the SISO case, while it moves closer to 10 À3 in the MISO and MIMO cases.Likewise, to ensure a BER of 10 À2 , the SISO system needs to transmit data with a power level of nearly À15 dBm, while the MISO system needs only À30 dBm. This represents a 15 dB power saving between the two configurations. Moreover, this power saving level can be enhanced up to 20 dB with the use of MIMO. These statements can be, clearly, observed in Figure 13, where the BER gain relative to each couple of antenna configurations is illustrated over the considered power range. CONCLUSIONSPerformances of a WiMAX MIMO-OFDM system have been studied through active measurements in a reverberation chamber. The aim of these tests is to estimate the contribution of MIMO techniques on this system in such a controlled environment. Moreover, this kind of tests allows evaluating and comparing performances of real systems in a reference context. Such an experimental system is influenced by many hardware or measurement context imperfections. For this reason, some corrections techniques have been set up and presented in this article. Improvements due to the use of multi-antennas and numerical correction techniques have been shown through the obtained results. The following step is to emulate channels with known PDP and AOA. This could help for conducting different kind of experiments:• Evaluation and comparison of different MIMO systems performances in a reference channel.• Evaluation and comparison of different estimation and correction algorithms performances in such channels.• Evaluation of the antennas parameters (coupling, antenna efficiency, etc.) on the real system capacities. ABSTRACT: Efficient and high-gain aperture coupled patch antenna arrays with superstrate at 60 GHz are studied and presented. It is noted that adding a superstrate with a specific size will induce a significant effect on antenna gain and radiation patterns. This capability is applied on the design of 2 Â 2 and 4 Â 4 arrays for high-gain application. The maximum measured gain of a 2 Â 2 superstrate antenna array is 16 dBi

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“…The SIW based structures can be implemented by various manufacturing processes such as conventional printed circuit board process (PCB) [8,9], multilayer PCB process [10], photoimageable thick film technology [11], and low-temperature cofired ceramic (LTCC) technique. There are many techniques to improve the gain, either by using large arrays [12,13], which in turn increases losses from the feed network especially at the high frequencies, or by using superstrates [14,15]. This technique is simple and efficient to improve the gain.…”

Section: Introductionmentioning

confidence: 99%

High Gain Superstrate Loaded Membrane Antenna Based on Substrate Integrated Waveguide Technology

Vettikalladi

2015

International Journal of Antennas and Propagation

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The design and the results of a single slot coupled substrate integrated waveguide (SIW) fed membrane antenna loaded with a superstrate layer are presented for 94 GHz communication system. The membrane antenna is designed using ANSYS HFSS and consists of 6 layers. The microstrip patch antenna (MPA) placed on the top pyralux substrate layer is excited by means of a longitudinal rectangular slot placed over the SIW structure in the bottom pyralux substrate. The simulated antenna impedance bandwidth is found to be 5 GHz (91.5–96.5 GHz) with a gain of 7 dBi. In order to improve the gain a superstrate layer is added above the membrane antenna. The maximum gain achieved is 14.4 dBi with an efficiency of 77.6% at 94 GHz. The results are verified using CST Microwave Studio and are found to be in good agreement.

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Gain enhancement for microstrip reflectarray using superstrate layer

Cited by 12 publications

References 6 publications

Superstrate Antennas for Wide Bandwidth and High Efficiency for 60 GHz Indoor Communications

Superstrate Antennas for Wide Bandwidth and High Efficiency for 60 GHz Indoor Communications

Efficient and high‐gain aperture coupled superstrate antenna arrays for 60 GHz indoor communication systems

High Gain Superstrate Loaded Membrane Antenna Based on Substrate Integrated Waveguide Technology

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