A new circular polarization dual feed microstrip square patch antenna using branch coupler feeds for WLAN/HIPERLAN applications

Moubadir, Mahmoud; Badaoui, Imane; Touhami, Naima Amar; Adnane, M.; Ouahabi, Mohssine El

doi:10.1016/j.promfg.2019.02.274

Cited by 11 publications

(7 citation statements)

References 13 publications

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“…European Telecommunications Standards Institute (ETSI) developed the HIPERLAN standard, which is a wireless communication standard that responsible for providing a digital high-speed data rate [13,[17][18][19]. HIPERLAN standard works in the 5 GHz band and relay on Orthogonal frequency-division multiplexing (OFDM) [20].…”

Section: Hiperlan/2 Systemmentioning

confidence: 99%

Noise Reduction in HIPERLAN/2 System Integrated with Alamouti Technique

Yahya¹

2020

Proceedings of the Proceedings of the 1st International Multi-Disciplinary Conference Theme: Sustainable Development and Smart

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HIPERLAN/2 system integrated with Alamouti technique is presented, where multiple input multiple output system including space time diversity have been employed into HIPERLAN/2 system. This method, noise reduction is applied when the transmitted antennas are closely located to the receive antennas, and they are working in a full-mode duplexing. Several factors for testing the performance of the modified system such as changing the modulation scheme and the feedback accuracy have been considered, the system performance was tested in terms of bit error rate (BER) and the signal to noise ratio (SNR). MATLAB and Simulink are used for simulating and evaluating the suggested system. the performance of the suggested system is mainly depending on the feedback mismatch amount. The modified system performance enhances as the feedback accuracy increases.

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Section: Hiperlan/2 Systemmentioning

confidence: 99%

Noise Reduction in HIPERLAN/2 System Integrated with Alamouti Technique

Yahya¹

2020

Proceedings of the Proceedings of the 1st International Multi-Disciplinary Conference Theme: Sustainable Development and Smart

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“…HIPERLAN is a standard on digital high-speed wireless communication, developed by ETSI [10,[14][15][16]. Orthogonal frequency-division multiplexing (OFDM) is employed to operate in the 5 GHz band [17].…”

Section: Hiperlan/2 Systemmentioning

confidence: 99%

Noise Cancellation for HIPERLAN/2 with Open Loop Transmit Diversity Technique

et al. 2019

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A new proposed method is presented, where multiple antennas have been applied into HIPERLAN/2 system in addition to employing space-time diversity technique, especially the Alamouti technique. The suggested approach is used to cancel or reduce the effect of the transmitted power using a feedback signal process within the transceiver unit, especially when the antennas are closely located and working in full-mode duplexing. Several parameters including the transmitted power, the received power, and the feedback accuracy have been considered for testing the performance of the system in term of the signal to noise ratio (SNR) versus bit error rate (BER). A software programme using MATLAB and Simulink is implemented to evaluate the proposed method. The results showed that the system performance is heavily dependent on the amount of the mismatch in the feedback, the received power, and the transmitted power. The performance of the system decreases as the feedback accuracy increases when the transmitted power and the received power are constant. At the same time, the performance of the system decreases as the transmitted power increases when the received power and the mismatch are constant. Finally, the increase in the received power enhances the system performance when the other parameters are constant.

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“…The coupler provides the 90 • phase shift needed for CP, and the antenna radiates either LHCP or RHCP, depending on the excited port [16,17]. A dual-feed CP microstrip antenna fed by a reconfigurable hybrid coupler 90 • has been demonstrated in [18] which suffers from narrow impedance and AR bandwidth. Recently, in [19] a crescent-shaped slot antenna with the capability of producing dual-CP is introduced, but the proposed structure radiates in two directions which is not useful for unidirectional applications.…”

Section: Introductionmentioning

confidence: 99%

A Low-profile and Low-cost Dual Circularly Polarized Patch Antenna

Mousavirazi¹,

Naserri²,

Ali³

et al. 2022

PIER Letters

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This paper presents a low profile and low-cost patch antenna with dual circularly polarized (CP) capability in X-band at a canter frequency of 8.3 GHz. The dual-CP antenna is divided into three layers, composed of a parasitic square patch, a radiation square patch with four equal arms, and a 90 • patch coupler. Two arms of the radiation patch are connected to the 90 • hybrid coupler using two metalized vias. Right-handed circular polarization (RHCP) and left-handed circular polarization (LHCP) are achieved by exciting two different ports. To validate the proposed design, the prototype of the dual-CP antenna is fabricated and measured. Based on the measurement, the structure of the proposed antenna has an excellent circular-polarization purity of less than 3 dB over the whole operational frequency bandwidth of the antenna (8 GHz-8.47 GHz) with a wide 3-dB axial ratio (AR) beamwidth of 133 • across the angular range from −55 • to +78 • at 8.3 GHz.

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A new circular polarization dual feed microstrip square patch antenna using branch coupler feeds for WLAN/HIPERLAN applications

Cited by 11 publications

References 13 publications

Noise Reduction in HIPERLAN/2 System Integrated with Alamouti Technique

Noise Reduction in HIPERLAN/2 System Integrated with Alamouti Technique

Noise Cancellation for HIPERLAN/2 with Open Loop Transmit Diversity Technique

A Low-profile and Low-cost Dual Circularly Polarized Patch Antenna

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