A 5G mm-wave compact voltage-controlled oscillator in 0.25 µm pHEMT technology

Es-Saqy, Abdelhafid; Abata, Maryam; Mehdi, Mahmoud; Fattah, Mohammed; Mazer, Saïd; Bekkali, Moulhime El; Algani, Catherine

doi:10.11591/ijece.v11i2.pp1036-1042

Cited by 16 publications

(6 citation statements)

References 22 publications

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“…al., 2000;Wang et al, 2019), (Fu et. al., 2020;Li & Cheng, 2020;Es-saqy et al, 2021). Nevertheless, these structures present a very low level of isolation between their three ports and, thus, require the use of filter circuits at each port.…”

Section: Sommentioning

confidence: 99%

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High Conversion Gain Self-Oscillating Mixer for 5G mm-wave Applications

Es-Saqy¹,

Abata²,

Fattah³

et al. 2022

ASMScJ

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We develop in this paper, a high conversion gain self-oscillating mixer (SOM) for 5G mm-wave applications using commercial 0.15µm GaAs PHEMT from UMS foundry. The up-conversion SOM transpose the IF signal from 2 GHz to 26 GHz LSB (lower sideband) signal using a 28GHz LO signal. The simulation results show that the SOM has a maximum conversion gain of 19dB, according to our knowledge, this structure presents the highest gain compared to SOMs published in the literature. While the 1dB compression point is obtained for an IF power of -20.6 dBm. The SOM circuit consumes 129mW and it occupies an area of 0.741 mm2.

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Section: Sommentioning

confidence: 99%

“…Therefore, in this section, we present the electrical circuit (Figure 6 saqy et. al., 2020a;Es-saqy et al, 2021).…”

Section: Voltage Controlled Oscillator Designmentioning

confidence: 99%

High Conversion Gain Self-Oscillating Mixer for 5G mm-wave Applications

Es-Saqy¹,

Abata²,

Fattah³

et al. 2022

ASMScJ

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“…Towards this achievement, three main use scenarios are supported by 5G. According to international telecommunications union-radio communication sector (ITU-R), 5G use cases are classified as enhanced mobile broadband (eMBB) requiring higher data rates, ultra-reliable and low latency communications (URLLC) where devices rely on very short latency to perform their task and massive machine-type communications that connect a large number of devices [3]- [5]. To support these use cases, new requirements have been defined such as 10Gbps throughput for eMBB, a latency of 1 millisecond for URLLC cases, and a high connection density for massive machine type communications (mMTC) [6].…”

Section: Introductionmentioning

confidence: 99%

Proportional fair buffer scheduling algorithm for 5G enhanced mobile broadband

Mamane

Fattah

Ghazi

et al. 2021

IJECE

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The impending next generation of mobile communications denoted 5G intends to interconnect user equipment, things, vehicles, and cities. It will provide an order of magnitude improvement in performance and network efficiency, and different combinations of use cases enhanced mobile broadband (eMBB), ultra reliable low latency communications (URLLC), massive internet of things (mIoT) with new capabilities and diverse requirements. Adoption of advanced radio resource management procedures such as packet scheduling algorithms is necessary to distribute radio resources among different users efficiently. The proportional fair (PF) scheduling algorithm and its modified versions have proved to be the commonly used scheduling algorithms for their ability to provide a tradeoff between throughput and fairness. In this article, the buffer status is combined with the PF metric to suggest a new scheduling algorithm for efficient support for eMBB. The effectiveness of the proposed scheduling strategy is proved through à comprehensive experimental analysis based on the evaluation of different quality of service key performance indicators (QoS KPIs) such as throughput, fairness, and buffer status.

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“…These characteristics make it possible to envisage attractive prospects for the provision of fast wired Internet connections and data and video trains, not to mention the possibilities of replacing existing cables. On the other hand, appropriate and reliable construction procedures and techniques are needed to study and then design antennas with the required performance for the fifth generation ("5G"), as well as predictive time and frequency domain simulations that can efficiently handle printed antennas [3,4]. Fifth generation ("5G") millimeter-wave frequency bands, including those in the 24.25-27.5 GHz and 57-64 GHz ranges, have received a lot of public interest due to their broadband characteristics that can support higher capacity and data rates for mobile communication systems [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Study and Design of Printed Rectangular Microstrip Antenna Arrays at an Operating Frequency of 27.5 GHz for 5G Applications

Didi¹,

Halkhams²,

Fattah³

et al. 2021

J. Nano- Electron. Phys.

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In this paper, the authors studied and designed a simple patch antenna with a rectangular shape and exploited it to construct an array formed by two antennas in parallel and another one formed by four antennas in parallel in the 5G millimeter band with an operating frequency of 27.5 GHz. This study aims to obtain better antenna performances like gain, directivity, S11, bandwidth, and efficiency. In this paper, we use a polyamide-type substrate with relative permittivity εr of constant value equal to 4.3, thickness hs of constant value equal to 0.15 mm, width Wg  3.77 mm and length Lg  4.55 mm, which represents a suitable material for antenna designs proposed in this paper. Furthermore, in this paper, the total size of this single printed antenna is equal to 2.578  3.35  0.15 mm 3 . The single patch antenna resonates at 27.0787 GHz with a return loss (S11) measurement value equal to -28.1548 dB, a bandwidth value equal to 1.03 GHz, a VSWR of 1.081, a gain value equal to 6.3 dB, a directivity value equal to 6.7 dB, and radiation efficiency of 92.64 %. The proposed 1  1 antenna array operates at 27.42 GHz and improves the performance achieved with a previous single antenna as follows, including S11 (down to -30 dB), gain (7.3 dB), and directivity (7.8 dB). Similarly, the proposed 2  2 antenna array successfully improves S11 down to -31.7 dB, gain up to 10.6 dB, bandwidth up to 1.07 GHz, and directivity up to 11.2 dB at a resonant frequency of 27.078 GHz. The antenna designs presented in this paper are performed using the highfrequency structure simulation (HFSS) tool. In addition, antennas proposed in this paper are adapted to the 27.5 GHz frequency range as well as applied to the 5G mobile communication system.

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A 5G mm-wave compact voltage-controlled oscillator in 0.25 µm pHEMT technology

Cited by 16 publications

References 22 publications

High Conversion Gain Self-Oscillating Mixer for 5G mm-wave Applications

High Conversion Gain Self-Oscillating Mixer for 5G mm-wave Applications

Proportional fair buffer scheduling algorithm for 5G enhanced mobile broadband

Study and Design of Printed Rectangular Microstrip Antenna Arrays at an Operating Frequency of 27.5 GHz for 5G Applications

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