Key Technologies and Future Trends of 5G Wireless Network Applications

Loung, Vincent Yong Kai; Ngah, Razali; Owusu, Joseph; Chua, Tien Han; Tweneboah-Koduah, Samuel; Din, Jafri

doi:10.1109/icsip52628.2021.9689036

Cited by 4 publications

(2 citation statements)

References 5 publications

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“…In fifth-generation (5G) technology, operating frequencies are divided into two ranges, which are Frequency Range 1 (FR1, 0.45-6 GHz) and Frequency Range 2 (FR2, 24.25-52.6 GHz). With the development of 5G technology, geometrically compact multiband systems have emerged in wireless communication systems [1][2][3]. As an essential component in multiband systems, bandpass filters (BPFs) with dual-band, large frequency ratio and compact size are highly desired [4][5][6], where the frequency ratio is the ratio of the center frequency of the high-frequency passband to that of the low-frequency passband.…”

Section: Introductionmentioning

confidence: 99%

A Large Frequency Ratio Dual-Band Integrated Bandpass Filter Based on MCSICL Structure

Zhu,

2024

Electronics

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In this paper, a dual-band integrated bandpass filter (DI-BPF) based on a mode composite substrate integrated coaxial line (MCSICL) is proposed for a large frequency ratio. The low-frequency bandpass filter is formed by incorporating an SICL line and a gap into the MCSICL, operating in the fundamental mode of the MCSICL. The high-frequency bandpass filter is formed by introducing grounded vias into the MCSICL, operating in the first high-order mode of the MCSICL. To guide the design, the equivalent circuit models of the low- and high-frequency bandpass filters are built. Based on the equivalent circuit models, the DI-BPF is synthesized for a large frequency ratio. The transitions from the DI-BPF to ground coplanar waveguides (GCPWs) are designed for the low- and high-frequency bandpass filters. The DI-BPF with the transitions is fabricated by the printed circuit board (PCB) process. Measurement results indicate a large frequency ratio of 23.16, with the isolation between the low- and high-frequency bandpass filters exceeding 30 dB from dc to 50 GHz.

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Section: Introductionmentioning

confidence: 99%

A Large Frequency Ratio Dual-Band Integrated Bandpass Filter Based on MCSICL Structure

Zhu,

2024

Electronics

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“…Because of increasing demands for higher data rates (such as wireless broadband connections, massive machine type communications, and highly reliable networks), the research studies on ffth-generation (5G) mobile communication systems have started. Te standardization of this technology is coming in 2020s [1,2]. Compared with previous generations, 5G mobile communication networks will use broader frequency bandwidths.…”

Section: Introductionmentioning

confidence: 99%

Design a Multistub Array Antenna at 28 GHz with Beam Switching Ability

Lak

2022

International Journal of Antennas and Propagation

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In this paper, a Millimeter Wave antenna is designed which has a compact, lightweight and planar configuration. The frequency band is 27–29.5 GHz as a candidate band for 5G/millimeter Wave (mmW) systems. The antenna structure is similar to Quasi Yagi antenna which has driver, director, feeding part, and reflector. Substrate Integrated Waveguide used for feeding part of single element antenna and Wilkinson power divider used for antenna array feeding network. The proposed antenna has been simulated, fabricated, and measured (S11, E, and H pattern). The simulation and measurement values showed good similarity. The switched line phase shifter used to consider the beam steering (rotation) ability of the designed antenna which is important in (mmW) systems such as RADARs and mobile handsets. To evaluate this ability, for 0 ° , 30 ° , 45 ° , and 90 ° phase differences, the beam steering angle ( θ ) simulated and also for − 90 ° and 90 ° implemented. The results showed that the efficiency, S11, and E patterns in the rotated beam is suitable and without degradation in antenna operation. To simulate and evaluate the designed antenna HFSS and CST Software are used.

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