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- Title
Application of switchable 4G/5G dual antenna system for laptops.
- Authors
Shao-Hung Cheng; Shu-Chuan Chen; Chang-Sheng Wu; Jo-Yen Nieh
- Abstract
This work investigates a switchable 4G/5G dual-antenna system designed for laptops. The dual open-slot antenna structure is straightforward, with a slot width of only 2 mm. Each individual antenna features two different feed sections located in two separate regions between the slots. Port 1 is a direct-feeding design with 3.6 pF chip capacitance, while Port 2 is only a direct-feeding design. When Port 1 is excited and Port 2 is terminated to 50-Ω, the antenna is functional in long-term evolution (LTE) low-band (617-960 MHz) and 5G sub-6 GHz band (3300-5000 MHz). On the other hand, when Port 2 is excited and Port 1 is terminated to 50-Ω, the antenna is functional in the LTE medium/high bands between 1710 and 2690 MHz. The measured isolation consistently exceeded 30 dB, and the efficiency remained above 48% across the entire frequency range. The calculated envelope correlation coefficients derived from the complex E-field radiation pattern measurements were consistently below 0.02. These findings indicate that the system is exceptionally well-suited for applications characterised by integrated metallic environments and a high display-to-body ratio.
- Subjects
ANTENNAS (Electronics); LAPTOP computers; MOBILE antennas; RADIATION measurements; SYSTEMS design; WIRELESS LANs; LONG-Term Evolution (Telecommunications)
- Publication
IET Microwaves, Antennas & Propagation (Wiley-Blackwell), 2024, Vol 18, Issue 2, p116
- ISSN
1751-8725
- Publication type
Article
- DOI
10.1049/mia2.12449