A Frequence-Reconfigurable Tuner-Loaded Coupled-Fed Frame-Antenna for All- Metal-Shell Handsets

A frequency-reconfigurable frame-antenna integrated with a coupling strip and tuner loading is proposed for all-metal-shell mobile telephones. The coupling strip introduces additional capacitance to the feeding structure of the antenna, rendering the antenna to resonate at both the lower frequency band at "a quarter-wavelength resonant mode" and the higher frequency band at "a half-wavelength resonant mode". Moreover, the antenna loaded with a tuner achieves broadband frequency-reconfiguration by tuning the effective length of radiating frame. The antenna is designed by taking into consideration all the metallic components, like front-and-back cameras, telephone receiver, and a steel sheet. The metal-frame and metal-shell of the handset coupled with a strip are used as parts of the antenna. This paper of a prototype operating in a practical handset test environment shows that the proposed antenna is able to cover the bandwidth of 824-960 MHz (GSM) and 1710-2690 MHz (DCS/PCS/UMTS/LTE) with acceptable radiation efficiency up to 40% and desirable patterns and specific absorption ratio, which is much lower than 1.6 W/kg for mobile communications.11Ysciescopu

Reconfigurable Near-field Beamformer consisting of 2-bit PFSS

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A 28 GHz End-fire Vertically-Polarized Antenna for 5G Mobile Phone Applications

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Antenna and RF frontend design technologies for millimeter-wave fifth generation (5G) cellular devices

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On the design of multiband antenna employing AFSR structure as ground plane for low out-of-band RCS

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AiP design for 5G millimeter-wave cellular devices

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Solving the 5G Mobile Antenna Puzzle: Assessing Future Directions for the 5G Mobile Antenna Paradigm Shift

Advances in antenna technologies for cellular hand-held devices have been synchronous with the evolution of mobile phones over nearly 40 years. Having gone through four major wireless evolutions [1], [2], starting with the analog-based first generation to the current fourth-generation (4G) mobile broadband, technologies from manufacturers and their wireless network capacities today are advancing at unprecedented rates to meet our unrelenting service demands. These ever-growing demands, driven by exponential growth in wireless data usage around the globe [3], have gone hand in hand with major technological milestones achieved by the antenna design community. For instance, realizing the theory regarding the physical limitation of antennas [4]-[6] was paramount to the elimination of external antennas for mobile phones in the 1990s. This achievement triggered a variety of revolutionary mobile phone designs and the creation of new wireless services, establishing the current cycle of cellular advances and advances in mobile antenna technologies.1110sciescopu

밀리미터파 대역 5G RF 프런트엔드를 위한 3D 프린터 기반 안테나 인 패키지 설계

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A Concept of Reconfigurable Block Cell Antenna for Universal Millimeter-wave 5G Applications.

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