Open AccessNona‐band, hybrid antenna for metal‐rimmed smartphone applications
Author(s) -
Alshamaileh Mallak H.,
Alja'afreh Saqer S.,
Almajali Eqab
Publication year - 2019
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2019.0110
Subject(s) - monopole antenna , antenna (radio) , microstrip antenna , engineering , coaxial antenna , dipole antenna , electrical engineering , electronic engineering , patch antenna , antenna measurement , coupling (piping) , acoustics , physics , mechanical engineering
A new, hybrid, nona‐band antenna of the size 80 × 8 × 5 mm 3 is proposed for recent metal‐rimmed smartphone applications. The proposed design is composed of a metallic frame (external antenna) and an internal radiating structure. The proposed antenna is attached to the top part of the smartphone. It uses a microstrip feed as a direct coupling line for the internal radiating structure. The feed also represents a capacitive coupling feed for the overall metal‐rim antenna structure. The metal rim with a small gap of 2 mm is connected to the system printed circuit board by two grounding points. The proposed antenna excites four coupled loop modes, three slot monopole modes, three dipole modes, and one monopole mode. By incorporating the excited modes, the proposed antenna covers all recent smartphone applications in the frequency range between 0.79 and 6.0 GHz. The proposed design is described with great details and both simulated and measured results are used to establish its validity. The antenna performance with mobile phone components is also investigated. The results demonstrate that the proposed antenna represents an excellent candidate for applications such as GSM850, GSM900, GSM1800, GSM1900, UMTS2100, LTE2300, LTE2500, LTE3500, and WiFi5500 bands.