article · Microwave and Optical Technology Letters
A compact frequency-reconfigurable multiband antenna has been designed and experimentally validated on an FR-4 substrate measuring 48 by 42 by 1.6 millimetres. The design incorporates a modified rhombus-shaped patch with dual open slots and a defected ground plane, created for S-band, 5G Sub-6 GHz, Wi-Fi, and WLAN operations. Under standard operation, the structure exhibits four distinct resonant frequencies at 2.018, 3.80, 4.58, and 5.25 GHz. Tuning of the highest and lowest resonance points is possible independently by altering specific slot lengths, providing flexible design control. Furthermore, switching the conductivity of the ground slot to emulate a PIN diode's ON and OFF states reconfigures the device into a dual-band mode operating at 3.79 and 5.04 GHz. Experimental measurements from the fabricated prototype correspond closely with numerical simulations.
Modern wireless communication devices require hardware capable of connecting across multiple standards, such as Wi-Fi and 5G, without taking up excess space. A single reconfigurable antenna that can switch between frequency modes eliminates the need for multiple separate antennas. This reduces physical footprint, lowers manufacturing complexity, and aids the miniaturisation of multifunctional wireless devices.
The technology targets applications across S-band, 5G Sub-6 GHz networks, Wi-Fi, and WLAN systems. Manufacturers of wireless communication equipment and connected devices could integrate such designs to support multi-standard connectivity. The antenna is at an applied and tested stage of development, having been physically fabricated and verified against simulation models, though deployment would require transition from simulated diode switching to integrated switching circuitry.
AI-generated from the published abstract. Always read the original work before citing.
ABSTRACT This paper presents a novel compact frequency‐reconfigurable multiband antenna based on a modified rhombus‐shaped patch loaded with dual open slots and a defected ground plane, targeting S ‐band, 5G Sub‐6 GHz (NR n77/n78), Wi‐Fi, and WLAN applications. Fabricated on FR‐4 substrate (48 × 42 × 1.6 mm 3 ), the antenna exhibits four resonances at 2.018, 3.80, 4.58, and 5.25 GHz. The highest and lowest resonances are shown to be independently tunable through the slot lengths L1 and Lg, offering flexible design control. Reconfiguration to a dual‐band response (3.79 and 5.04 GHz) is demonstrated by switching the ground‐slot conductivity, emulating a PIN diode's ON/OFF states. Measured results show good agreement with COMSOL Multiphysics simulations.
This page summarises published work. The authoritative version sits with the publisher.
DOI: 10.1002/mop.70771
Is something wrong with this record? Report it or request removal.
Discussion
Have you built on this work, tried to replicate it, or seen it applied in practice? Share what you know. Verified researchers and MARATTO™ domain experts can open a discussion, and any member can reply. Contributions are reviewed before they appear.
No discussion yet. Open the first thread.
New to MARATTO™? Create a free account.
