Abstract
A CPW-fed ultra-wideband antenna was designed. The antenna was etched on a single-layer copper-cladding substrate, of which the material was FR4 with relative permittivity of 4.4, and the magnitude was 40.0 mm × 50.0 mm × 1.6 mm. The parameters of the antenna are simulated and optimized with HFSS. This paper proposes a new trapezoidal CPW-fed UWB antenna that the bandwidth (return loss ≤ ?10 dB) covers 2.7 - 9.3 GHz range, which means a relative bandwidth of 110% with good radiation patterns and gain. Simulated and measured results for return loss, radiation pattern and gain were presented. A good agreement has been obtained between the simulation and experiment and the proposed antenna meets the requirements of the ultra-wideband antenna.
Highlights
Traditional Ultra-wideband (UWB) antennas have been unable to combine with the modern integrated system for their complex structures and large volumes, miniaturized ultra-wideband printed antennas being good candidates for their low profile
This paper proposes a new trapezoidal Coplanar Waveguide (CPW)-fed UWB antenna that the bandwidth covers 2.7 - 9.3 GHz range, which means a relative bandwidth of 110% with good radiation patterns and gain
A prototype antenna was fabricated and measured. It demonstrates that the compact design can achieve an ultra wide bandwidth, the operation bandwidth being 2.7 - 9.3 GHz, covering WLAN operating band, with satisfactory radiation patterns and 9.6 dB peak gain
Summary
Traditional Ultra-wideband (UWB) antennas have been unable to combine with the modern integrated system for their complex structures and large volumes, miniaturized ultra-wideband printed antennas being good candidates for their low profile. CPW-fed printed antennas have received considerable attention owing to their attractive merits, such as ultra-wide frequency band, good radiation properties and easy integration with system circuits. Most previously reported CPW-fed antenna designs are complex [1,2,3,4], with poor radiation patterns, unsuitable for practical applications. A prototype antenna was fabricated and measured. It demonstrates that the compact design can achieve an ultra wide bandwidth, the operation bandwidth being 2.7 - 9.3 GHz, covering WLAN operating band, with satisfactory radiation patterns and 9.6 dB peak gain
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