A wideband antenna based on self-packaged suspended coplanar waveguide technology

In this article, a wideband antenna is implemented by using a multilayer self-packaged suspended coplanar waveguide (SCPW). The lower air cavity of the SCPW is not only used for antenna suspending but also as an antenna reflector, while the reflector structure can be expanded by copper coating on the periphery of the multidielectric substrates, which improves the antenna radiation and antenna gain effectively, while the antenna profile is not increased. An extra patch is introduced for generating more resonances, which extends the antenna bandwidth importantly. The proposed antenna is designed to work at 5.42 GHz with a fractional bandwidth of 26.2% (4.71-6.13 GHz), and a maximum gain of 8.4 dBi. The SCPW antenna has been fabricated and measured, and the design has been demonstrated with the advantages of self-packaging, wideband, favorable gain, and even low profile as well as miniature circuit size.

Automated summary

In this article, a wideband antenna is implemented using a multilayer self-packaged suspended coplanar waveguide (SCPW). The lower air cavity of the SCPW serves as both the antenna suspending and reflecting structure, which can be expanded by copper coating on the periphery of the multidielectric substrates, effectively improving the antenna radiation and gain without increasing the antenna profile. An additional patch is introduced to generate more resonances, significantly extending the antenna bandwidth. The designed SCPW antenna operates at 5.42 GHz with a fractional bandwidth of 26.2% (4.71-6.13 GHz) and a maximum gain of 8.4 dBi. Fabrication and measurement of the SCPW antenna demonstrate its advantages of self-packaging, wideband capability, favorable gain, low profile, and miniature circuit size.