@article{article, title  = {{Circularly Polarized Double Layered Printed Hemispherical Helical Antenna with a Parasitic Wire for Bandwidth Enhancement}},

 publisher = {{Walter de Gruyter GmbH}},

 url = {{https://doi.org/10.1515/freq-2013-0149 }},

 year = {{2014}},

 month = {{5}},

 author = {{Latef TA and Khamas SK and Reza AW}},

 doi = {{10.1515/freq-2013-0149}},

 volume = {{68}},

 journal = {{Frequenz}},

 issue = {{7-8}},

 note = {{Accessed on 2025/12/02}}}