End-fire Complementary Antenna


A novel wideband antenna element suitable for millimeter-wave 5G mobile communications is developed. The antenna has an end-fire radiation and is suitable for mobile devices and base stations.

  • End-fire Complementary Antenna
Commercialisation opportunities
technology licensing agreement
Problem addressed

The millimeter-wave 5G bands are operated over a wide bandwidth from 24 GHz to 41 GHz. Mobile devices need antenna arrays with broadside and end-fire radation patterns for communicating with other devices at different directions. Design of wideband and end-fire antennas and arrays are challenging.

  • By employing the complementary antenna concept and using asymmetrical substrate integrated coaxial-like feed line, a wideband and high-gain antenna element is realized on dielectric laminates. The antenna has a compact volume and can be used alone or as the radiator element of an array design.
Key impact
  • Wide bandwidth, high gain and high radiation efficiency
  • High front-to-back ratio
  • Can be integrated with Antenna-in-Package design
  • Mobile communications
City University of Hong Kong (CityU)

As one of the fastest growing universities in the world over the past decade, City University of Hong Kong (CityU) is recognised as a hub for innovation in research and professional education. CityU identifies solutions to critical global challenges by extending the frontiers of knowledge both within and beyond existing research paradigms.

The University’s highly qualified academics are drawn from all over the world, not only bringing a wealth of research and professional experience to the teaching programmes, but also contributing to the knowledge and technology advancement.