Universal low-cost transmitarray antenna design at 61 GHz for beam steering with different feed antennas

Publikationstyp
Conference Paper
Date Issued
2020-02
Sprache
English
Author(s)
Frank, Martin  
Lurz, Fabian  
Weigel, Robert  
Kölpin, Alexander  orcid-logo
TORE-URI
http://hdl.handle.net/11420/8143
Citation
International ITG Workshop on Smart Antennas (WSA 2020)
Contribution to Conference
24th International ITG Workshop on Smart Antennas, WSA 2020  
Scopus ID
2-s2.0-85096797370
This paper presents the design and characterization of an universal low-cost transmitarray antenna operating at 61 GHz. The transmitarray design is based on unit cells with 1 bit phase resolution. A 180◦ phase shift is introduced by an element rotation on the bottom side of the unit-cell. Two separate layers of a RO4350B substrate are utilized to ensure a low-cost fabrication. One dimensional beam steering in azimuth is performed from 0◦ to 70◦ by 8 different transmitarrays. A selective laser sintered horn antenna and three different embedded wafer level ball grid array (eWLB) package antennas have been used as feed demonstrating the universal application of the designed transmitarray antennas. Additionally, two transmitarrays with different beam steering angle combinations in azimuth and elevation have been designed and successfully characterized with both horn antenna and package antenna to validate the 2D beam steering capability of the design.
Subjects
Array lens
Beam steering
Transmitarray antenna