Title :
Integrated 60-GHz Antenna on Multilayer Organic Package With Broadside and End-Fire Radiation
Author :
Amadjikpe, A.L. ; Choudhury, Debaditya ; Patterson, C.E. ; Lacroix, Bruno ; Ponchak, George E. ; Papapolymerou, John
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
Existing antenna and array systems for 60-GHz wireless personal area network communications suffer from inherent poor radiation at grazing angles. This limitation is overcome in this work with a highly integrated antenna module that combines both broadside and end-fire radiators in a single multilayer organic package. Liquid crystal polymer and Rogers RO3003 are used to implement a small form factor (12.5 mm × 10 mm × 1.3 mm) antenna architecture. The co-designed broadside and end-fire antennas are characterized and measured for operation in the 57-66-GHz frequency range. Measured boresight gains of 8.7 and 10.9 dBi are achieved for the broadside and end-fire antennas while maintaining 35-45-dB isolation between both antennas. The numerically estimated radiation efficiency is found to be 92.5% and 78.5% for the broadside and end-fire elements. These antennas are orthogonally polarized and suitable for frequency reuse. Integrated circuits are mounted inside recessed cavities to realize a fully active antenna module with beam switching or simultaneous radiation. To the best of our knowledge, this is the first publication of a single package multilayer integration of millimeter-wave active antennas with both azimuth and elevation coverage.
Keywords :
antenna radiation patterns; millimetre wave antenna arrays; Rogers RO3003; array systems; azimuth; beam switching; broadside antennas; co-designed broadside; elevation coverage; end-fire antennas; end-fire radiation; frequency 57 GHz to 66 GHz; frequency 60 GHz; grazing angles; liquid crystal polymer; millimeter-wave active antennas; multilayer organic package; numerically estimated radiation efficiency; single multilayer organic package; single package multilayer integration; wireless personal area network communications; Arrays; Cavity resonators; Dielectrics; Dipole antennas; Fabrication; Surface waves; 60 GHz; Broadside radiator; end-fire array; integrated antenna; millimeter wave; multibeam antenna; multilayer organic (MLO) package; switched-beam antenna;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2012.2226598