90-GHz CMOS Phased-Array Transmitter Integrated on LTCC

A. Vahdati, A. Lamminen, M. Varonen, J. Säily, M. Lahti, Kari Kautio, M. Lahdes, D. Parveg, D. Karaca, K. A.I. Halonen

Research output: Contribution to journalArticleScientificpeer-review

8 Citations (Scopus)


This paper presents the design of a 90-GHz phased-array transmitter front-end on low temperature co-fired ceramic (LTCC) technology. The MMIC components have been fabricated by CMOS technology and flip-chipped on the LTCC to realize the transmitter front-end. The DC and differential hybrid IF signals are provided to the flip-chipped components through the bias and IF lines designed on the LTCC. A 1×4-patch antenna array has been designed for the transmitter and fabricated on the LTCC. The DC and IF signal pads on the LTCC were soldered to the designed printed circuit board (PCB) pads for measurements. The measurement results show that by using a receiver horn antenna, the maximum received power at 92 GHz is –37.3 dBm at a communication distance of 1 m. The transmitter is capable of providing ±25° beam-steering with respect to boresight and 20° half-power beamwidth (HPBW) at 90 GHz. The total power consumption of the transmitter front-end is 656 mW.

Original languageEnglish
Article number8014513
Pages (from-to)6363-6371
Number of pages8
JournalIEEE Transactions on Antennas and Propagation
Issue number12
Publication statusPublished - 2017
MoE publication typeA1 Journal article-refereed


  • 5G Antennas
  • Antenna measurements
  • CMOS Technology
  • Gain
  • LTCC
  • Millimeter Wave Integrated Circuits
  • Mixers
  • Phase shifters
  • Phased arrays
  • Phased Arrays
  • Radio transmitters
  • W-Band


Dive into the research topics of '90-GHz CMOS Phased-Array Transmitter Integrated on LTCC'. Together they form a unique fingerprint.

Cite this