Ka-band direct transmitter modules for baseband pre-compensation

D. Drolet, A. Panther, C. J. Verver, K. Kautio, Yeong-Lin Lai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)


This paper presents two different RF modules for implementation in a Ka-band direct transmitter architecture with feedback for baseband I/Q pre-compensation. The first module is realized using conventional MIC technology, and combines a direct Ka-band SSB modulator, a driver amplifier, a microstrip directional coupler, and a detector circuit in the feedback loop. A maximum conversion gain of +9.6dB is measured at 29GHz. The second module was fabricated using LTCC technology to provide similar functionality in a more compact package. Measured conversion gain for this unit reaches a maximum of +6.1dB at 29GHz. With pre-compensation, suppression levels of at least 40dB for the carrier, and 30dB for the image sideband, have been achieved for both modules.

Original languageEnglish
Title of host publication35th European Microwave Conference 2005 - Conference Proceedings
Number of pages4
Publication statusPublished - 2005 Dec 1
Event2005 European Microwave Conference - Paris, France
Duration: 2005 Oct 42005 Oct 6

Publication series

Name35th European Microwave Conference 2005 - Conference Proceedings


Other2005 European Microwave Conference

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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