0.24 W F-Band Heterostructure Barrier Varactor Frequency Tripler
Paper i proceeding, 2007

We have designed, grown, fabricated and characterized a 111 GHz frequency tripler. An AlAs/InAlAs/InGaAs heterostructure barrier varactor (HBV) was used as the nonlinear device for generating higher order harmonics. Four mesas were connected which amounted to a total of twelve barriers in series. This multiplier design was optimized for high output power using an aluminium nitride substrate for improved heat dispersion. The tripler consisted of an HBV device flip-chip soldered onto the AlN microstrip circuit and mounted in a waveguide block. No movable tuners were used for the characterization of the tripler. We measured a maximum output power of 0.24 W with a 6% bandwidth and 20% conversion efficiency. These state-of-the-art results constitute a marked improvement of HBV-based multiplier performance.

high-power operation

frequency multiplier


heterostructure barrier varactor

semiconductor devices

terahertz source

millimetre wave devices


Josip Vukusic

Chalmers, Teknisk fysik, Fysikalisk elektronik

Tomas Bryllert

Chalmers, Teknisk fysik, Fysikalisk elektronik

Mahdad Sadeghi

Chalmers, Mikroteknologi och nanovetenskap (MC2), Nanotekniklaboratoriet

Jan Stake

Chalmers, Teknisk fysik, Fysikalisk elektronik




Elektroteknik och elektronik

Annan elektroteknik och elektronik