This paper presents the design and characterization of 150-GHz branch-line couplers, fabricated in a quartz- integrated passive device (IPD) process. Based on C-L-C miniaturization structures, two ver...
Th2A-1: A Sub-mmW Receiver MMIC Achieving a 6.8-dB Average Noise Figure Over a >190-GHz Bandwidth
This paper presents a receiver monolithic microwave integrated circuit (MMIC) that covers a minimum frequency range from 140 to 333 GHz. The MMIC is fabricated in a 35-nm gate-length InGaAs metamorphi...
This work presents a 265–317-GHz 2-way frequency doubler with a wideband asymmetric Marchand balun, implemented in 65-nm CMOS. The proposed balun is realized by asymmetrically adjusting the coupling c...
This paper presents a submillimeter-wave (submm-wave) / terahertz (THz) push-push Colpitts oscillator that supports very low-voltage operation in 70-nm GaAs pHEMT technology. The oscillator core emplo...
This work reports on the design and implementation of the first integrated, balanced frequency quadrupler operating in the 480–530 GHz frequency range, with measured efficiency of 4.9% and correspondi...
This paper presents the realization and validation of metallized 3D-printed WR-1.0 (750–1100 GHz) hollow rectangular waveguide components. The components are fabricated as 15 mm long H-plane split-blo...
The FlexRadio “Aurora” is a state-of-the-art amateur-radio transceiver that operates from 1.8 to 54 MHz, producing 500 W output with an overall efficiency of 80 percent. Employing a combination of env...
This paper presents a design methodology for high-efficiency VHF Class-Φ₂ power amplifiers with a GaN-based sinusoidal resonant driver. While LDMOS devices are robust for the 10–20 W power level, thei...
We present a highly efficient, all-digital GaN-based power amplifier (PA) for compact, frequency-tunable transmitters. Using a look-up-table (LUT) based pulse encoder (PE) and a differential input of ...
Radio-frequency (RF) high-power (>= 500 W) plasma systems require fast, tunable impedance matching. However, conventional variable vacuum capacitor (VVC)-based networks suffer from slow mechani...