Effect of idler terminations on the conversion loss for THz Schottky diode harmonic mixers
Paper i proceeding, 2019

Efficient and reliable frequency converters, preferably operating at room temperature, are critical components for frequency-stabilizing terahertz sources. In this work, we present the analysis of optimum configurations for Schottky diode-based x4, x6, and x8 harmonic mixers operating at 2.3 THz, 3.5 THz, and 4.7 THz respectively. Detailed large-signal analysis of the two basic single-ended Z- and Y-mixers was carried out using a standard Schottky-diode model. For each case, the conversion loss was minimized by finding optimal embedding impedances at RF, LO, and IF frequencies. The analysis shows that the Y-mixer has less conversion loss at a low LO pump power. However, the Z-mixer provides reduced loss with increasing harmonic index and pump power due to the associated power dissipation in idler circuits. The results provide preliminary design guidelines for room- temperature frequency converters and their use in phase-locked loop applications.

Harmonic mixers

Schottky diodes

QCL

Phase-locking

Författare

Divya Jayasankar

Gigahertzcentrum

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

Peter Sobis

Gigahertzcentrum

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

Jan Stake

Gigahertzcentrum

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz

21622027 (ISSN) 21622035 (eISSN)

44th International Conference on Infrared, Millimeter, and Terahertz Waves
Paris, France,

THz Schottky diode mixers for high resolution FIR spectroscopy

Rymdstyrelsen, 2018-01-01 -- 2019-12-31.

Styrkeområden

Informations- och kommunikationsteknik

Infrastruktur

Kollberglaboratoriet

Ämneskategorier

Elektroteknik och elektronik

DOI

10.1109/IRMMW-THz.2019.8873938

Mer information

Senast uppdaterat

2019-10-29