A Frequency-Multiplied Source With More Than 1 mW of Power Across the 840–900-GHz Band

Author

Maestrini, Alain ; Ward, John S. ; Gill, John J. ; Lee, Choonsup ; Thomas, Bertrand ; Lin, Robert H. ; Chattopadhyay, Goutam ; Mehdi, Imran

Author_Institution

Lab. d´´Etude du Rayonnement et de la Mater. en Astrophys., Univ. Pierre et Marie Curie - Paris 6, Paris, France

Volume

58

Issue

7

fYear

2010

fDate

7/1/2010 12:00:00 AM

Firstpage

1925

Lastpage

1932

Abstract

We report on the design, fabrication, and characterization of an 840-900-GHz frequency multiplier chain that delivers more than 1 mW across the band at room temperature with a record peak power of 1.4 mW at 875 GHz. When cooled to 120 K, the chain delivers up to 2 mW at 882 GHz. The chain consists of a power amplifier module that drives two cascaded frequency triplers. This unprecedented output power from an electronic source is achieved by utilizing in-phase power-combining techniques. The first stage tripler uses four power-combined chips while the last stage tripler utilizes two power-combined chips. The source output was analyzed with a Fourrer transform spectrometer to verify signal purity.

Keywords

Fourier transform spectra; frequency multipliers; power amplifiers; power combiners; submillimetre wave amplifiers; Fourrer transform spectrometer; electronic source; frequency 840 GHz to 900 GHz; frequency multiplier chain design; frequency-multiplied source; in-phase power-combining techniques; power 1.4 mW; power amplifier module; power-combined chips; signal purity; temperature 120 K; temperature 293 K to 298 K; two cascaded frequency triplers; Frequency multiplier; Schottky diode; frequency tripler; local oscillator; planar diode; power combining; submillimeter wavelengths; varactor;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/TMTT.2010.2050171

Filename

5481956