W-band finite ground coplanar monolithic multipliers

Author

Papapolymerou, John ; Brauchler, Fred ; East, Jack ; Katehi, Linda P B

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA

Volume

47

Issue

5

fYear

1999

fDate

5/1/1999 12:00:00 AM

Firstpage

614

Lastpage

619

Abstract

This paper describes the design, fabrication, and experimental evaluation of W-band planar monolithic varactor frequency multipliers based on finite ground coplanar (FGC) lines. These lines are a low-loss low-dispersion alternative of a planar transmission line to more conventional microstrip of coplanar waveguide lines at millimeter-wave frequencies. The near transverse-electromagnetic nature of propagation of the FGC lines simplifies circuit design and layout. Two-diode W-band varactor multipliers with input Q´s of two and three and FGC input and output have been realized. The multiplier with input Q=2 has an output power of 72 mW, an efficiency of 16.3% near 80 GHz, and a -3-dB bandwidth greater than 10 GHz, while the multiplier with Q=3 has an efficiency of 21.5% near 70 GHz and a 6-GHz bandwidth. This paper briefly describes the characteristics of the FGC lines, the design of the multipliers and their radiofrequency performance

Keywords

MIMIC; coplanar transmission lines; frequency multipliers; integrated circuit layout; millimetre wave frequency convertors; varactors; 16.3 to 21.5 percent; 6 to 10 GHz; 70 to 80 GHz; 72 mW; EHF; MIMIC; W-band; coplanar monolithic multipliers; fabrication; finite ground coplanar lines; low-dispersion lines; low-loss lines; millimeter-wave frequencies; varactor frequency multipliers; Bandwidth; Coplanar waveguides; Fabrication; Frequency; Microstrip; Millimeter wave circuits; Millimeter wave propagation; Planar transmission lines; Planar waveguides; Varactors;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.763163

Filename

763163