Equivalent Lumped Elements of DC-Biased Thin Film Microstrip Line in MMICs

Author

Wu, Hung-Wei ; Weng, Min-Hang ; Su, Yan-Kuin ; Yang, Ru-Yuan ; Hung, Cheng-Yuan

Author_Institution

Nat. Cheng Kung Univ., Tainan

Volume

17

Issue

9

fYear

2007

Firstpage

673

Lastpage

675

Abstract

This letter investigates the equivalent lumped elements of the thin film microstrip line (TFML) with different DC-bias voltages for the first time. The wide-band frequency-dependent characteristic impedance Z_o(f) and equivalent lumped elements such as R(f), L(f), G(f), and C(f) are accurately characterized for DC-biased TFML on a 20-m thick low dielectric constant (K) polyimide up to 50 GHz. The experimental results shows the DC-biased TFML can be extensively applied to the voltage-controlled passive and active integrated circuits.

Keywords

MMIC; active networks; microstrip lines; passive networks; permittivity; polymers; thin film circuits; DC-bias voltage; DC-biased thin film microstrip line; MMIC; active integrated circuits; equivalent lumped elements; thick low dielectric constant polyimide; voltage-controlled passive circuit; wide-band frequency-dependent characteristic impedance; Dielectric constant; Dielectric thin films; Frequency; Impedance; MMICs; Microstrip; Polyimides; Transistors; Voltage; Wideband; DC-bias; low ${K}$; monolithic microwave integrated circuit (MMIC); polyimide; thin film microstrip line (TFML);

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2007.903458

Filename

4295135