Title :
Integrated transmission line transformer
Author :
Horn, J. ; Boeck, G.
Author_Institution :
Technische Univ. Berlin, Germany
Abstract :
This paper presents Guanella type spiral transmission line transformers (TLTs) fabricated on GaAs. The operating frequency is 1 to 15 GHz and the impedance transformation ratio is 4:1, matching 12.5 Ω and 50 Ω. Based on the commonly used TLT equivalent circuit a simple analysis of the structures is given that yields excellent agreement with measurements.
Keywords :
III-V semiconductors; equivalent circuits; gallium arsenide; impedance matching; microstrip lines; semiconductor device models; transformers; transmission lines; 1 to 15 GHz; 12.5 ohm; 15 ohm; GaAs; Guanella type TLT; TLT equivalent circuit; impedance transformation ratio; integrated transmission line transformer; operating frequency; spiral transmission line transformer; transformer fabrication; Bandwidth; Coils; Distributed parameter circuits; Frequency; Gallium arsenide; Impedance; MMICs; Transmission lines; Voltage; Wounds;
Conference_Titel :
Microwave Symposium Digest, 2004 IEEE MTT-S International
Print_ISBN :
0-7803-8331-1
DOI :
10.1109/MWSYM.2004.1335844
