Title :
A novel 3-dB coupler for MMIC using air-gap stacked microstrip lines
Author :
Ryu, Gi-Hyon ; Kim, Dae-Hyun ; Lee, Jae.-Hak. ; Seo, Kwang-Seok
Author_Institution :
Sch. of Electr. Eng., Seoul Nat. Univ., South Korea
fDate :
1/1/2000 12:00:00 AM
Abstract :
A simple broadside-coupled line structure for MMIC is proposed which uses air-gap stacked microstrip lines and does not require any dielectric process. The analysis and optimization of the coupled line structure were performed by using an electromagnetic simulator. The fabricated 3-dB coupler shows broad-band characteristics (23-45 GHz) with the coupling loss of 3.33±0.46 dB and the transmission loss of 3.73±0.43 dB
Keywords :
MMIC; microstrip couplers; 23 to 45 GHz; 3.33 dB; 3.73 dB; MMIC coupler; air-gap stacked microstrip lines; broadband characteristics; broadside-coupled line structure; coupling loss; electromagnetic simulation; transmission loss; Air gaps; Conductors; Coupling circuits; Dielectrics; Electromagnetic coupling; Gallium arsenide; MMICs; Microstrip; Propagation losses; Substrates;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
