Design of multi-octave band GaN-HEMT power amplifier

Eren, Gulesin; Sen, Ozlem; Bolukbas, Basar; Kurt, Gokhan; Arican, Galip Orkun; Cengiz, Omer; Unal, Sila T.K.; Durmus, Yildirim; Özbay, Ekmel

doi:10.1109/edssc.2012.6482767

Cited by 1 publication

(1 citation statement)

References 4 publications

(1 reference statement)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, a variety of the proposed mBLCs are unsuitable for high frequency and high‐power applications. Herein large bandgap semiconductors (i.e., Silicon Carbide and Gallium Nitride [GaN]) are encouraging materials for the rising generation high‐power devices 21 . Nevertheless, GaN on SiC is a the charming for the high‐frequency solid‐state devices for the sake of having high‐current density, having enhanced thermal conductivity, being radiation hardened and having high‐power handling capability.…”

Section: Introductionmentioning

confidence: 99%

A novel miniaturized X‐band coplanar waveguide branch‐line coupler using T‐ and 𝜋‐type equivalent transmission lines

Arican

Sen

Turhan‐Sayan

2022

Int J RF Mic Comp-Aid Eng

View full text Add to dashboard Cite

This article reports a novel compact branch‐line coupler (BLC) in coplanar waveguide technology for X‐band monolithic microwave integrated circuit (MMIC) applications. This article consists of theoretical basis, design, and measurement results of the developed miniaturized BLC. In this study, the theoretical basis of the miniaturized BLCs were analyzed and the T‐ and π‐type equivalent transmission line approaches and meandering technique were utilized to significantly miniaturize the conventional BLC. The proposed BLC was manufactured with gallium nitride MMIC technology. The manufactured BLC has a return loss of better than −12 dB over 8.5–11.1 GHz which yields a 26.8% bandwidth. In addition, the insertion losses |S21| and |S31| were measured as −3.5 dB and −3.6 dB at 9.6 GHz. Moreover, the phase difference between the output ports were 90° ± 5° over the frequency bandwidth of 9.2–11.6 GHz. Furthermore, the proposed BLC has a size of 3.9 mm2 (0.152λ × 0.156λ) and this achieves 62% size reduction with respect to the conventional BLC design. The developed novel miniaturized BLC can be utilized in the X‐band applications.

show abstract

Section: Introductionmentioning

confidence: 99%