Design and fabrication of compact Wilkinson power divider on gallium nitride coplanar technology

Year 2023, , 113 - 118, 15.01.2023

Galip Orkun Arıcan

https://doi.org/10.28948/ngumuh.1151080

Abstract

In this article, an ultra-compact monolithic microwave integrated Wilkinson power divider (WPD) was accomplished for X-band applications. So as to reduce the size of the design, the miniaturization technique was illustrated with the theoretical analysis. After the theoretical analysis, the layout of the design and electromagnetic simulation were performed. The proposed Wilkinson power divider was manufactured with utilizing gallium nitride integrated passive device technology. In the measurement results, it was seen that the input and output (I/O) reflection coefficients were better than -15 dB in the frequency bandwidth of 8-12 GHz. In addition, the transmission coefficient was measured less than -4 dB in the X-band (8-12 GHz). Moreover, the 15-dB fractional bandwidth is 40% and the isolation between the outputs are better than -15 dB. The size of the proposed Wilkinson power was reduced to the dimensions of 700 m  700 m (0.0023 λg x 0.0023 λg, where λg is the wavelength value at the center frequency (10 GHz)), as 𝜋-type miniaturization technique was employed with monolithic lumped components. Beside its miniaturized size, the proposed power divider exhibits broadband characteristics while having any degradation in the electrical performance.

Keywords

Wilkinson power divider, Coplanar waveguide, Integrated passive device, Compact

Galyum nitrür koplanar dalga kılavuzu teknolojisinde kompakt Wilkinson güç bölücü tasarımı ve üretimi

Abstract

Bu makalede, ultra-kompakt mikrodalga tektaş Wilkinson güç bölücü entegre devre tasarımı X-bant uygulamaları için gerçekleştirilmiştir. Tasarımın boyutunun küçültebilmesinde minyatürleştirme tekniği kullanılarak, teorik olarak hesaplamaları anlatılmıştır. Teorik analizlerin tamamlanmasından sonra, tasarımın serim tasarımı yapılarak elektromanyetik benzetimleri gerçekleştirilmiştir. Önerilen devre tasarımı, galyum nitrür tümdevre pasif devre teknolojisi kullanılarak üretilmiştir. Ölçüm sonuçlarına göre, giriş ve çıkış (I/O) yansıma katsayılarının 8-12 GHz frekans bandı içerisinde -15 dB’den daha iyi olduğu görülmüştür. Ek olarak, X-bantta (8-12 GHz) araya iletim katsayısının -4 dB’den düşük olarak ölçülmüştür. Ayrıca, elde edilen ölçüm sonuçlarına göre prototipin 15-dB bant genişliği %40 olarak hesaplanmıştır ve çalışma frekans bandı içerisinde çıkış portları arasındaki izolasyonun -15 dB’den daha iyi olduğu görülmüştür. Ayrıca, önerilen Wilkinson güç bölücü tasarımının boyutu, 𝜋-tipi minyatürleştirme tekniğinde tümdevre devre elemanları kullanılarak 700 m  700 m (0.0023 λg x 0.0023 λg, burada λg merkez frekanstaki (10 GHz) dalga boyu değeridir) boyutlarına kadar düşürülmüştür. Geliştirilen güç bölücünün ölçüm sonuçlarına göre, minyatür boyutuna rağmen, elektriksel performansında herhangi bir kötüleşme olmadan geniş bantlı bir karakteristik sergilediği görülmüştür.

Keywords

Wilkinson güç bölücü, Koplanar dalga kılavuzu, Pasif entegre aygıt, Kompakt

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