新しいマッチング構造を持つダブルバンド低騒音増幅器の設計
Mingwen Zhang1,2,3, Zhiqun Cheng1,4, Tingwei Gong1
1School of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, China.
Micromachines
|August 28, 2025
まとめ
この研究は,二帯域低騒音増幅器 (DB-LNA) の設計のための改良された複合阻力二帯域変圧器 (IDBT) を導入します. 新しいIDBTは効率的なインペダンス変換を可能にし,シンプルな構造で優れた性能を達成します.
科学分野:
- 電気工学
- マイクロウェーブ工学
- RF回路の設計
背景:
- 低騒音増幅器 (LNA) は,無線通信システムの重要な構成要素です.
- 現代のマルチスタンダードデバイスでは,ダブルバンドの動作がますます重要になっています.
- 既存のデュアルバンド LNA 設計は,複雑さとコンポーネント数で多くの課題に直面しています.
研究 の 目的:
- ダブルバンド低騒音増幅器 (DB-LNA) の設計のための新しい方法を提案し,検証する.
- DB-LNAの性能を向上させるために,改良された複合インペダンスのダブルバンドトランスフォーマー (IDBT) を導入する.
- 簡素化され,費用対効果が高く,調整可能なDB-LNAソリューションを実証する.
主な方法:
- パラレルカップリングラインとシリアルマイクロストリップラインを使用した新しい改良された複合インペダンスの二帯変圧器 (IDBT) の設計.
- IDBTとBFP840ESDトランジスタを単相DB-LNAに統合する.
- 設計された印刷回路板 (PCB) のプロトタイプの製造と試験
主要な成果:
- 設計された2.4/5.5GHzのDB-LNAは20.3/14.7dBの高いS21 (gain) を達成した.
- S11は -29. 8/ - 20. 3dB,S22は -15. 2/ - 16. 4dBで,入力と出力の優れた一致が観察されました.
- 高感度を示す1. 6/1. 6dBの低騒音値 (NF) が測定されました.
結論:
- 提案されたIDBTは,DCブロックコンデンサなしで,二重周波数での複雑なインペデンスを効果的に変換します.
- 開発されたDB-LNAは,シンプルな構造,低コスト,優れた性能の特徴を備えています.
- 設計は調整が容易で,ワイヤレスアプリケーションに実用的な利点を提供します.
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