The C-band is extensively utilized in aviation radars and satellite communications (Satcom). Bandpass filters (BPFs) are crucial components in microwave systems operating within this frequency range. Therefore, it is important to develop a straightforward and effective method for designing BPFs with desired response characteristics. Currently, the prevailing approach for designing wideband microstrip BPFs involves employing multiple microstrip resonators and empirical techniques. However, some of these approaches lack comprehensiveness and a systematic design process. The design steps used for a specific type of microstrip filter with a particular cut-off frequency may not be directly applicable to developing a different filter with a distinct cut-off frequency. Conversely, having a systematic design process and software that can generate filter structures based on the filter order and response characteristics provides significant advantages in designing LC filters. Therefore, if we can design an LC filter with the desired response using conventional methods and subsequently convert it to a microstrip filter, we can achieve a more systematic design approach. The present paper proposes an innovative method to convert LC bandpass filters obtained using classical functions such as Elliptic, Butterworth, Chebyshev, and Bessel functions into microstrip BPFs. The designed microstrip BPFs offer a simple and repeatable design process and possess the flexibility to adjust the working frequency by employing a specific scaling factor. This adaptability makes the designed microstrip BPFs suitable for various applications, including Satcom and 5G systems.

中文翻译：

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一种简化且高效的微带带通滤波器设计方法：卫星和 5G 通信中的应用

C 波段广泛用于航空雷达和卫星通信（Satcom）。带通滤波器 (BPF) 是在此频率范围内运行的微波系统的关键组件。因此，开发一种简单有效的方法来设计具有所需响应特性的 BPF 非常重要。目前，设计宽带微带带通滤波器的流行方法包括采用多个微带谐振器和经验技术。然而，其中一些方法缺乏全面性和系统的设计过程。用于具有特定截止频率的特定类型微带滤波器的设计步骤可能无法直接适用于开发具有不同截止频率的不同滤波器。相反，拥有可以根据滤波器阶数和响应特性生成滤波器结构的系统设计流程和软件，可以在设计 LC 滤波器时提供显着的优势。因此，如果我们能够使用传统方法设计具有所需响应的LC滤波器，然后将其转换为微带滤波器，我们就可以实现更系统的设计方法。本文提出了一种创新方法，将使用椭圆函数、巴特沃斯函数、切比雪夫函数和贝塞尔函数等经典函数获得的 LC 带通滤波器转换为微带带通滤波器。所设计的微带带通滤波器提供了简单且可重复的设计过程，并且具有通过采用特定缩放因子来调整工作频率的灵活性。这种适应性使得设计的微带带通滤波器适用于各种应用，包括卫星通信和 5G 系统。