Gao, Y; Shang, X; Li, L; Guo, C; Wang, Y (2022) Integrated Filter Amplifiers: a comprehensive review. IEEE Microwave Magazine, 23 (6). pp. 57-75.
Full text not available from this repository.Abstract
Amplifiers and filters are essential components in microwave systems. An amplifier is used to increase the signal strength, and it is usually cascaded by filters for frequency selection or harmonic rejection. Their functionalities require precise design of the individual parts as well as how they are connected. The common approach is to make individual components with a system impedance that is usually 50 W. Rather than the conventional topology, where the amplifiers, matching networks and filters are separate, the amplifier and the filters can be integrated, allowing the input matching network (IMN) and the output matching network (OMN) of the transistor to be removed. In this approach, the filters are designed to replace the matching networks whose elements can be on-chip lumped circuits or planar structures. Thus, loss reduction can be achieved through two aspects: first, the ohmic and dielectric loss of the microstrip matching circuitry can be minimized; secondly, the insertion loss and risk of multiple reflections associated with the port-to-port interconnection can be avoided. Apart from reduced loss, such integrated filter-amplifiers also have appealing advantages, such as significantly reduced size and improved performance in terms of matching and efficiency over the conventional approach based on individually cascaded components. These advantages are particularly attractive to millimeter-wave and terahertz (THz) applications, where the insertion loss of the matching network is usually a significant concern. In this paper, we will review the recent advances of the integrated filter-amplifiers with featured techniques and examples being presented.
Item Type: | Article |
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Subjects: | Electromagnetics > RF and Microwave |
Divisions: | Electromagnetic & Electrochemical Technologies |
Identification number/DOI: | 10.1109/MMM.2022.3155034 |
Last Modified: | 20 Feb 2023 09:48 |
URI: | http://eprintspublications.npl.co.uk/id/eprint/9654 |
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