Design and fabrication of a high gain, broadband microwave limiting amplifier module

Download

index.pdf

Date

2011

Author

Kılıç, Hasan Hüseyin

Metadata

Show full item record

Item Usage Stats

327
views

213
downloads

Microwave limiting amplifiers are the key components of Instantaneous Frequency Measurement (IFM) systems. Limiting amplifiers provide constant output power level in a wide input dynamic range and over a broad frequency band. Moreover, limiting amplifiers are high gain devices that are used to bring very low input power levels to a constant output power level. Besides, limiting amplifiers are required to provide minimum small signal gain ripple in order not to reduce the sensitivity of the IFM system over the operating frequency band. In this thesis work, a high gain, medium power, 2-18 GHz limiting amplifier module is designed, simulated, fabricated and measured. First, a 3-stage cascaded amplifier with 27 dB small signal gain is designed and fabricated. The 3-stage amplifier is composed of a novel cascaded combination of negative feedback and distributed amplifiers that provides the minimum small signal gain ripple and satisfactory input and output return losses inside 2-18 GHz frequency band. Then, the designed two 3-stage amplifiers and one 4-stage amplifier are cascaded to constitute a limiting amplifier module with minimum 80 dB small signal gain. The designed 10-stage limiting amplifier module also includes an analog voltage controllable attenuator to be used for compensating the gain variations resulting from temperature changes. The fabricated 10-stage limiting amplifier module provides 20 +/- 1.2 dBm output power level and excellent small signal gain flatness, +/- 2.2 dB, over 2-18 GHz frequency range.

Subject Keywords

Amplifiers (Electronics)

URI

http://etd.lib.metu.edu.tr/upload/12613616/index.pdf
https://hdl.handle.net/11511/20962

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Development of a tuner topology for multiharmonic matching and implementation on tunable dual band power amplifier design Kılıç, Hasan Hüseyin; Demir, Şimşek; Department of Electrical and Electronics Engineering (2018) In this thesis work, the effect of multi-harmonic load matching on improving the efficiency of power amplifiers is investigated. Techniques of efficient power amplifier design are discussed and analyzed in terms of multi-harmonic matching. Several circuit topologies are evaluated for multi-harmonic matching by discussing the advantages and the limitations. Specifically, a detailed multi-harmonic analysis of the triple stub topology is presented. The already-known single frequency impedance matching capabili...
Development of a pc numerical system for high voltage sphere gap control Kasap, Onur; Hızal, Mirzahan; Department of Electrical and Electronics Engineering (2005) In this thesis, a high precision motion and position control system has been developed and applied to a high voltage sphere gap control and measurement system. The system is able to support up to 3-axes position and motion control. The control system includes a microcontroller card, three DC servo motor driver cards and a data storage unit. To provide communication between computer and motion control system, the Universal Serial Bus (USB) port is used. The microcontroller card is equipped with an USB interf...
Detection of high order M-ARY QAM symbols under transmitter nonlinearities Gülgün, Ziya; Yılmaz, Ali Özgür; Department of Electrical and Electronics Engineering (2018) We will investigate the nonlinear effects of power amplifiers on large constellation Quadrature Amplitude Modulation (QAM) in this study. A more than potential feat to enhance transmission rates in next generation wireless networks is high order QAM along with mm-wave transmission. Meanwhile, different types of nonlinearities in the transmitter side may hamper the transmitter rate and decrease receiver performances. From literature, outermost constellation points of QAM schemes are usually more adversely af...
Design and implementation of microwave lumped components and system integration using MEMS technology Temoçin, Engin Ufuk; Akın, Tayfun; Department of Electrical and Electronics Engineering (2006) This thesis presents the design and fabrication of coplanar waveguide to microstrip transitions and planar spiral inductors, and the design of metal-insulator-metal capacitors, a planar band-pass, and a low-pass filter structures as an application for the inductors and capacitors using the RF MEMS technology. This thesis also includes a packaging method for RF MEMS devices with the use of “benzocyclobutene” as bonding material. The transition structures are formed by four different methods between coplanar ...
Analysis and design of passive microwave and optical devices using the multimode interference technique Sunay, Ahmet Sertaç; Birand, Mehmet Tuncay; Department of Electrical and Electronics Engineering (2005) The Multimode Interference (MMI) mechanism is a powerful toool used in the analysis and design of a certain class of optical, microwave and millimeter wave devices. The principles of the MMI method and the self-imaging principle is described. Using this method, NXM MMI couplers, MMI splitter/combiners are analyzed. Computer simulations for illustrating the "Multimode Interference Mechanism" are carried out. The MMI approach is used to analyze overmoded 'rectangular metallic' and 'dielectric slab' type of wa...

Citation Formats

H. H. Kılıç, “Design and fabrication of a high gain, broadband microwave limiting amplifier module,” M.S. - Master of Science, Middle East Technical University, 2011.