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This paper is aimed to solve the problem of wideband optimum power transferring between low impedance current output high speed integrated circuits and standard 50 Ohm load. High amplitude current output circuits face some implementation obstacles, as an instance, in the TSMC 0.18 um CMOS process, in order to make the current carrying metal trace withstand to almost 80–120 mA, the trace should have...
A wideband and flat gain distributed power amplifier using a GaN high electron mobility (HEMT) transistor has been designed. The frequency range covers 700 MHz to 4.5 GHz. The small signal gain has the average value of 10 dB. A reactive distributed shunt feedback structure is introduced and implemented by means of microstrip coupled lines. Also, fully distributed input and output impedance matching...
This paper presents design and measurement of a wide band-pass edge-coupled resistive impedance matching network, matching 12.5 ohm to 50 ohm having bandwidth of 2.4Ghz over the center frequency of 4Ghz. Edge-coupled filters are mostly used in wideband applications. This paper investigates design and implementation of a wide band edge coupled impedance matching networks. Impedance matching is accomplished...
In this study, we illustrate the design and implementation of a wideband microwave small-signal amplifier composed of mixed elements. The design is based on Simplified Real Frequency Technique (SRFT). A design of low power amplifier circuit is completed and its simulations are performed in success. The circuit is designed with lumped elements, however, some of the lumped elements are converted to...
Design of a UWB (Ultra Wideband) microstrip patch antenna to operate in the first channel of the UWB standard and a bandpass (BP) UE (Unit Element) microstrip filter (BPUEF) for this antenna are studied and presented with promising experimental results. A typical UE BP filter is a lossless 2-port network which is formed with certain number of cascade connected commensurate transmission lines. Based...
In this paper, design and simulation of a wideband matching network for a broadband V-shaped square monopole antenna is presented. Matching network design is unavoidable in most cases even vital to facilitate a maximally flat power transfer gain for an antenna. In the work, the matching network design is done for a particular square monopole antenna with V-shaped coupling element that has essentially...
In practical applications, compensating the changes in transistors input and output impedances due to environmental and thermal effects requires tunable matching networks. Having tunability property is critical in manufacturing as well, since manufacturing errors may be compensated by post-production tuning. In this paper, a 12–50 Ω impedance transforming filter over 800–2200 MHz frequency band is...
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