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This paper proposes a dynamic game approach to distributed energy resource (DER) expansion planning from investors’ viewpoint with incomplete information. An innovative framework is proposed here to encounter different aspects of DER planning. Wind turbines, gas engines and combined heat and power (CHP) are considered as DERs in this study. For reducing the risk of investment, some support schemes are proposed for wind and CHP. Furthermore, strategic uncertainty of rival behavior as one of the uncertainties has been modeled in electricity market using incomplete information game theory. By the proposed model, the dynamic behaviors of DERs investors and the effects of regulatory intervention on expansion planning are analyzed. The proposed model is capable of evaluating the mutual effects of supporting policies on penetration rate of multi-resources simultaneously. The effectiveness of the proposed model is illustrated through implementing on a test system.

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Sidelobe blanking (SLB) is a technique employed in radar signal processing to inhibit detection when an unwanted signal enters the radar receiver through antenna sidelobes. For this purpose, an auxiliary antenna and receiver channel are used in the radar system. Comparing the main antenna and auxiliary antenna signal strength, a decision is made for blanking the main channel output. In this paper, a new SLB structure using multiple auxiliary antenna is introduced. Then, based on detection theory, two sub-optimal methods are proposed. These methods use the in-phase/quadrature-phase (I/Q) component of the received signal. Computer simulations confirm the superiority of the proposed methods from different points of view.

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This paper presents a new variable gain low noise amplifier (VG-LNA) for ultra-wideband (UWB) applications. The proposed VG-LNA uses a common-source (CS) with a shunt-shunt active feedback as an input stage to realize input matching and partial noise cancelling. An output stage consists of a gain-boosted CS cascode and a gain control circuit that moves the high resonant frequency to higher frequencies and provides flatness gain. The direct power gain (S₂₁) is continuously controlled without significant degradation in the input return loss (S₁₁) and noise figure. The proposed VG-LNA is designed and simulated using RF-TSMC 0.18 μm CMOS technology by Advanced Design System (ADS). Simulation results show a maximum flat power gain (S₂₁) of 14 dB with a noise figure (NF) lower than 3.6 dB and an input impedance matching (S₁₁) less than –10 dB over the wide bandwidth of 3.5 to 13.5 GHz. Its power consumption is 12 mW with low power supply of 0.9 V. In addition, the power gain ranges from 7 to 14 dB at the center frequency of 8.5 GHz.

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In this paper, the analysis, simulation and fabrication of high-efficiency broadband parallel-circuit Class-E power amplifier (PA) for satellite communication systems has been presented. The PA’s broadband characteristics are achieved through analysis of the load network using double reactance compensation technique, second and third harmonic control circuits. The proposed circuit has been simulated by ADS 2014 and simulated results by ideal and real elements have been evaluated. A high power LDMOS transistor AFT09MS007N was used as an active device. Then for validation, a prototype of the proposed PA has been fabricated and tested. The measured results show that the drain efficiency (DE) and power added efficiency (PAE) are more than 75% and 69% over 400-460 MHz frequency range, respectively. In addition, the maximum values DE of 83% and PAE of 75% for input power of 27 dBm and drain voltage of 12 V has been obtained. Finally, the simulated and measured results are in a good agreement.
 

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In this paper, a microstrip bandpass filter based on terminated three coupled lines and trapezoidal patches with good performance has been presented. Firstly, the analytical results of the proposed resonator based on the odd and even-mode analysis have been done. Then, the good performance for the filter using the proposed resonator and an open stub with proper dimension has been obtained. Meanwhile, the variation of the frequency response of the filter with different substrates and coupled lines has been investigated. One type of bandpass filter based on terminated coupled line structure is theoretically analyzed, simulated, and measured. The center frequency of 2.36 GHz, the fractional bandwidth (FBW) of about 60%, the low insertion loss of 0.25 dB, and the return loss better than 22 dB are obtained. Also, a flat group delay lower than 1.2 ns is achieved. Experimental and simulated results are in good agreement.
 

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In this article, the design and simulation of a microwave low-pass filter using semi-circular and T-shaped resonators, open circuit stubs, and using the modern SISL structure are presented. This filter is simulated on Rogers 5880 substrates using ADS and HFSS software. The designed filter has a very low insertion loss of 0.05 dB, a return loss of 18 dB, a cutoff frequency equal to 6.4 GHz, an attenuation level better than 22 dB, suitable selectivity, and wide stop bandwidth. The special feature of this filter, which distinguishes it from conventional filters, is the lack of a protective box for radiation losses and easy surface installation, which is very effective in reducing the weight and final dimensions of the structure.