In every country on the globe, there are still actions to perform in order improve buildings' energy efficiency, particularly regions with severe weather conditions. Since walls heat-dissipating elements building, designing them effectively can help reduce consumption of HVAC (heating, ventilation, and air-conditioning) systems, which notorious for using excessive amounts energy. The use self-insulating construction materials relatively high thermal resistance low transmittance is most...

Low noise amplifier (LNA) constitutes one of the essential component in wireless communication systems. It is used especially for designing different types receivers. The main function LNA to provide sufficient gain overcome other blocks. Amplifier design requires a matching circuit impedance have low noise, achieve maximum power transfer and minimum reflection. This paper presents that operates over frequency range [9-13] GHz adopts quarter-wave transformers technique. Simulation synthesis...

The low noise amplifier is one of the basic functional blocks in communication systems. main interest LNA at input analog processing chain to amplify signal without adding significant noise. In this work, we have modeled a for radar reception systems operating around 11 GHz, using technique impedance transformations with Smith chart utility. type transistor used is: HEMT AFP02N2-00 Alpha Industries®. results show that has gain greater than 20 dB, figure less 2 and output reflection...

This work presents a broadband power amplifier in S-band microstrip technology. The proposed is modeled with single-stage architecture based on field effect transistor ATF13786 of Agilent Technologies (hp) ® . used has been polarized transmission lines and it adapted matching networks the form λ /4 transformers filters at input output. studied optimized using Advanced Design System (ADS ) software. simulation results output S parameters show excellent characteristics satisfactory gain...

In this paper, we present a broadband impedance matching technique for the design of microwave low noise amplifiers. This is based on use interdigital filters and quarter-wave transformers. The type transistors used to model amplifier HEMT (AFP02N2-00, Alpha Industries®). found results show that unconditionally stable with satisfactory gain in order 20 dB good across all band interest [10-12] GHz. modeled work can be integrated radar satellite reception systems.

Recommendation algorithms (RS) used by social media, like YouTube, significantly shape our information consumption across various domains, especially in healthcare. Hence, algorithmic auditing becomes crucial to uncover their potential bias and misinformation, particularly the context of controversial topics abortion. We introduce a simple yet effective sock puppet approach investigate how YouTube recommends abortion-related videos individuals with different backgrounds. Our framework allows...

This work introduces a high-efficiency power amplifier (PA) with broadband capabilities, incorporating novel multi-harmonic tuning network (HTN) based on metamaterials. The distinctive feature of this approach lies in its ability to simultaneously manipulate the second and third harmonic impedances using straightforward metamaterial-based multi-HTN integrated into output-matching network. Through employment methodology, PA attains remarkable efficiency by optimizing positions both...

In this paper, we have modeled a low-noise amplifier that adapted using multisection filter at the input, distributed-element bandpass coupled-resonator output, and third notch for interference rejection. Results show is unconditionally stable over entire [1.8-3] GHz band. addition, gain satisfactory, reflection coefficients S <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">11</inf> xmlns:xlink="http://www.w3.org/1999/xlink">22</inf> input...

This paper presents a broadband, highly efficient filtering power amplifier (FPA) with excellent integrated characteristics. The proposed technique is based on the use of an asymmetrical open-circuit coupled-lines bandpass filter (BPF), which plays role input matching network and output network. not only greatly improves response, but also second harmonic rejection performance. To demonstrate this concept, broadband PA-filter component designed implemented, employing Cree 10W GaN HEMT....

In this paper, we have modeled a low noise amplifier that adapted by band pass coupled resonator filters, using two adaptation techniques, the first is based on filters distributed elements and second combination of localized elements. We used kinds transistors are FET HEMT. The obtained results showed unconditionally stable in whole [10-12] GHz. Moreover, gain satisfactory. reflection coefficients input output S11 S22 low. work can be integrated radar systems satellite transmission...

Radio Frequency Identification (RFID) is a technology mainly used for the identification of labeled objects and to follow their location. A RFID tag composed by integrated circuits IC, antennas. Antennas transceiver system generally WIFI/RFID application are microstrip type. In this article, we have compared two antennas (rectangular circular) powered inset feed line with 2.45 GHZ resonance frequency. Then, rectangular antenna's array radiating elements resonating on different frequencies...

This paper describes a procedure for designing broadband low noise amplifier X-Band applications. The design and implementation is based on HEMT transistors AFP02N2-00 of Alpha Industries®. matching circuit used modeling the microwave quarter-wave transformers impedance technique associated to combline bandpass filter. proposed implemented substrate epoxy FR4 with central frequency 11GHz fractional bandwidth 0.18% designed be in radar reception systems. results show that LNA unconditionally...