A miniaturized harmonic suppressed power amplifier integrated with lowpass filter for long term evolution application

Roshani, Saeed; Hayati, Mohsen; Setayeshi, Saeed; Roshani, Sobhan; Mohamadpour, Golshan

doi:10.1007/s10470-016-0816-z

Cited by 20 publications

(6 citation statements)

References 12 publications

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“…(1) The probe electromagnetic signal emission has been enhanced. The miniaturized power amplifier designed by Roshani et al [36] has enhanced the emitting signals of the tracer probe without excessively increasing the probe size. (2) The robustness of the wire and mobility of the probe has been enhanced.…”

Section: Tracer Probe Methodsmentioning

confidence: 99%

Current Trends and Perspectives of Detection and Location for Buried Non-Metallic Pipelines

Zhang

Tian

et al. 2021

Chin. J. Mech. Eng.

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Buried pipelines are an essential component of the urban infrastructure of modern cities. Traditional buried pipes are mainly made of metal materials. With the development of material science and technology in recent years, non-metallic pipes, such as plastic pipes, ceramic pipes, and concrete pipes, are increasingly taking the place of pipes made from metal in various pipeline networks such as water supply, drainage, heat, industry, oil, and gas. The location technologies for the location of the buried metal pipeline have become mature, but detection and location technologies for the non-metallic pipelines are still developing. In this paper, current trends and future perspectives of detection and location of buried non-metallic pipelines are summarized. Initially, this paper reviews and analyzes electromagnetic induction technologies, electromagnetic wave technologies, and other physics-based technologies. It then focuses on acoustic detection and location technologies, and finally introduces emerging technologies. Then the technical characteristics of each detection and location method have been compared, with their strengths and weaknesses identified. The current trends and future perspectives of each buried non-metallic pipeline detection and location technology have also been defined. Finally, some suggestions for the future development of buried non-metallic pipeline detection and location technologies are provided.

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Section: Tracer Probe Methodsmentioning

confidence: 99%

Current Trends and Perspectives of Detection and Location for Buried Non-Metallic Pipelines

Zhang

Tian

et al. 2021

Chin. J. Mech. Eng.

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“…PAs are high power-consuming elements in communications. Therefore, efficiency is an important factor in amplifier design [1][2][3][4]. Switching power amplifiers are good choices for high-efficiency applications.…”

Section: Introductionmentioning

confidence: 99%

Using an ANN Approach to Estimate Output Power and PAE of A Modified Class-F Power Amplifier

Jamshidi

Roshani

Talla

et al. 2020

2020 International Conference on Applied Electronics (AE)

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In this paper, an efficient Class-F power amplifier (PA) is designed, simulated and modeled. This type of amplifier has nonlinear behaviors and uses tuning and controlling harmonics as the most important mechanism to increase efficiency. Feedforward artificial neural network (ANN) model is proposed to predict and estimate the nonlinear output of the power amplifier. The designed amplifier operates at 900 MHz, with 18 dB gain and 70 %Power-Added Efficiency (PAE). In the design process, the artificial neural network model is used to predict PAE and output power parameters as a function of input power, drain voltage and gate voltage of the applied transistor (DC Biasing voltages). The obtained mean relative errors (MREs) are less than 0.03% and 0.09% for the predicted output power and PAE parameters.

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“…Microstrip low-pass filters (LPFs) are important passive elements for the attenuation of unwanted signals and noise in communication systems [1]. LPFs are widely used to suppress unwanted harmonics in active and passive devices such as power dividers, couplers [2][3][4], and amplifiers [5,6]. Therefore, several studies have been reported recently to improve LPF parameters, with various structures and methods to move these parameters closer to the ideal values.…”

Section: Introductionmentioning

confidence: 99%

Compact microstrip lowpass filter with ultrasharp response using a square-loaded modified T-shaped resonator

Pirasteh¹,

Roshani²,

Roshani³

2018

Turk J Elec Eng & Comp Sci

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A miniaturized lowpass filter (LPF) with ultrasharp response, good figure of merit (FOM), and simple structure is proposed. The designed structure is fabricated and measured with a 2.9 GHz cutoff frequency. The proposed LPF consists of high impedance lines that are loaded by three similar resonators and two uniform suppressing cells. The filter size is only 0.08 × 0.23 λ g, which indicates small circuit size. The proposed design exhibits good features, such as an ultrasharp roll-off rate of about 1609 dB/GHz and a good FOM of 162,820. The insertion loss of the proposed LPF is less than 0.14 dB in the passband. With these excellent obtained specifications and flat group delay, this structure can be used in wireless antennae.

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A miniaturized harmonic suppressed power amplifier integrated with lowpass filter for long term evolution application

Cited by 20 publications

References 12 publications

Current Trends and Perspectives of Detection and Location for Buried Non-Metallic Pipelines

Current Trends and Perspectives of Detection and Location for Buried Non-Metallic Pipelines

Using an ANN Approach to Estimate Output Power and PAE of A Modified Class-F Power Amplifier

Compact microstrip lowpass filter with ultrasharp response using a square-loaded modified T-shaped resonator

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