EM/Circuit Mixed Simulation Technique for an Active Antenna

Nashef, Georges Zakka El; Torrès, François; Mons, Sébastien; Reveyrand, Tibault; Monédière, Thierry; Ngoya, Edouard; Quéré, Raymond

doi:10.1109/lawp.2011.2141972

Cited by 23 publications

(17 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results are shown in Figure 1F, G. The resonance of the S 11 is about 3.05 GHz that was corrected in comparison to the previous circuit with 3.16 GHz resonance. The impedance bandwidth of input port is from 2.88 to 3.34 GHz for |S 11 | < 215 dB. The S 21 and S 31 are 214.2 and 26.1 dB, respectively.…”

Section: Des I G N Con F Ig Ura Ti On and Res Ul Ts Of Ne W Af Nmentioning

confidence: 99%

Frequency-dependent behavioral-model-based nonlinear analysis and design of a low-profile transmit active phased array antenna

Zaker

Abdipour

Tavakoli

et al. 2018

Int J RF Microw Comput Aided Eng

View full text Add to dashboard Cite

Design and behavioral‐model‐based nonlinear analysis of a 3‐GHz active‐phased array antenna (APAA) are presented. Four nonlinear power amplifiers are employed in the output ports of the feeding network (FN) and analyzed based on a 5‐order polynomial model with frequency‐dependent coefficients. The FN is based on 4‐port new Gysel power dividers and combiners arranged in such a way to feed the array with Gaussian‐like amplitude and in‐phase distributions. Beam steering capability is obtained in 2 directions by a new technique including a phase shifter and an amplitude controller (AC). The features result in a low‐profile APAA whose design and fabrication complexity and cost are reduced. Single and 2‐tone power tests are performed to develop analytical expressions in nonlinear region for array factor as a function of the model, FN and the phase and ACs. A similar system with frequency‐independent model is also analyzed for comparison in terms of scan loss, beamwidth, side‐lobe level, beam position, and gain. A microstrip array antenna including the power amplifiers, pre‐amplifiers, AC, delay‐line‐based phase shifters and Gysels is fabricated and measured. The simulation results at the single and dual tones and the intermodulation products are presented which have a good agreement with the measurements.

show abstract

Section: Des I G N Con F Ig Ura Ti On and Res Ul Ts Of Ne W Af Nmentioning

confidence: 99%

Frequency-dependent behavioral-model-based nonlinear analysis and design of a low-profile transmit active phased array antenna

Zaker

Abdipour

Tavakoli

et al. 2018

Int J RF Microw Comput Aided Eng

View full text Add to dashboard Cite

show abstract

“…where A 1i (n) and A 2i (n) are the two incident wave phasors, and B 21 (n) is the corresponding scattered wave. PHD models have been used to predict radiation patterns of active antenna arrays [4], [10]. However, since they are quasi-static and, as such, do not consider the history of the input signals, they are not suitable for wideband signals.…”

Section: B Reduced Dual-input Pa Modelsmentioning

confidence: 99%

“…In [4] and [10] a hardware oriented approach is used to predict radiation patterns of active antenna arrays with direct connections between PAs and antennas. In both papers, dualinput PA models based on polyharmonic distortion (PHD) models (nonlinear scattering functions) [11], and antenna Sparameters are used to investigate the effects of mutual antenna coupling and mismatches on the behavior of PAs and on the overall performance of a TX antenna array.…”

mentioning

confidence: 99%

Prediction of Nonlinear Distortion in Wideband Active Antenna Arrays

Hausmair

Gustafsson

Sánchez-Pérez

et al. 2017

IEEE Trans. Microwave Theory Techn.

View full text Add to dashboard Cite

In this paper we propose a technique for comprehensive analysis of nonlinear and dynamic characteristics of multiantenna transmitters (TXs). The analysis technique is enabled by the development of a Volterra series-based dual-input model for power amplifiers (PAs), which is capable of taking into account the joint effects of PA nonlinearity, antenna crosstalk and mismatch for wideband modulated signals. By combining multiple instances of the PA model with linear dynamic antenna simulations we develop the analysis technique. The proposed method allows the prediction of the output signal of every antenna in an arbitrarily sized TX array, as well as the total far-field radiated wave of the TX for any input signal with low computational effort. A 2.12 GHz four-element TX demonstrator based on GaAs PAs is implemented to verify simulation results with measurements. The proposed technique is a powerful tool to study hardware characteristics, as for example the effects of antenna design and element spacing. It can be used in cases where experiments are not feasible, and thus aid the development of next generation wireless systems. Index Terms-Active antenna array, antenna crosstalk, mismatch, MIMO transmitter, power amplifier modeling I. INTRODUCTION Wireless communication systems face a steadily growing demand for higher data rates. However, the radio spectrum is a limited resource. Multiple-input multiple-output (MIMO) systems can be utilized to increase spectral efficiency [1]. For this reason, modern wireless telecommunication standards, such as LTE and Wi-Fi, include the use of multiple antennas. Largescale antenna systems, which comprise hundreds of antennas, have become a hot topic in the research community [2]. The use of several transmit paths in a transmitter (TX) increases system complexity and cost [3]. Therefore, integrated solutions, as have been used in, e.g., radar applications for many years, are preferred. Such integrated designs avoid costly components like bulky isolators between power amplifiers This research has been carried out in GigaHertz Centre in a joint project financed by the

show abstract

“…Each channel of a beamforming IC may include a large number of transistors interacting with adjacent channels in a large array configuration. For these situations, combining PA behavioral models with antenna characteristics is the key to a fast and accurate evaluation of transmitters [14]. A variety of PA behavioral models suitable for MIMO and phased array applications has been addressed in the literature [14]- [22].…”

Section: Introductionmentioning

confidence: 99%

“…For these situations, combining PA behavioral models with antenna characteristics is the key to a fast and accurate evaluation of transmitters [14]. A variety of PA behavioral models suitable for MIMO and phased array applications has been addressed in the literature [14]- [22]. However, only a limited number of studies have incorporated PA models into active antenna array simulations for evaluating transmitter performance [14], [18]- [22].…”

Section: Introductionmentioning

confidence: 99%

Hybrid Beamforming Transmitter Modeling for Millimeter-Wave MIMO Applications

Taghikhani¹

2020

Preprint

View full text Add to dashboard Cite

<div>Hybrid digital and analog beamforming is an</div><div>emerging technique for high-data-rate communication at</div><div>millimeter-wave (mm-wave) frequencies. Experimental evaluation</div><div>of such techniques is challenging, time-consuming, and costly.</div><div>This article presents a hardware-oriented modeling method for</div><div>predicting the performance of an mm-wave hybrid beamforming</div><div>transmitter. The proposed method considers the effect of active</div><div>circuit nonlinearity as well as the coupling and mismatch in the</div><div>antenna array. It also provides a comprehensive prediction of</div><div>radiation patterns and far-field signal distortions. Furthermore,</div><div>it predicts the antenna input active impedance, considering</div><div>the effect of active circuit load-dependent characteristics. The</div><div>method is experimentally verified by a 29-GHz beamforming</div><div>subarray module comprising an analog beamforming integrated</div><div>circuit (IC) and a 2 × 2 subarray microstrip patch antenna.</div><div>The measurement results present good agreement with the</div><div>predicted ones for a wide range of beam-steering angles. As a</div><div>use case of the model, far-field nonlinear distortions for different</div><div>antenna array configurations are studied. The demonstration</div><div>shows that the variation of nonlinear distortion versus steering</div><div>angle depends significantly on the array configuration and beam</div><div>direction. Moreover, the results illustrate the importance of</div><div>considering the joint operation of beamforming ICs, antenna</div><div>array, and linearization in the design of mm-wave beamforming</div><div>transmitters.</div>

show abstract

EM/Circuit Mixed Simulation Technique for an Active Antenna

Cited by 23 publications

References 3 publications

Frequency-dependent behavioral-model-based nonlinear analysis and design of a low-profile transmit active phased array antenna

Frequency-dependent behavioral-model-based nonlinear analysis and design of a low-profile transmit active phased array antenna

Prediction of Nonlinear Distortion in Wideband Active Antenna Arrays

Hybrid Beamforming Transmitter Modeling for Millimeter-Wave MIMO Applications

Contact Info

Product

Resources

About