In this study, the authors consider direction of arrival (DOA) estimation problem for a monostatic multiple-input multiple-output (MIMO) radar. A DOA algorithm MIMO radar using Capon and reduced-dimension transformation is proposed. The proposed can achieve lower computational complexity than algorithm, while not debasing performance angle estimation. has better signal parameters via rotational invariance techniques it close to Cramér–Rao bound (CRB). variance error CRB are derived....

In this work, we build a smooth bridge between coaxial waveguide and plasmonic with subwavelength periodically cylindrical radial grooves, to realize high-efficiency mode conversion conventional guided waves spoof surface plasmon polaritons in broadband. This consists of flaring connected metal wire corrugated gradient grooves. Experimental results the transmission reflection coefficients show excellent agreement numerical simulations. The proposed scheme can be extended readily other bands...

In this work, a bandwidth tunable microstrip band-stop filter is theoretically investigated and experimentally verified based on the concept of localized spoof surface plasmons. By placing conventional at bottom center symmetrically periodically corrugated metallic strip, which supports plasmons with single defect or series defects continuously variable dimensions, localization quasi-static field propagating along can be realized, thus facilitating control central frequency, bandwidth,...

In this work, we propose an optimized transition structure to realize smooth and high efficiency conversion from the guided wave supported by a conventional rectangular waveguide (CRW) domino plasmon polaritons (DPPs) plasmonic (DPW) vice versa in X-band (8.2GHz∼12.4GHz). This consists of two tapered CRWs connected gradient array with heights lateral widths. Experimental results S-parameters show excellent agreement simulations optimization scheme can be readily extended other bands....

Abstract In this work, we explore the existence of spoof surface plasmons (SSPs) supported by deep-subwavelength high-contrast gratings (HCGs) on a perfect electric conductor plane. The dispersion relation HCGs-based SSPs is derived analyt- ically combining multimode network theory with rigorous mode matching method, which has nearly same form and can be degenerated into that arising from metallic (MGs). Numerical simula- tions validate analytical an effective medium approximation also...

Abstract In this work, we report the existence of spoof localized surface plasmons (spoof-LSPs) arising with closed high contrast gratings (HCGs) at deep subwavelength scales, another platform for field localization microwave frequencies. The HCGs are in form a periodic array radial dielectric blocks permittivity around metal core supporting spoof-LSPs transverse magnetic (TM) form. Simulation results validate phenomenon and metamaterial approach is also given to capture all resonant...

Abstract In this article, we study the problem of four-dimensional angles estimation for bistatic multiple-input multiple-output (MIMO) radar with arbitrary arrays, and propose a joint two-dimensional direction departure (2D-DOD) arrival (2D-DOA) algorithm. Our algorithm is to extend propagator method (PM) angle in MIMO radar. The proposed does not require peak searching eigenvalue decomposition received signal covariance matrix, because this, it has low computational complexity. And can...

The properties of aviation fuel have a great influence on the performance oxygen-consuming inerting systems. Based establishment catalytic process, flow relationship each gas component flowing through reactor was derived. mathematical model concentration in phase tank established based mass conservation equation, and verified by performing experiments. results showed that type exerts considerably higher system compared to corresponding hollow fiber membrane system, relative magnitude rates...

The properties of aviation fuel have a great influence on the performance oxygen-consuming inerting systems. Based establishment catalytic process, flow relationship each gas component flowing through reactor was derived. mathematical model concentration in phase tank established based mass conservation equation, and verified by performing experiments. results showed that type exerts considerably higher system compared to corresponding hollow fiber membrane system, relative magnitude rates...

Abstract The distributed Goppa coded spatial modulation (DGC‐SM) scheme is proposed in cooperative scenarios. In the DGC‐SM scheme, relay chooses partial information from source by using idea of selection, and then re‐encodes selected information. At destination, a code obtained corresponding to each selection. order get best possible code, an optimal selection algorithm at relay. algorithm, all selections message sequences are considered, which results high complexity. Thus, another...

This paper discusses the problem of coherent direction arrival (DOA) estimation in a monostatic multi-input multi-output (MIMO) radar using single pulse, and proposes reduced dimension (RD)-estimation signal parameters via rotational invariance techniques (ESPRIT) algorithm. We reconstruct received data then utilise it to construct set Toeplitz matrices. After that, we use RD-ESPRIT obtain DOAs sources. The proposed algorithm is effective for angle based on has much better performance than...

This study investigates the topic of coherent angle estimation in bistatic multi‐input multi‐output (MIMO) radar, and derives a scheme for by exploiting parallel profile with linear dependencies (PARALIND) decomposition. The receive data can be mapped to PARALIND model, after which estimations transmit/receive directional matrices correlated matrix sources are all obtained through Finally, estimates direction departures arrivals least‐square principle. In contrast forward–backward spatial...

In this work, a smooth bridge between traditional microstrip line and two parallel metallic strips drilled with symmetrical grooves is designed to achieve ultra-wideband low-pass filtering characteristics. Numerical simulations on the S-parameters demonstrate good performance in whole pass band. This kind of plasmonic filter poses potential applications developing advanced integrated circuits microwave terahertz frequencies.

The distributed Goppa-coded generalized spatial modulation (DGC-GSM) scheme with the source, relay, and destination in cooperative communications is proposed, where source relay adopt different Goppa codes. codes have many advantages such as flexible codeword length, excellent code construction, easy encoding decoding complexity. At we select portions of information bits for further encoding. For each selection, constructs a channel code. To obtain best destination, propose optimal bit...

In this work, a band-pass plasmonic filter composed of traditional microstrip line and gradient metallic strip drilled with subwavelength holes is proposed. Numerical simulations on the S-parameters demonstrate good performance in pass band. This kind poses potential applications developing advanced integrated circuits microwave terahertz frequencies.