Artificial Transmission Lines for RF and Microwave Applications

Martín, Ferrán

doi:10.1002/9781119058403

Cited by 160 publications

(155 citation statements)

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“…Their design consists in a shielded central core separated from a shield by a dielectric material [4]. More complex transmission line designs can be realized with metamaterials [1,5].…”

Section: Pacs Numbersmentioning

confidence: 99%

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Reconfigurable transmission lines with memcapacitive materials

Pershin

Slipko

Ventra

2015

Applied Physics Letters

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We study transmission lines made of memory capacitive (memcapacitive) materials. The transmission properties of these lines can be adjusted on demand using an appropriate sequence of pulses.In particular, we demonstrate a pulse combination that creates a periodic modulation of dielectric properties along the line. Such a structure resembles a distributed Bragg reflector having important optical applications. We present simulation results demonstrating all major steps of such a reconfigurable device operation including reset, programming and transmission of small amplitude signals. The proposed reconfigurable transmission lines employ only passive memory materials and can be realized using available memcapacitive devices. PACS numbers:Transmission lines are useful and ubiquitous structures developed for a wide range of applications ranging from the transmission of radio frequency and microwave signals [1] to coupling of superconducting qubits [2,3], to name a few. In particular, coaxial cables are transmission lines for radio frequency signals. Their design consists in a shielded central core separated from a shield by a dielectric material [4]. More complex transmission line designs can be realized with metamaterials [1,5].In general, transmission lines are built to support specific transmission characteristics (such as the frequency range, etc.) that are fixed once and for all by their design. In other words, in order to change, e.g., their frequency range one needs to change the materials (or structure) of the line itself. It would be very beneficial if instead we could reconfigure the transmission properties on demand by a simple application of appropriate input signals. This way, a single transmission line could perform different tasks functioning, for example, as a delay line, band-stop filter, etc.In this paper, we propose precisely this concept by introducing reconfigurable transmission lines based on memcapacitive materials [6,7]. Such lines could be realized in practice by, e. g., partially (or entirely) replacing the usual dielectric insulator in a coaxial cable (or other transmission line realization) with a memcapacitive material, namely, a material whose relative permittivity depends on the history of signals applied (see Fig. 1(a) for a conceptual image) [7]. Using an appropriate combination of pulses, one can pre-program the properties of memcapacitive materials on demand, and thus select the function that the transmission line performs. Moreover, our idea could be realized as an electronic circuit involving memcapacitive devices, resistors and inductors. In fact, the simulations presented below are based on a circuit model of the transmission line [1]. Therefore, our results are applicable to both the line itself and its electronic circuit realization.Let us consider the transmission line positioned along the y-axis as shown in Fig. 1(a). We assume that the electromagnetic field of the line satisfies the quasistationarity conditions with respect to the transverse dimensions of the line (in partic...

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“…Their design consists in a shielded central core separated from a shield by a dielectric material [4]. More complex transmission line designs can be realized with metamaterials [1,5].…”

Section: Pacs Numbersmentioning

confidence: 99%

“…Their design consists in a shielded central core separated from a shield by a dielectric material [4]. More complex transmission line designs can be realized with metamaterials [1,5].In general, transmission lines are built to support specific transmission characteristics (such as the frequency range, etc.) that are fixed once and for all by their design.…”

mentioning

confidence: 99%

Reconfigurable transmission lines with memcapacitive materials

Pershin

Slipko

Ventra

2015

Applied Physics Letters

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“…Recently, artificial plasmonic metamaterials have been reported to generate the spoof SPPs (SSPPs) that can propagate surface waves within the same features as SPPs in the lower -frequency band, thus significantly extending the application of SPPs from optical regimes to microwave fields 10 . Metamaterials are periodic (or quasi-periodic) structures with unit cells consisting of a combination of metals and/or dielectrics 11 . A significant benefit of this metamaterial is that the asymptotic frequency and dispersion characteristics of the SSPPs can be regulated by the geometrical parameters of the unit element [12][13] .…”

Section: Introductionmentioning

confidence: 99%

“…This method is better in respect of sub wavelength confinement. One main aspect is that different to conventional lines, the metamaterial transmission line structure shows frequency -dependent characteristic impedance, which is very useful in tunable filter design 11 . SSPPs have inherited most of the interesting features of optical SPPs, such as the field confinement, slow wave propagation and the non-diffraction limit.…”

Section: Introductionmentioning

confidence: 99%

Design, Analysis and Characterisation of Spoof Surface Plasmon Polaritons based Wideband Bandpass Filter at Microwave Frequency

Mittal

Pathak

2018

Def. Sc. Jl.

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This paper presents the wideband bandpass filter (BPF) in the microwave frequency domain. The realisation approach is based on spoof surface plasmon polaritons (SSPPs) phenomenon using plasmonic metamaterial. A novel unit cell is designed for filter design using an LC resonator concept. Then SSPPs BPF is realised using an optimised mode converter and five unit cells. This paper includes a brief design detail of the proposed novel unit cell. The passband of BPF is achieved at approximately 1.20 -5.80 GHz, 3dB bandwidth is tentatively 4.60 GHz and the insertion loss is less than 2 dB approximately over the passband. The overall dimension of fabricated filter is (90 x 45) mm. A basic schematic of transmission line representation is also proposed to evaluate the BPF structure.

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“…본 논문은 기존 링-공진기를 이용한 대역통과 여파기 의 한계점인 소형화 및 고조파로 인한 문제점을 해결하 기 위하여 임의로 특성 임피던스와 전기적 길이를 정할 수 있고, 저역통과 특성을 지닌 인공전송선로(Artificialtransmission-Line: ATL) [15] 중 LUC(Low-pass filter Unit Cell) [12] 을 이용한 이중모드 링-공진기 대역통과 여파기를 제 안한다.…”

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The Dual-Mode Ring-Resonator Bandpass Filter Using Artificial-Transmission-Lines

Sim

Hwang²

2016

The Journal of Korean Institute of Electromagnetic Engineering

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This paper presents dual-mode ring-resonator bandpass filter using LUC of artificial-transmission-lines. The conventional ring-resonator bandpass filter has limitation in miniaturization because the conventional ring-resonator is based on a one wavelength operation, and problem due to undesire harmonics. The ring-resonator bandpass filter is miniaturized and show higher order mode rejection by configuring a ring-resonator with LUC of artificial-transmission-lines. The two-stage bandpass filter is designed and fabricated with a ring-resonator and input/output interdigital coupled line. A fabricated filter shows dual-mode, rejection of whole ultra wide band, sharp skirt characteristics and has ring area reduced by 60 % compared to the conventional ring-resonator bandpass filter.

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Artificial Transmission Lines for RF and Microwave Applications

Cited by 160 publications

References 0 publications

Reconfigurable transmission lines with memcapacitive materials

Reconfigurable transmission lines with memcapacitive materials

Design, Analysis and Characterisation of Spoof Surface Plasmon Polaritons based Wideband Bandpass Filter at Microwave Frequency

The Dual-Mode Ring-Resonator Bandpass Filter Using Artificial-Transmission-Lines

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