Download e-book for kindle: Artificial Transmission Lines for RF and Microwave by Ferran Mart?n

By Ferran Mart?n

ISBN-10: 1118487605

ISBN-13: 9781118487600

This e-book offers and discusses possible choices to boring transmission traces for the layout and implementation of complex RF/microwave elements in planar technology.

This publication is dedicated to the research, research and functions of man-made transmission traces regularly applied through a bunch line with ease converted (e.g., with modulation of transverse dimensions, with etched styles within the steel layers, etc.) or with reactive loading, on the way to in achieving novel equipment functionalities, improved functionality, and/or lowered dimension.

The writer starts off with an introductory bankruptcy devoted to the basics of planar transmission traces. bankruptcy 2 is concentrated on man made transmission strains according to periodic constructions (including non-uniform transmission traces and reactively-loaded lines), and offers a entire research of the coupled mode conception. Chapters three and four are devoted to synthetic transmission strains encouraged by means of metamaterials, or in line with metamaterial strategies. those chapters comprise the most useful implementations of such strains and their circuit types, and a large evaluate in their RF/microwave functions (including passive and lively circuits and antennas). bankruptcy five specializes in reconfigurable units according to tunable synthetic strains, and on non-linear transmission strains. The bankruptcy additionally introduces numerous fabrics and parts to accomplish tuning, together with diode varactors, RF-MEMS, ferroelectrics, and liquid crystals. ultimately, bankruptcy 6 covers different complex transmission strains and wave guiding constructions, similar to electroinductive-/magnetoinductive-wave strains, common-mode suppressed balanced strains, lattice-network synthetic traces, and substrate built-in waveguides.

Artificial Transmission traces for RF and Microwave functions offers an in-depth research and dialogue of synthetic transmission traces, together with layout instructions that may be necessary to researchers, engineers and students.

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51), gives αc = Rs Zo W 1 89 For microstrip lines, closed-form expressions for αc have been derived in [12]. Specifically, if W ≥ 2h27 αc = Rs 1 Zo h W 2 W + ln 2πe + 0 94 h π 2h × 1+ 2 W W πh + h W + 0 94 2h 1 90 h h 2h 1+t h +1 − + ln W πW t 1 + t 2h The conduction attenuation constants for microstrip lines satisfying W/h ≤ l/2π and l/2π < W/h ≤ 2 are reported in Ref. [12]. 89) in the limit of wide strips (W/h >> 1). 5 COMPARATIVE ANALYSIS OF PLANAR TRANSMISSION LINES The objective of this subsection is to briefly highlight some advantages and limitations of planar transmission lines from a comparative viewpoint.

Transmission lines with length l < λ/10), and based on λ/8, λ/4 and λ/2 lines. Some of the implementations reported in this Section will be later designed by means of artificial transmission lines in order to reduce circuit size, improve circuit performance, or achieve novel functionalities (or a combination of the previous beneficial aspects). 1 Semilumped Transmission Lines and Stubs and Their Application to Low-Pass and Notch Filters Let us start by considering the design of circuits on the basis of electrically small planar components, usually referred to as semilumped components.

13 [23]. Such element is known as stepped impedance shunt stub (SISS) and is described by a grounded series resonator. The narrow (high impedance) and wide (low impedance) transmission line sections correspond to the inductance and capacitance, respectively. 94) and the semilumped approximation requirement have been derived by considering the equivalent T-circuit model of a transmission line section, where the series and shunt impedance are calculated from the elements of the impedance or admittance matrix [1].

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