MATLAB Antenna Toolbox Users Guide (The MathWorks, Inc.) (z-library.sk, 1lib.sk, z-lib.sk)

【One-Line Pitch】 A practical, example-driven manual for engineers who want to model, analyze, and optimize antennas and arrays in MATLAB without building every geometry from scratch. Best suited to RF/antenna practitioners and students who already know basic electromagnetics and want working code patterns. 【Book Arc】 - **Opening (~0%–10%)**: Establishes antenna fundamentals in toolbox terms — return loss and bandwidth, VSWR as an impedance-matching measure, near-field/far-field region boundaries, electrical vs. physical length, and how to rotate antennas and arrays. - **Early (~10%–30%)**: Moves into computational techniques (method of moments, physical optics, RWG basis functions) and then into worked examples: patch antennas on thin vs. thick dielectric substrates, spiral antennas, Yagi-Uda optimization, and WiFi sector/PIFA designs. - **Middle (~30%–55%)**: Expands into system-level modeling — infinite ground planes and ground screens for arrays, parallelized analysis, FMCW patch arrays at 77 GHz, infinite-array scan-element patterns, wireless power transfer with spiral resonators, and MIMO mutual-coupling effects on BER. - **Late (~55%–80%)**: Shifts toward workflow and tooling — importing/visualizing measured pattern data (e.g., MSI Planet files), custom radiation patterns, and Site Viewer for terrain- and building-aware propagation, including its internet and data limitations. - **Ending (~80%–100%)**: Consolidates reference material — port analysis functions, plotting options (2D/3D, u-v coordinate systems), optimization workflows, and cross-references to related examples and helper functions. 【Key Takeaways】 - **Return loss defines usable bandwidth** (Opening): The band where return loss exceeds 10 dB is the operating bandwidth, and the `returnLoss` function computes it for any library antenna — the first metric to check before deeper analysis. - **VSWR is a second lens on matching** (Opening): Expressed through S11 as (1+|S11|)/(1−|S11|), it gives an intuitive standing-wave picture; a 1.5:1 value means peak amplitude is 1.5× the minimum. - **Field regions follow explicit boundary formulas** (Opening): Reactive near field (R < 0.62·D³/λ), radiating near field up to 2D²/λ, then far field where the pattern no longer depends on distance — these govern where your measurements and simulations are valid. - **Solver accuracy depends on meshing relative to wavelength** (Early): MoM needs roughly 10 elements per wavelength; substrates thicker than ~1/10 wavelength in dielectric call for manual meshing, and ignoring this produces predictable error. - **Global optimization is often necessary** (Early): Yagi-Uda design surfaces have multiple local optima, so direct-search methods like pattern search are used to hit goals such as directivity plus a 300 Ω match. - **Infinite-array analysis trades edge effects for speed** (Middle): Assuming identical elements with uniform excitation and replacing the isolated element pattern with a scan-element pattern captures mutual coupling while ignoring edge effects — useful for large finite arrays. - **Coupling matters at tight spacing** (Middle): At 0.1λ element spacing, MIMO bit-error-rate results can shift up or down depending on correlation, whereas 0.5λ spacing has negligible impact. - **Site Viewer has hard data dependencies** (Late): Default terrain needs internet access, custom DTED files must be sourced externally, and OpenStreetMap building data is crowd-sourced and may be incomplete at export edges. 【Reading Tips】 - Treat the examples chapter as the core: run each script, then perturb one parameter (substrate thickness, element spacing, tilt) to see how results move — this is where the manual teaches most. - Deep-read the opening concepts and the meshing/substrate guidance; skim the long reference lists and cross-links unless you need a specific citation. - Watch for the recurring accuracy caveat: whenever substrate thickness or frequency vectors push past the 10-elements-per-wavelength rule, expect and explain solution error rather than trusting plots blindly. - Use the port-analysis and plotting function references as a lookup appendix once you have a working model; they are more useful after you have something to plot. 【Coverage Limits】 These excerpts sample concepts, computational techniques, and a broad set of examples, but do not cover the full function reference, every example, or the complete Site Viewer and app workflows; chapter numbering and percentages are approximate.