Résultats de la recherche pour "antenne"
-
Elektor Digital Intelligente Sensoren in Embedded-Systemen (PDF)
Vom Messwert zur stabilen Entscheidung Wie wird aus einem einfachen Mikrocontroller ein intelligentes System, das Sensorwerte erfasst, verarbeitet und sinnvoll darauf reagiert? Dieses Buch zeigt es Ihnen Schritt für Schritt – verständlich, praxisnah und ohne unnötige Vorkenntnisse. Sie beginnen mit den Grundlagen der digitalen und analogen Ein- und Ausgänge. Anschließend lernen Sie, wie Sensorwerte gelesen, geglättet und zuverlässig bewertet werden. Anschauliche Beispiele erklären, warum einzelne Messwerte oft täuschen können und wie Mittelwertbildung, Hysterese und einfache Entscheidungsregeln für stabile Ergebnisse sorgen. Nach und nach erweitern Sie Ihre Projekte um Displays, I²C-Kommunikation und mehrere vernetzte Mikrocontroller. So entstehen verteilte Systeme, in denen Raspberry Pi Pico und ATtiny-Controller Daten austauschen und gemeinsam Aufgaben übernehmen. Im fortgeschrittenen Teil erhalten Sie einen leicht verständlichen Einstieg in Merkmalsbildung, Datenvorverarbeitung, hybride Entscheidungsmodelle und TinyML-nahe Anwendungen. Dabei verbinden Sie klassische Regelungstechnik mit modernen datenbasierten Methoden. Alle Projekte werden von ausführlich kommentierten Programmen in C und MicroPython begleitet. Das Buch richtet sich an Einsteiger, Maker, Studierende und alle, die Embedded-Systeme von Grund auf verstehen möchten. Am Ende können Sie eigene Systeme entwickeln, die nicht nur messen, sondern Informationen auswerten, zuverlässige Entscheidungen treffen und gezielt reagieren.
€ 32,80
Membres : € 29,52
-
Seeed Studio Seeed Studio RF Explorer WSUB1G+ Slim analyseur de spectre
The Seeed Studio RF Explorer WSUB1G+ is a powerful, high-performance digital spectrum analyzer covering frequencies from 50 kHz to 1 GHz. The Slim model features a robust design, a more conveniently positioned USB connector on the side, and a larger internal battery capacity. Caractéristiques Internal LNA amplifier and selectable attenuator Low frequency support from 50 KHz covering LF, MF, HF, VHF and UHF up to 960 Mhz New HELP and SET buttons to improve user interface and configuration selection with 2-clicks Wide band coverage to all popular sub-1 Ghz bands, including FM, TV and DTV, ISM, RFID, GSM, etc. Ideal choice for HAM bands from 160 m to 33 cm Pocket size and light weight Solid metal case Spectrum Analyzer mode with Peak Max and Hold, Normal, Overwrite and Averaging modes High capacity internal Lithium battery for 20hs+ of continuous run, rechargeable by USB Multi-platform Windows/Linux/MacOS Open Source software and API libraries Can be extended with internal Expansion Modules for additional band and functionality Spécifications Frequency band: 0.05 MHz – 960 MHz Frequency span: 0.1 MHz – 960 MHz Internal selectable LNA 25 dB gain Internal selectable Attenuator 30 dB Graphics LCD 128 x 64 pixels, great visibility outdoors Support included for Windows, Linux and MacOS X Backlight for great visibility indoor Internal Lithium Ion 1800 mA/h rechargeable battery Standard SMA 50 Ω connector Wideband 144/433 MHz dual band telescopic antenna included UHF 400-900 MHz rubber duck articulated antenna included Amplitude resolution: 0.5 dBm Dynamic range: -125 dBm to 10 dBm Absolute Max input power: +30 dBm Average noise level (typical LNA): -125 dBm Frequency stability and accuracy (typical): ±10 ppm Amplitude stability and accuracy (typical): ±2 dBm Frequency resolution: 1 kHz Resolution bandwidth (RBW): Automatic 2.6 kHz to 600 kHz Inclus 1x Seeed Studio RF Explorer WSUB1G+ Slim Spectrum Analyzer 1x Mini USB cable 1x Dual band 144/430 MHz Telescopic antenna 1x UHF 400-900 Mhz antenna 1x EVA case
€ 202,80
-
tinySA tinySA Ultra+ ZS407 Analyseur de spectre
The tinySA Ultra+ ZS-407 is a compact, handheld spectrum analyzer and signal generator. Covering 100 kHz to 7.3 GHz in Ultra mode, it lets you visualize and analyze RF signals from HF right through many modern wireless bands – and can even spot signals up to ~12 GHz thanks to harmonic tracking. The intuitive 4-inch resistive touchscreen and rechargeable battery make it great for fieldwork, while features like a built-in signal generator, switchable bandpass filters, step attenuator, USB-PC control and auto-calibration add serious versatility. Caractéristiques Screen size: 4 inch (480 x 320) Spectrum Analyzer for 0.1-900 MHz or, with Ultra mode enabled up to 7.3 GHz, level calibrated up to 7.3 GHz. Can observe signals up to 12 GHz Signal Generator with sine wave output between 0.1-900 MHz or square wave up to 6.3 GHz or RF test signal output up to 7.3 GHz when not used as Spectrum Analyzer. Switchable resolution bandpass filters from 200 Hz to 850 kHz Built-in 20 dB optional LNA Color display showing max 450 points providing gapless covering up to the full frequency range. MicroSD card slot for storing measurements, settings and screen captures. Spécifications (Analyseur de spectre) Input frequency range from 100 kHz to 900 MHz in normal mode and up to 7.3 GHz with ULTRA mode enabled Input impedance 50 ohm when input attenuation set to 10 dB or more. Selectable manual and automatic input attenuation between 0 dB and 31 dB in 1 dB steps when LNA not active Maximum +/-5V DC input Absolute maximum input level of +6 dBm with 0 dB internal attenuation Absolute maximum short term peak input power of +20 dBm with 30 dB internal attenuation Suggested maximum input power of +0 dBm with internal attenuation in automatic mode For best measurements keep input power below -25 dBm Input Intercept Point of third order modulation products (IIP3) of +15 dBm with 0 dB internal attenuation 1 dB compression point at -1 dBm with 0 dB internal attenuation Power detector resolution of 0.5 dB and linearity versus frequency of ±2 dB below 5.3 GHz, ±5dB between 5.3 GHz and 6 GHz Minimum burst length for correct level measurement at 850 kHz RBW in zero span mode of 50 microseconds Absolute power level accuracy after power level calibration of ±2 dB Built-in optional 20 dB LNA with Noise Figure of 5 dB up to 6 GHz Lowest discernible signal without LNA at 30 MHz using a resolution bandwidth of 30 kHz of -102 dBm Lowest discernible signal with LNA at 30 MHz using a resolution bandwidth of 200 Hz of -145 dBm Frequency accuracy equal to the selected resolution bandwidth Phase noise at 30 MHz of -108 dB/Hz at 100 kHz offset and -115 dB/Hz at 1MHz offset Spur free dynamic range when using a 30 kHz resolution bandwidth of 70 dB Resolution filters with a width of 0.2, 1, 3, 10, 30, 100, 300, 600 and 850 kHz On screen resolution of 51, 101, 145, 290 or 450 measurement points. Scanning speed of over 1000 points/second using largest resolution filters. Automatic optimization of actual scanning points to ensure coverage of the whole scan range regardless of the chosen resolution bandwidth Spur suppression option for assessing if certain signals are internally generated or actually present in the input signal Headphone output for listening to the demodulated audio (AM only). Stereo connector with or without microphone, high impedance is louder, short protected Spécifications (Générateur de signaux) Sine wave output with harmonics below -40 dB of fundamental from 100 kHz to 900 MHz Output level selectable in 1 dB steps between -115 dBm and -19 dBm Above 800 MHz choice of two output modes: Cleanest signal mode: square wave, up to 6 GHz with coarse frequency steps and less accurate output level Highest accuracy mode: reduced harmonics with possibly strong spurs up to 7.3 GHz with frequency resolution equal to below 800 MHz and fine output level steps Level accuracy ±2 dB up to 800 MHz between -72 dBm and -19 dBm, less accuracy below -72 dBm, even less accuracy below -110 dBm Output frequency resolution 57.2 Hz Optional AM or FM modulation frequencies between 50 Hz and 5 kHz (AM) or 1 kHz (FM) or sweep over selectable frequency span AM modulation depth between 10% and 100% FM deviation between 1 kHz and 300 kHz Optional output level sweep over maximum the entire output level range Inclus 1x tinySA Ultra+ ZS407 Spectrum Analyzer 2x SMA connection cables 1x Barrel connector 1x Antenna with SMA connector 1x USB-C cable 1x microSD card (32 GB) Téléchargements Wiki
€ 194,40
-
Elektor Digital RFID (E-book)
RFID technology has conquered many areas in which barcodes, magnetic strips and contact smartcards were used previously. Everyday applications, such as electronic ticketing, access cards, debit cards and electronic identity documents would not be possible without this technology. MIFARE is the most widely used RFID technology, and this book provides a practical and comprehensive introduction to it. Among other things, the initial chapters cover physical fundamentals, relevant standards, RFID antenna design, security considerations and cryptography. The complete design of a reader’s hardware and software is described in detail. The reader’s firmware and the associated PC software support programming using any .NET language. The specially developed PC program, “Smart Card Magic.NET”, is a simple development environment that supports sending commands to a card at the click of a mouse, as well as the ability to create C# scripts. Alternatively, one may follow all of the examples using Visual Studio 2010 Express Edition. Finally, the major smart card reader API standards are introduced. The focus is on programming contactless smartcards using standard PC/SC readers using C/C++, Java and C#.
€ 34,95
Membres : € 31,46
-
Elektor Digital Elektor Green Lidmaatschap
Elektronica leren, ontwikkelen en begrijpen – met Elektor Projecten, vakkennis, toegang tot het archief en exclusieve kortingen – alles in één lidmaatschap Wilt u elektronica leren, uw eigen schakelingen ontwikkelen en moderne technologieën beter begrijpen? Elektor Magazine behoort al 65 jaar tot de toonaangevende informatiebronnen voor elektronica-ingenieurs, ontwikkelaars, start-ups en bedrijven. Met een Elektor Green Lidmaatschap verzekert u zich van: ✅ Het internationale elektronica-vakblad Elektor (als digitale uitgave) ✅ Toegang tot het Elektor-archief met 65 jaar elektronica-knowhow ✅ Zelfbouwprojecten, geteste schakelingen, in-depth reviews en tutorials ✅ Exclusieve ledenkortingen op Elektor.nl Waarom Elektor? Al 65 jaar staat Elektor voor gedegen elektronica-kennis, praktijkgerichte projecten en innovatieve technologieën. Van microcontrollers en embedded systemen tot Raspberry Pi, Arduino en ESP32, en van IoT, AI en meettechniek tot audio, RF en robotica: Elektor bestrijkt de belangrijkste platforms en toepassingsgebieden van moderne elektronica. Of u nu beginner, maker of professional bent – met Elektor tilt u uw vaardigheden naar een hoger niveau. Voor wie is het lidmaatschap bedoeld? Beginners – Stap de wereld van de elektronica binnen met begrijpelijke basisprincipes en eerste projecten Makers – Ontdek nieuwe projecten, ideeën en inspiratie voor uw eigen ontwikkelingen Professionals & ingenieurs – Blijf op de hoogte van de nieuwste technologieën en verdiep uw vakkennis Uw voordelen in één oogopslag Tijdschrift (digitaal) – Ontvang elke uitgave digitaal rechtstreeks in uw mailbox 65 jaar kennis van elektronica – Krijg op elk moment toegang tot het uitgebreide Elektor-archief Praktijk & projecten – Breng uw eigen ideeën tot leven met handleidingen, schakelingen en tutorials Exclusieve kortingen – Bespaar bij elke aankoop op Elektor.nl Ontgrendel nu alle Elektor-voordelen! Free Lidmaatschap Green Lidmaatschap ❌ 8× Elektor Magazine (Digitale editie) als PDF ✅ 8× Elektor Magazine (Digitale editie) als PDF ❌ 12 maanden toegang tot het Elektor-archief ✅ 12 maanden toegang tot het Elektor-archief ❌ Toegang tot meer dan 5.000 Gerber-bestanden ✅ Toegang tot meer dan 5.000 Gerber-bestanden ❌ 10% ledenkorting op Elektor.nl ✅ 10% ledenkorting op Elektor.nl ✅ Lees Elektor wekelijks elke vrijdagochtend ✅ Lees Elektor wekelijks elke vrijdagochtend ℹ️ Leest u Elektor liever in gedrukte vorm? Hier vindt u alles over het Elektor Gold-lidmaatschap (print).
€ 89,95 - € 169,95
-
€ 19,90
Membres : € 17,91
-
Elektor Digital Elektor Novembre/Décembre 2024 (PDF)
Le téléchargement intégral de ce numéro est disponible pour nos membres GOLD et GREEN sur le site Elektor Magazine ! Pas encore membre ? Cliquez ici. Prototypage, production et composants ! carte processeur Audio DSP FXpartie 1 : caractéristiques et conception 50 ans d'Elektor en anglais KiCad 8nouvelles et dernières caractéristiques Elektor @ electronica 2024electronica Fast Forward 2024, des experts sur scène, des forums d'influenceurs, des talk-shows Elektor Lab en direct, et plus encore kit MultiCalculator d'ElektorUn kit de calculatrice basé sur Arduino pour l'électronique systèmes GNSS RTK à faible coûtavec un degré de précision de l'ordre du centimètre routage des Circuits Imprimés et sécuritéConseils pour une conception sure et fiable de vos cartes électroniques testeur d'ampli-oppour les applications audio et autres mise à jour du projet #4 : compteur d'énergie ESP32surveiller l'énergie avec MQTT analyseur de spectre temps-réel à technologie guide d’onde et PC à interfaces multiplesAaronia introduit une nouvelle ligne de produit et présente ses premiers prototypes au salon Electronica de Munich inductances SMTbobines et ferrites – un choix simplifié utilisation d’un blindage EMI pour assurer la conformité à la compatibilité électromagnétique l'outil ultime pour tous les passionnés d’électroniqueDébloquez des possibilités infinies avec Red Pitaya et plus de 1000 Click Boards™ HDI au milieuUn nouveau service PCB-pooling rentable pour des petits BGA défis de l'analyse DFM pour les circuits flexibles et flexibles-rigides outils open-sourcesimulateur d'antennes, gestion des composants, calculatrice, et bien plus Infographie : prototypage et production sur le vifmicrotechnophobie : c’est grave, docteur ? arbre de Noël 3Dcircuit imprimé 3D avec un microcontrôleur 32 bits peu coûteux démarrer en électronique......on continue avec l'ampli-op ! nœud de capteurs autonome (mise à jour du projet #1)Reducing Idle Power Consumption with External RTC and Power Switch 2024 : l'odyssée de l'IAUn regard sur l'avenir afficheurs LED avec le MAX7219Une méthode pratique pour une excellente puce projet 2.0Corrections, mises à jour et courrier des lecteurs gants vibro-tactilesune avancée pour les patients de Parkinson
€ 10,95
-
Elektor Digital RFID (PDF)
RFID (DE) | E-book
€ 44,80
Membres : € 40,32