# EOLT Multifunction Antennas > Source: https://mcd.site team.de/en/industries/automotive-e-mobility/eolt-multifunction-antennas/ > Last updated: 2026-10-05 --- END-OF-LINE TEST SYSTEM FOR # Multifunction antennas [Learn More](#) ![](https://mcd.site team.de/wp-content/uploads/2026/04/mcd_cropped_eolt-multifunktionsantennen_gesamt-1240x1638-1-775x1024.webp) ## Multifunction antennas must operate reliably across many frequency bands despite interference. To ensure that every antenna meets the required signal quality and functionality, the end-of-line tester (EOLT) checks the RF performance and relevant diagnostic functions with cycle times as short as approximately 30 seconds. In addition, a mechanical test ensures that the contacts, assembly, and workmanship consistently meet the specifications. Sensors check the connector and verify that the test item is properly assembled. ## Challenges and Concept ![](https://mcd.site team.de/wp-content/uploads/2026/07/eolt-multifunktionsantennen_kontaktierung-scaled.png) ![](https://mcd.site team.de/wp-content/uploads/2026/06/Group_30131.svg) Multifunction antennas in modern motor vehicles combine numerous communication and reception technologies into a single assembly. They must reliably process radio signals, navigation systems, cellular, and satellite signals—regardless of external factors such as vehicle movement, electromagnetic interference, or different frequency ranges. Consequently, the requirements for a reproducible and precise end-of-line test are extremely high. To address these challenges, MCD Elektronik developed an automated end-of-line test (EOLT) system that combines electrical, high-frequency, and mechanical tests into a single test sequence. A specially developed helical antenna for signal stimulation, an RF-tight adapter, and pneumatically controlled high-frequency contacting enable reliable testing across the entire relevant frequency range. The concept is complemented by MCD’s TestManager CE and DatenManager testing software, MCD Elektronik’s control technology, and complete documentation of all test results for seamless traceability. ## Test and Functional Scope ![](https://mcd.site team.de/wp-content/uploads/2026/07/eolt-multifunktionsantennen_pruefling-1024x768.png) ![](https://mcd.site team.de/wp-content/uploads/2026/06/Group_30131.svg) - Current and voltage measurements from 5 V to 10 V - Frequency testing from 87.5 kHz (FM) to 2.7 GHz (LTE) - Testing of various signals, such as radio (AM, FM, DAB II), GNSS navigation (GPS, GLONASS), satellite (SDARS, TV), mobile radio, and CB radio (including protected signals) - Mechanical Testing of Antennas Using Sensors - Testing the Diagnostic Functions - Automatic detection and switching functions ## Test Methods Used and Results ![](https://mcd.site team.de/wp-content/uploads/2026/06/Group_30131.svg) The end-of-line test system fully automatically tests the electrical, high-frequency, and mechanical functions of the multifunction antenna. The scope of testing includes current and voltage measurements, frequency tests across the entire relevant frequency range, and signal transmission tests for radio, navigation, satellite, and cellular signals. These are supplemented by mechanical tests and verification of the diagnostic and switching functions. All test results are automatically recorded and documented. As a result, the test system ensures high process reliability, reproducible measurement results, and complete traceability in series production. ## Features ![](https://mcd.site team.de/wp-content/uploads/2026/06/Group_30131.svg) - MCD TestMATE Testing Software and Toolmonitor DataManager - Control Components from MCD Elektronik - Specially designed helical antenna for signal amplification from 0.001 mW to 1 mW - High-Frequency Density Adaptation - Pneumatically controlled high-frequency contact with 18 mA (GNSS) to 100 mA (FM/DAB) - 2D Mini Barcode Scanner - ULC Rack with Network Adapter - Industrial Computers - Additional components: network analyzer, marking laser, RF module ## Other Possible Applications ![](https://mcd.site team.de/wp-content/uploads/2026/05/Multiple-Layers-1.webp) 1 ### Reliable Testing of Signals and Frequencies We test signals and frequencies reliably and reproducibly to ensure consistent performance throughout development and production. 2 ### Precise Testing of Transmitter and Receiver Modules We conduct precise testing of transmit and receive modules to detect deviations early on and ensure compliance with specifications. 3 ### Efficient Testing of High-Frequency Amplifiers We test high-frequency amplifiers efficiently using clearly structured measurement procedures, ensuring that quality assurance and end-of-line tests quickly deliver reliable results. 4 ### Comprehensive Testing of Telecommunications Modules We conduct comprehensive testing of telecommunications modules, covering functionality and performance as required by the respective application. 5 ### Analysis of Satellite Receivers and Other RF Components We systematically analyze satellite receivers and other RF components to ensure signal processing, stability, and the proper interaction of the assemblies. ## WHAT WE INSPECT ON THE VEHICLE ### SCOPE OF THE AUDIT - Side Door / Door Control Panel - Exhaust / Throttle Area - Cockpit / Center Console - Center console - Heating/HV System - Engine Compartment / Battery Area - Roof / Antenna - Side-view mirrors - Headlights / Front Lights - Tailgate / Lock Area - Windshield / Windshield Wipers ![](https://mcd.site team.de/wp-content/uploads/2026/05/MCD-AUTOMOTIVE_Gemin-2-scaled.webp) ## ECUS FOR LIGHTING CONTROL Tested with the FCT system - Parallel testing of four PCBs - Manual, semi-automatic or fully automatic adapter - 130 test steps in 95 seconds per test position - Interchangeable needle bed cassettes ## FREQUENTLY ASKED QUESTIONS ### FAQs WHAT IS AN EOL TEST SYSTEM FOR MULTIFUNCTIONAL ANTENNAS? The EOL (End-of-Line) test system is used for the automated final inspection of vehicle antenna assemblies. It combines electrical functional tests, RF measurements, and mechanical tests to verify product specifications. WHAT TESTS ARE PERFORMED ON MULTIFUNCTIONAL ANTENNAS? An EOL (End-of-Line) test system is a testing setup used in electronics manufacturing that is deployed directly at the end of the production line for the final quality inspection of electronic assemblies—in this case, vehicle antennas with different frequency interfaces. It combines electrical measurements, RF tests, and mechanical tests to ensure full functionality. WHY IS THE EOL TEST SO IMPORTANT FOR AUTOMOTIVE ANTENNAS? An EOL (End-of-Line) test system is a testing setup used in electronics manufacturing that is deployed directly at the end of the production line for the final quality inspection of electronic assemblies—in this case, vehicle antennas with different frequency interfaces. It combines electrical measurements, RF tests, and mechanical tests to ensure full functionality. WHAT TECHNOLOGIES ARE USED IN THE MCD TESTING SYSTEM? An EOL (End-of-Line) test system is a testing setup used in electronics manufacturing that is deployed directly at the end of the production line for the final quality inspection of electronic assemblies—in this case, vehicle antennas with different frequency interfaces. It combines electrical measurements, RF tests, and mechanical tests to ensure full functionality. FOR WHAT OTHER APPLICATIONS IS THE EOL TESTER SUITABLE? An EOL (End-of-Line) test system is a testing setup used in electronics manufacturing that is deployed directly at the end of the production line for the final quality inspection of electronic assemblies—in this case, vehicle antennas with different frequency interfaces. It combines electrical measurements, RF tests, and mechanical tests to ensure full functionality. ![](https://mcd.site team.de/wp-content/uploads/2026/05/Multiple-Layers-1.webp) ## KEY FACTS IN NUMBERS TIMING OF THE TEST PROCESS ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) APPROX. 30 SECONDS FREQUENCY RANGE ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) 87.5 kHz (FM) to 2.7 GHz (LTE) VOLTAGE RANGE ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) 5 V TO 10 V TRANSMIT POWER ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) 0.001 mW TO 1 mW CURRENT CONSUMPTION ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) 18 mA (GNSS) to 100 mA (FM/DAB) ## downloads [TECHNICAL REPORT](https://mcd.site team.de/wp-content/uploads/2026/07/fachbericht-hf-test-messtec_mcd.pdf) Whether for radio, navigation, or mobile communications, today’s automotive antennas receive signals across a wide range of frequencies. Each of these so-called multifunction antennas is tested before delivery. Due to the broad frequency range, this presents a significant challenge, according to test technology specialist MCD. APPLICATION REPORT Learn more in the RF Test Messtec Application Report ## REFERENCE PROJECTS [![](https://mcd.site team.de/wp-content/uploads/2026/07/1_BMS_Gesamtsystem_frontclean_1-scaled.png)](https://mcd.site team.de/en/industries/automotive-e-mobility/eolt-battery-management-system/) EOLT Battery Management­ Systems [![](https://mcd.site team.de/wp-content/uploads/2026/07/2_EOL-Tester-Standalone_frei-inklSpiegelung-826x1024.png)](https://mcd.site team.de/industries/automotive-e-mobility/eolt-hochvariable-aussenspiegel/) EOLT Highly Variable Exterior Mirrors [![](https://mcd.site team.de/wp-content/uploads/2026/07/System_Front_Clean_Spiegelung_2-1-1024x833.png)](https://mcd.site team.de/industries/automotive-e-mobility/eolt-superkondensatoren-e-mobility/) EOLT Super­capacitors for E-Mobility ![](https://mcd.site team.de/wp-content/uploads/2026/05/Multiple-Layers-1.webp)