EEVblog #1176 - 2 Layer vs 4 Layer PCB EMC TESTED!

What difference does a 4 layer PCB make to EMC radiated emissions compared to an identical 2 layer PCB? And why? Dave does H-Field near-field probe testing on two otherwise identical PCB’s. Electromagnetic waves and the difference between near field and far field, and H-Field and E-field probes and wave impedance is also explained. The PCB layout is then examined to look at loop area and by-passing and what effect this has. Forum: !/ Designing the 4 layer board: Bypass capacitor Visualised: PCB Power Plan Capacitance: Bitcoin Donations: 38y7DE8HEHNj8fGDtUr4PkCn9nWxiorvvy Litecoin: ML7oQokTwB38bgzzjLDbRV97HKAHuwRfHA Ethereum: 0x11AceA38DCA9DbFfB4F35f3F746af65F9dED28ce EEVblog Main Web Site: The 2nd EEVblog Channel: Support the EEVblog through Patreon! AliExpress Affiliate: Buy anything through that link and Dave gets a commission at no cost to you. Stuff I recommend: Donate With Bitcoin & Other Crypto Currencies! T-Shirts: Likecoin – Coins for Likes: @eevblog/dil9/hcq3 #PCBdesign #PCBdesign #EMC Теги: eevblog,video,h-field,e-field,b-field,near field,far field,near field emc,emc testing,emc compliance,emc pre-compliance,pcb layout,ground plane,power plane,inductance,loop area,pcb loop area,pcb,pcb design,how to,pcb tutorial,antenna