Category: Hardware Notes

Introduction to Patch Antenna Array with a Parallel Feeding Network

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Infineon BGT24LTR11N16 24Ghz Radar MMIC Impedance Matching

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Effective Dielectric Constant

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Plastic Dielectric Constant Measurement using TDR and Copper Foil Tape

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Lumped LC Balun Design

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The Considerations of Antenna Design for IOT and Wearable Devices

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Non‐Isolated AC/DC Power Supply Design and Implementation based on Power Integrations LNK3205

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Time-Domain Reflectometer (TDR) Theory and Implementation

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Philips Sonicare Electric Toothbrush Measurements without Teardown

Part I: Sonicare Electric Toothbrush Architecture Figure 1: Sonicare Electric Toothbrush Architecture This electric toothbrush is a water-resistant design, thus it adopts wireless charging technology. Coil 2 is the wireless charging receiver. A permanent magnet is attached to the trail

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Preamplifier 30 MHz to 6 GHz

Part I: Introduction I designed two preamplifiers which can be added to any application needs additional gain. The two designs have the same PCB layout but different IC U1 which is shown in the Figure 1. The PCB is shown

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