FDMA, TDMA, CDMA, OFDMA, and SDMA: Key Differences and …
网页2013年1月22日 · The best example of this is the cable television system. The medium is a single coax cable that is used to broadcast hundreds of channels of video/audio programming to homes.
What’s The Difference Between Bit Rate And Baud Rate?
网页2012年4月27日 · For instance, in quadrature PSK there are two bits per symbol. Using this arrangement and two bits per baud, the bit rate is twice the baud rate.
What’s the Difference Between PNP and NPN? - Electronic Design
网页2022年10月28日 · 2. A PNP transistor has a layer of N-doped semiconductor between two layers of P-doped material. 3. An NPN transistor has a layer of P-doped semiconductor between two N-doped layers. The junctions ...
Understanding Modern Digital Modulation Techniques
网页2021年7月14日 · These techniques are used in many modern communication systems, such as cellular phones, Wi-Fi, and Bluetooth. Common digital modulation techniques include amplitude-shift keying (ASK), frequency ...
Welcome To Antennas 101 - Electronic Design
网页2021年7月29日 · This article is part of the TechXchange: Antenna Design 101. Download this article in .PDF format. This article was written by Louis Frenzel, author of Principles of Electronic Communications ...
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Back to Basics: Impedance Matching (Part 1) - Electronic Design
网页2011年10月24日 · Here, the 36-Ω impedance of a λ/4 vertical ground-plane antenna is matched to a 75-Ω transmitter output impedance with a 52-Ω coax cable. It’s calculated as: ZQ = √(75)(36) = √2700 = 52 ...
Understanding IEEE 802.11ac VHT Wireless | Electronic Design
网页2012年7月16日 · The most recent version of the IEEE’s wireless local-area network (WLAN) standard, 802.11ac, uses the 5-GHz unlicensed band and multiple-input multiple-output (MIMO) to significantly boost data ...
Understanding EMI Filters: The Bare Essentials
网页2021年7月20日 · EMI is simply noise interference caused by external electromagnetic waves. EMI can lead to the performance degradation of any electrical equipment design within range by inducing unwanted currents ...
Understanding Wireless Range Calculations | Electronic Design
网页2013年4月3日 · Maximum path loss = transmit power – receiver sensitivity + gains – losses – fade margin. V – maximum path loss = 20 – (–100) + 12 – 12 = 120 dB. Once the maximum path loss has been ...