
AQA A-level Physics Electronics lesson on time-division multiplexing, AM and FM. 20 editable slides, 24-mark worksheet, mark scheme and PDFs.
What’s in the PowerPoint
• A signals recap starter, with answers in the speaker notes
• Time-division multiplexing, with a worked example
• Why carriers are used, and amplitude modulation with its spectrum
• Frequency modulation and its bandwidth
• AM and FM worked examples and a comparison table
• Data capacity of a channel, and a spreadsheet practical
• A common mistakes slide based on AQA examiner reports
• Six check questions with answers, and an exit ticket
• Teacher notes on every slide: spec references, examiner report tips, prior knowledge pages and practical ideas
What’s in the worksheet (24 marks)
• Recall of TDM, AM and FM
• AM, FM and TDM bandwidth and bit rate calculations
• A question on broadcasting music by AM or FM
• A 6-mark comparison of AM and FM
• A full mark scheme with mark points, on separate pages
• PDF copies of the slides, the student worksheet (no answers) and the mark scheme, ready to print
Good for: first teaching, revision, homework, cover lessons or independent study. The PowerPoint and Word files are fully editable, and the PDFs are ready to print or share with students.
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