Engineering By Gk Mithal Pdf — Radio

Introduction

Module D: Radio Transmitters and Receivers

• AM/FM Generation: Armstrong method and Reactance tube modulators.
• Superheterodyne Receiver: The block diagram approach is vital. Focus on Image Frequency rejection and tracking errors.
• Noise: Calculation of Noise Figure (NF) and Signal-to-Noise Ratio (SNR) for cascaded stages.

Significance of "Radio Engineering by G.K. Mithal PDF" radio engineering by gk mithal pdf

Alternative Sources: If you're unable to find the PDF, you can try the following: Introduction Module D: Radio Transmitters and Receivers

Weaknesses / Limitations

• Outdated for modern RF design – Minimal coverage of PLLs, synthesizers, SDR (software-defined radio), digital modulation (QPSK, QAM), or modern IC-based RF circuits.
• Poor PDF quality – Many scanned copies online have missing pages, blurred diagrams, or OCR errors.
• Not for deep theory – If you want rigorous math (Fourier transforms, noise figure derivations, Smith charts), this is not the book. Look for Hayward, Kennedy, or Pozar instead.
• Limited to Indian syllabus – Lacks international depth or recent advancements (e.g., OFDM, spread spectrum).

Unit 5: Radio Receivers

• Superheterodyne Receiver Architecture: Antenna → RF Amp → Mixer → IF Amp → Detector → Audio Amp.
• Image Frequency: Calculation and rejection ratio.
• Tracking and Alignment: Ganging capacitors, padder, and trimmer adjustments.
• Automatic Gain Control (AGC): Simple, delayed, and amplified AGC.