This book mainly contains derivations related to following topics in a very easier INTRODUCTION2. WAVES BETWEEN PARALLEL PLANES2.1 TRANSVERSE ELECTRIC (TE) WAVES OR H WAVES (Ez = 0, Hz 0) :2.2 TRANSVERSE MAGNETIC (TM) WAVES OR E WAVES (Hz = 0, Ez 0) :2.3 CHARACTERISTICS OF TE AND TM WAVES2.4 TRANSVERSE ELECTROMAGNETIC (TEM) WAVES (EZ = 0, HZ = 0)2.5 PROPAGATION CHARACTERISTICS OF TEM WAVE3. VELOCITIES OF PROPAGATION4. ATTENUATION IN PARALLEL PLANE GUIDES4.1 ATTENUATION FACTOR FOR TE WAVES4.2 ATTENUATION FACTOR FOR TM WAVES4.3 ATTENUATION FACTOR FOR TEM WAVES5. WAVE IMPEDANCE FOR GUIDES5.1 WAVE IMPEDANCE FOR TE WAVES5.2 WAVE IMPEDANCE FOR TM WAVES5.3 WAVE IMPEDANCE FOR TEM WAVES