Rca1948FrequencyModu.. - The New Jersey Antique Radio Club

}354 FREQUENCY MODULATION, Volume I+ 2[x 2 (2r - 1) C(2r - 1,-; x, 6) cos {(2r - 1) (2x^)1+ 2[x 2 (2r) S(2r, -; x, 8) sin {(2r) (2iryU)(88)where the C- and S- functions are denned as follows:C{m, n; x, 9) = 2 (~ ^' J„(ms) cos s6 (89)s-1 SS(m, n; x, 6) = 2 ^ ^- J„(ws) sin s6 (90)«-l SX 2 < 1.APPENDIX III.Common-Channel Interference, Both Signals ModulatedWhen two frequency-modulated signals with a common carrier frequencyproduce interference, the effect is similar to that which occurswhen one wave is not modulated. The exact relations can be obtained inthe following way:Let: ei = JE7i sin (w< H sin 2x[j.it) (91)and: e 2 = E, sin (co< H sin 2ir(Xi t) (92)be the two interfering waves.Then:ei + e 1 =V / Ei ! + E,* + 2EiE, cos tji sin (a>< H'sin 2ir[iit -