Rca1948FrequencyModu.. - The New Jersey Antique Radio Club

COMMON- AND ADJACENT-CHANNEL INTERFERENCE 357These two results give the expression:2ir 2 2 ^—'-—2cos wb —- =•[ J T (y) J s (5) cos (ra — sj3)'CM r =-»s = -oo ( v y »COCO= — 2 2 (/y.i - s^) Jr (y) J s (5) cos (ra - s/3) (104)W r=— oos=— ooThe audio output from a balanced discriminator thus becomes:Output a D, cos 2ir[iit2j 2j 2j (r;xi - S(a 2 ) J, I ) J s I ) cos {ra- sB)„ = 1 r =-oo s =_oo n \ [Ai / \ ^.2 /= Di cos 2tt[Ai< +2 2 (r[Ai - sja 2 ) C(r,—-; s, —: », 0)r = — 00 S = — 00 [J. 1 fJ.2cos {ra — sB) (105)where the generalized C-function is denned as follows:C(k, I; m, n: x, 6) = 2 — J k (s I) J m (sn) cos s6, (106)s = l sa — 2-k\x4 and /3 = 2irj.%t.