Figure 9 CQ21r2 21 Element Curtain Quad with 21 individual reflectors

Figure 9 CQ21r2 21 Element Curtain Quad for 1296 MHz with 21 individual reflectors.

Back to The Curtain Quad http://home.comcast.net/~ross_anderson/CurtainQuad.htm

Figures 9a and 9b. These drawings of CQ21r2 were created by 4nec2. The dimensions of this antenna can be found in the program listing below.

Figures 9c and 9d. These plots for the CQ21r2 antenna were created in 4nec2 using the program below.

CE CQ21r2 21 element Curtain Quad with 21 individual reflectors from W1HBQ

SY l0=1.034554

SY l1=3.62918

SY l2=4.547348

SY l3=3.903939

SY h=6.083289

SY y0 = .5 * l0

SY y1 = y0 + l1

SY y2 = y1 + l2

SY y3 = y2 + l3

SY yr01=3.70637

SY yr12=8.247566

SY yr23=9.354874

SY z0=0

SY z1 = h

SY z2 = z1 + h

SY z3 = z2 + h

SY lr0=4.223244

SY lr1=lr0

SY lr2=lr0

SY lr3=lr0

SY hr=h

SY yr0 = .5 * lr0

SY yr1a = yr01 - lr1/2

SY yr1b = yr01 + lr1/2

SY yr2a = yr12 - lr2/2

SY yr2b = yr12 + lr2/2

SY yr3a = yr23 - lr3/2

SY yr3b = yr23 + lr3/2

SY zr0=0

SY zr1 = hr

SY zr2 = zr1 + hr

SY zr3 = zr2 + hr

SY ref=1.977452

GW 1 11 0 y0 z3 0 y1 z3 0.0404

GW 2 2 0 0 z2 0 y0 z2 0.0404

GW 3 11 0 y1 z2 0 y2 z2 0.0404

GW 4 11 0 y0 z1 0 y1 z1 0.0404

GW 5 11 0 y2 z1 0 y3 z1 0.0404

GW 6 2 0 0 z0 0 y0 z0 0.0404

GW 7 11 0 y1 z0 0 y2 z0 0.0404

GW 8 11 0 y0 -z1 0 y1 -z1 0.0404

GW 9 11 0 y2 -z1 0 y3 -z1 0.0404

GW 10 2 0 0 -z2 0 y0 -z2 0.0404

GW 11 11 0 y1 -z2 0 y2 -z2 0.0404

GW 12 11 0 y0 -z3 0 y1 -z3 0.0404

GW 13 13 0 y0 z3 0 y0 z2 0.0404

GW 14 13 0 y0 z2 0 y0 z1 0.0404

GW 15 13 0 y0 z1 0 y0 z0 0.0404

GW 16 13 0 y0 z0 0 y0 -z1 0.0404

GW 17 13 0 y0 -z1 0 y0 -z2 0.0404

GW 18 13 0 y0 -z2 0 y0 -z3 0.0404

GW 19 13 0 y1 z3 0 y1 z2 0.0404

GW 20 13 0 y1 z2 0 y1 z1 0.0404

GW 21 13 0 y1 z1 0 y1 z0 0.0404

GW 22 13 0 y1 z0 0 y1 -z1 0.0404

GW 23 13 0 y1 -z1 0 y1 -z2 0.0404

GW 24 13 0 y1 -z2 0 y1 -z3 0.0404

GW 25 13 0 y2 z2 0 y2 z1 0.0404

GW 26 13 0 y2 z1 0 y2 z0 0.0404

GW 27 13 0 y2 z0 0 y2 -z1 0.0404

GW 28 13 0 y2 -z1 0 y2 -z2 0.0404

GW 29 13 0 y3 z1 0 y3 z0 0.0404

GW 30 13 0 y3 z0 0 y3 -z1 0.0404

GW 101 10 -ref yr1a zr3 -ref yr1b zr3 0.0404

GW 102 5 -ref 0 zr2 -ref yr0 zr2 0.0404

GW 103 10 -ref yr2a zr2 -ref yr2b zr2 0.0404

GW 104 10 -ref yr1a zr1 -ref yr1b zr1 0.0404

GW 105 10 -ref yr3a zr1 -ref yr3b zr1 0.0404

GW 106 5 -ref 0 zr0 -ref yr0 zr0 0.0404

GW 107 10 -ref yr2a zr0 -ref yr2b zr0 0.0404

GW 108 10 -ref yr1a -zr1 -ref yr1b -zr1 0.0404

GW 109 10 -ref yr3a -zr1 -ref yr3b -zr1 0.0404

GW 110 5 -ref 0 -zr2 -ref yr0 -zr2 0.0404

GW 111 10 -ref yr2a -zr2 -ref yr2b -zr2 0.0404

GW 112 10 -ref yr1a -zr3 -ref yr1b -zr3 0.0404

GX 200 010

GS 0 0 0.0254

GE 0

LD 5 0 0 0 58000000 0

EX 0 6 1 0 1 0

GN -1

FR 0 1 0 0 1296 0