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 Broadband Performance  Excellent Coupling Flatness  High Directivity  Low VSWR  Microwave Power Dividers & Couplers App Note Electrical Specifications Parameter1 Frequency Range (GHz) Min Typ Max Mean Coupling (dB) 2-26.5 Amplitude Flatness (dB)2 ±0.75 ±1.5 Direct Line Insertion Loss (dB) 1.2 VSWR 2-20 1.25 1.4 20-26.5 1.5 Directivity (dB) 2-20 15 22 20-26.5 13 18 Weight (g) 45 1Specifications guaranteed when operated in a 50Ω system. 2Deviation from average coupling. C20-0226 Directional Coupler OUTIN -20 ISOL dB .18 2.24 2.600 .30 .60 .23 .550 [66.04] [56.9] [4.6] [13.97] [5.8] [7.6] [15.2] [24.13] [20.95] D/C .825 .950 Ø.094 Thru 4 PL microwave [MM] INCH PROJECTION XXX=±.005 XX=±.02 .070 [1.78] .410 [10.41] The C20 -0226 is a broadband 2-26.5 GHz, 20 dB directional coupler. The multisection tri-plate stripline design exhibits excellent coupling flatness and VSWR at all ports. Custom designs are also available, contact the factory for details.

DIRECTIONAL COUPLER C20-0226 Page 2 Typical Performance Fig. 1. Direct line insertion loss. Fig. 3. Coupled port power. Fig. 2. Typical port return loss. Fig. 4. Typical directivity. Model Number Description C20-0226 2-26.5 GHz 20 dB Directional Coupler with SMA connectors1 LEAD-FREE/RoHS COMPLIANT 1Default is SMA female connectors. Consult factory for other connector options. Marki Microwave reserves the right to make changes to the product(s) or information contained herein without notice. Marki Mi crowave makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Marki Microwave assume any liability whatsoever arising out of the use of or application of any product. © Marki Microwave, Inc. 0 5 10 15 20 25 30 Frequency (GHz) Insertion Loss (dB) -50 -40 -30 -20 -10 0 5 10 15 20 25 30 Frequency (GHz) Coupled Power (dB) -30 -25 -20 -15 -10 0 5 10 15 20 25 30 Frequency (GHz) Return Loss (dB) -30 -25 -20 -15 -10 0 5 10 15 20 25 30 Frequency (GHz) Directivity (dB)