Attenuator Calculator - Microwave Encyclopedia

Tee Attenuator Calculator
Enter Attenuation and Z_o to solve for R1 and R2
Atten. (dB)	Z_o ()	R1 ()	R2 ()
		2.88	433.34
R1 = Z0 * ((10 ^ (dB / 20) - 1) / (10 ^ (dB / 20) + 1)) R2 = 2 * Z0 * (10 ^ (dB / 20) / (10 ^ (dB / 10) - 1))

Pi Attenuator Calculator
Enter Attenuation and Z_o to solve for R1 and R2
Atten. (dB)	Z_o ()	R1 ()	R2 ()
		869.55	5.77
R1 = Z0 * ((10 ^ (dB / 20) + 1) / (10 ^ (dB / 20) - 1)) R2 = (Z0/2) * (10 ^ (dB / 10) - 1) / (10 ^ (dB / 20))

Bridged Tee Attenuator Calculator
Enter Attenuation and Z_o to solve for R1 and R2
Atten. (dB)	Z_o ()	R1 ()	R2 ()
		6.10	409.77
R1 = Z0 * (10 ^ (dB / 20) - 1) R2 = Z0 / (10 ^ (dB / 20) - 1)

Reflection Attenuator Calculator
Enter Attenuation and Z_o to solve for R1 and R2
Atten. (dB)	Z_o ()	R1 < Z_o()	R1 > Z_o()
		2.88	869.55
R1 = Z_o * ((10 ^ (dB / 20) - 1) / (10 ^ (dB / 20) + 1)) for R1 < Z_o R1 = Z_o * ((10 ^ (dB / 20) + 1) / (10 ^ (dB / 20) - 1)) for R1 > Z_o

Balanced Attenuator Calculator
Enter Attenuation and Z_o to solve for R1
Atten. (dB)	Z_o ()	R1()
		204.89
*R1 = Z_o (1 / (10 ^ (dB / 20) - 1) )**

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