Skip to main content
1 Series

Limiters

1 Series
Overview

Anritsu offers 1 Series limiters from 1 MHz to 26.5 GHz that provide input protection for a variety of RF and Microwave instruments. They come with different connector configurations and provide excellent accuracy over the frequency band with an average power input up to 5 watts.

  • High power protection: 5 Watts
  • Very fast turn-on time: 10 ns max.
  • Broad frequency range: 0.01 GHz to 26.5 GHz
  • Low insertion loss: 2.7 dB up to 20 GHz
  • Excellent return loss: 11 dB at 20 GHz
  • Single side limiting
Specifications
Model

 1K50B

  1K50A

  1N50C

Frequency Range

 0.01 GHz to 26.5 GHz

0.01 GHz to 20 GHz 

0.01 GHz to 18 GHz 

Max. Input Power

 3 watts

5 watts 

5 watts 

Min. Return Loss
(at 0 dBm input)

10 dB 

14 dB, <12 GHz
11 dB, >12 GHz 

14 dB, <12 GHz
11 dB, >12 GHz 

Max. Insertion Loss
(at 0 dBm input)

3.9 dB

2.7 dB

2.9 dB

Max. Turn-on Time

10 ns

10 ns

10 ns

Input Connector

K(m)

K(m)

N(m)

Output Connector

K(f)

K(f)

N(f)

Input/Output Coupling

DC

DC

DC

Model

  1N75C

 1N50B

 1N75B

Frequency Range

0.01 GHz to 3 GHz 

0.01 GHz to 3 GHz 

0.01 GHz to 3 GHz 

Max. Input Power

5 watts 

1.5 watts 

1.5 watts 

Min. Return Loss
(at 0 dBm input)

15 dB 

19 dB 

19 dB 

Max. Insertion Loss
(at 0 dBm input)

1.1 dB

1.3 dB

1.3 dB

Max. Turn-on Time

10 ns

10 ns

10 ns

Input Connector

75 ohms
N(m)

N(m)

75 ohms
N(m)

Output Connector

75 ohms
N(f)

N(f)

75 ohms
N(f)

Input/Output Coupling

DC

AC

AC

Limiting Level: Limiter begins compressing at approximately +10 dBm. In compression, output level increase by 0.25 dB to 0.5 dB for each 1.0 dB increase at the input. Output power at 5 watts input at 500 MHz is 21 dBm.
Dimensions: 1N50B and 1N75B, 3.8 cm x 2.5 cm x 2.5 cm
Temperature range:  0 °C to +70 °C

Library