Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

3-Port Frequency Selective Absorptive Limiter



A Hueltes, Eduard Rocas, Carlos Collado, Jordi Mateu, D Garcia-Pastor, James Booth, Rafael P. Robles


This paper proposes a novel 3-port absorptive limiter for frequency selective circuits based on a similar configuration than a conventional 90º hybrid coupler. This circuit uses the switching features existing in common diode devices to changes between the absorptive limiting and the non- limiting state. Theoretical description and design is presented along with a preliminary prototype based on shunt PIN diodes. Measurements of the limiting performance of the devices as a function of power demonstrate the viability of the concept.
IEEE Microwave and Wireless Components Letters


Absorptive limiter, frequency selective limiter, diode limiter, bi-state phase shifter.


Hueltes, A. , Rocas, E. , Collado, C. , Mateu, J. , Garcia-Pastor, D. , Booth, J. and Robles, R. (2017), 3-Port Frequency Selective Absorptive Limiter, IEEE Microwave and Wireless Components Letters, [online], (Accessed July 24, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created April 30, 2017, Updated October 12, 2021