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Filter and Ferrite Products

Standard MMW Components
Millitech Filter and Ferrite Products

Fullband Isolator  (FBI) Ferrite Isolator and Circulator (JFD) Wide Band Isolator (WBI) High Power Circulators & Isolators (HPC) Low Pass Filter (FLP) Iris Bandpass Filter (FIB) Narrow Bandpass Filter (FNP) High Pass Filter (FHP) Customized Components Back to MMW Product Family List

Filter and Ferrite Products

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The series FBI full waveguide band isolator is a Faraday rotation ferrite device. This isolator is offered from 18 to 220 GHz in ten waveguide bands. The isolator consists of a section of waveguide containing low loss ferrite material and impedance matching elements. The isolator has a maximum insertion loss of 1.5 dB in K-Band and 4.5 dB in G-Band. The corresponding isolation is 25 and 20 dB

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The series JFD junction ferrite isolator and circulator covers the frequency range from 18 to 100 GHz in seven waveguide bands. The isolator and circulator provide high isolation and low insertion in a relatively small package. These units are available in two configurations: single-junction and triple-junction.

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The series WBI wide band isolators provide an ideal solution for applications in broadband instruments and systems, swept frequency applications and cryogenically cooled radio telescopes. These isolators feature low insertion loss and high isolation in a compact size. They are also ideal for applications where space is at a premium.

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Millitech series HPC junction ferrite devices (circulators) cover the frequency range from 18 to 110 GHz. The circulator is a four-port, differential phase shift device which can be configured as an isolator by terminating two of the ports. The high isolation, low insertion loss, low VSWR (high return loss), and high power handling typical of these ferrite devices make them ideal for use with frequency sources, amplifiers, and receivers.

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The series FLP low pass filter provides high rejection and excellent selectivity for frequencies above the corner frequency. The filter covers 18 to 110 GHz in seven waveguide bands. The insertion loss is 1 dB in K-Band and increases to 1.6 dB (max) in W-Band. The waveguide cut-off frequency determines the rejection at the lower band edge. This filter has a wide stopband, rejecting up to three times the highest passband frequency.

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Millitech series FIB iris bandpass filters have a narrow passband in the range of 1% to 15% of center frequency. These filters offer low insertion loss in the passband with a wide range of passband frequencies. Filters in this series are available from 18 to 220 GHz, and can handle up to 10 Watts. These filters also offer excellent rejection at high and low side rejection frequencies. Characteristics of the filter can be modified to suit specific rejection requirements.

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The series FNP narrow bandpass filter has a passband bandwidth in the range of 2% to 5% of center frequency. The filter offers low insertion loss in the passband and a high degree of selectivity. For example, the typical insertion loss for a filter with 2% passband bandwidth in Ka-Band is 1.8 dB. Characteristics can be tailored to suit specific rejection requirements. The series FNP is available in eight waveguide bands from 18 to 140 GHz

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The series FHP high pass filter is designed and constructed to provide a sharp skirt selectivity of low frequency with minimum insertion loss in the passband. The typical insertion loss is 0.7 dB in K-Band, and increases to about 1.5 dB in W-Band. The insertion loss is determined by the corner frequency and selectivity. This filter is available in eight waveguide bands from 18 to 140 GHz. The filter characteristics can be tailored to meet specific rejection requirements

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Millitech will engineer custom variations of our standard MMW components, as well as, multi-component assemblies and solutions, with minimal non-recurring engineering (NRE) costs, to meet your specific requirements. Typically these modification are to meet one or more of the following requirements:

  • Tuned for specific performance characteristics
  • Extended operational temperatures
  • MIL/Space qualified
  • Hi-rel screening
  • RoHS compliant
  • ITAR compliant

Click Here for more information on Millitech's custom capabilities, components, assemblies and solutions.

Please contact your local sales representative or Millitech's sales team for information and quoting.