MMIC
REFLECTIONLESS FILTER DICE
50Ω DC to 21 GHz
The Big Deal
• Patented design eliminates in band spurs
• Pass band cut-off up to 21 GHz
• Stop band up to 35 GHz
• Excellent repeatability through IPD* process
• Unpackaged Die Form
X-Series
Available in Low Pass, High
Pass and Band Pass designs
Product Overview
Mini-Circuits’ X-Series reflectionless filters employ a novel filter topology which absorbs and terminates
stop band signals internally rather than reflecting them back to the source. This new capability enables
unique applications for filter circuits beyond those suited to traditional approaches. Traditional filters are
reflective in the stop band, sending signals back to the source at 100% of the power level which interact
with neighboring components and often result in intermodulation and other interferences. Reflectionless
filters eliminate stop band reflections, allowing them to be paired with sensitive devices and used in
applications that otherwise require circuits such as isolators, isolation amplifiers or attenuators.
Key Features
Easy integration with sensitive reflective
components, e.g. mixers, multipliers
Advantages
Reflectionless filters absorb unwanted signals, preventing reflections back to the
source. This reduces generation of additional unwanted signals without the need
for extra components like attenuators, improving system dynamic range and sav-
ing board space.
Enables stable integration of wideband
amplifiers
Because reflectionless filters maintain good impedance in the stop band; they
can be integrated with high gain, wideband amplifiers without the risk of creating
instabilities in these out of band regions.
Cascadable
Reflectionless filters can be cascaded in multiple sections to provide sharper and
higher attenuation, while also preventing any standing waves that could affect
pass band signals.
Excellent power handling in a tiny surface
mount device
High power handling extends the usability of these filters to the transmit path for
inter-stage filtering.
Excellent repeatability of RF performance
Through semiconductor IPD process, X-series filters are inherently repeatable for
large volume production.
Excellent stability over temperature
With 0.ꢀ dB variation over temperature ideal for use in wide temperature range
applications without the need for additional temperature compensation.
Operating Temperature up to 105°C
Unpackaged Die form
Suitable for operation close to high power components
Enables direct integration into customer hybrids
*IPD – Integrated Passive Device, is a GaAs semiconductor process
®
Mini-Circuits
www.minicircuits.com P.O. Box 350166, Brooklyn, NY 11235-0003 (718) 934-4500 sales@minicircuits.com
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