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As Custom MMIC releases its first subharmonic mixers, we in the Applications Group thought it was important to explain some of the benefits of working with these products over fundamental mixers, particularly when mixing at very high frequencies. First, we should take a minute to explain these two types of mixers. A fundamental mixer combines an input RF signal, typically received via an antenna [...] Read More
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The distributed, or wideband, amplifier is a unique circuit in the field of high frequency microwave engineering. Its architecture can often be misunderstood, however, and this confusion can sometimes result in a non-optimal use of the amplifier. In this note, we will explain the inner workings of a distributed field effect transistor (FET) amplifier and how best to use this circuit in a microwave [...] Read More
Blogs
Introduction In part 1 of this blog series, we discussed phase noise and how it can affect the performance of direct down conversion receivers and radars systems  In part 2, we'll discuss what can be done to lessen the effects of phase noise in your microwave systems using Custom MMIC's solutions.  Amplifiers and Phase Noise One obvious place to limit phase [...] Read More
Blogs
Introduction Phase noise is rapidly becoming the most critical factor addressed in sophisticated radar and communication systems. This is because it is the key parameter defining target acquisition in radars and spectral integrity in communication systems. There are many papers detailing the mathematical derivation of phase noise but few mention the reasons for its importance. In part 1 of this two [...] Read More
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On December 1, 2017, Broadcom announced obsolescence of over 1,000 part numbers from the former Avago brand product catalog, including the remainder of their millimeter-wave IC or MMIC devices. And this December 2018 is Broadcom's last shipment month for Avago MMICs.  Custom MMIC is aware of various and continued industry-wide obsolescence of GaAs and GaN MMIC amplifiers and other [...] Read More
Blogs
c. 2013, when Bailey Brooks, a six-year old School of the Air student who lives on a cattle station 400 kilometres (250 mi) from Alice Springs, won a competition to draw a picture of how a satellite could benefit rural Australians, little did she know that her drawing of a rocket would later be printed on the payload fairing of what she and her classmates dubbed the “Sky [...] Read More
Blogs
The power of GaN MMIC technology is strongest when applied to RF power amplifier MMICs. Here we quickly review some of our power amplifier MMIC successes with GaN. The CMD262 is a 5 W GaN MMIC power amplifier die ready for Ka-band systems where high power and high linearity are a must. This MMIC amplifier delivers greater than 26 dB gain with a corresponding output 1 dB compression point of +37.5 [...] Read More
Blogs
Building on our previous blog on pulse recovery testing, we present the measurements of pulse recovery time for a commercially available GaN MMIC amplifier with a 5 to 9 GHz bandwidth. The amplifier was assembled into a metal housing, with 2.4 mm connectors used to interface with the test equipment. Three separate units were tested, with the results being consistent among all units. Therefore, we present [...] Read More
Blogs
The Gallium Nitride (GaN) high electron mobility transistor (HEMT) is well known for its use in microwave and millimeter wave power amplifiers due to its high breakdown voltage and ability to handle high RF power. Recently, GaN technology has also been used to create low noise amplifiers (LNAs) in the microwave region, as the noise properties of GaN are similar to other semiconductor materials, most [...] Read More
Blogs
Phased-array radar systems are important instruments in national electronic defense strategies. From the large, ship-based systems that scan for distantly launched missiles to the more compact arrays installed on fighter aircraft and unmanned aerial vehicles (UAVs), electronic phased-array radars come in many sizes and forms, providing reliable signal detection and identification. These modern systems [...] Read More
Blogs
Low Noise Amplifiers (LNAs) are a critical component in virtually all radar, wireless communications and instrumentation systems. But while the noise figure (NF) performance is often your primary focus, other microwave system considerations related to performance and size, weight, power and cost (SWaP-C) can be equally, if not more important. In this blog we’ll describe a few other key characteristics [...] Read More
Blogs
According to the new market research report Low Noise Amplifier (LNA) Market by Frequency (<6 GHz, 6-60 GHz, and >60 GHz), Material (Silicon, Silicon Germanium, Gallium Arsenide), Vertical (Consumer, Telecom, Military, Industrial, Automotive and Medical), and Geography - Global Forecast to 2023", published by Markets and Markets (TM), the market is expected to grow from USD 1.17 Billion [...] Read More
Blogs
Just like clockwork, come late spring the buzz surrounding the International Microwave Symposium reaches its height. And, it was no different this year with the engineers and executives at Custom MMIC. Especially, as this year’s IMS 2017 in Honolulu, Hawaii, had a deep focus in the evolution of 5G and enabling technologies. As a premier designer and supplier of performance driven RF/microwave [...] Read More
Blogs
In comparison to depletion mode amplifiers, which require a bias sequencing circuit that ensures the negative gate voltage is applied before Vdd, enhancement mode amplifiers developed by Custom MMIC allow Vdd to be applied at any time with no current draw until the enable line is energized. In addition to removing the complex bias sequencing circuitry, the all-positive bias approach also eliminates [...] Read More

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300 Apollo Drive
Chelmsford, MA 01824
Phone: 978-467-4290
Fax: 978-467-4294

Terms and Conditions
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©2006-2019 Custom MMIC
All rights reserved.

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