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Technical Articles

Marki Microwave, Inc. has published these technical articles:

(RF, Microwave, and Wireless Components)
From this Article:
Until recently, MMIC has not been considered a viable technology for filter development due to misconceptions about the technology, including development time, cost and suitability for custom...
(RF, Microwave, and Wireless Components)
From this Article:
Microwave mixers translate the frequency of electromagnetic signals. This functionality is vital for an enormous number of applications ranging from military radar and surveillance to radio astronomy...
(RF, Microwave, and Wireless Components)
From this Article:
The balun has a long and illustrious history, first documented in the literature as a device to feed the television transmitting antenna for the Empire State Building1 in 1939. Since then designs have...
(RF, Microwave, and Wireless Components)
From this Article:
The characterization of microwave networks requires discriminating between forward and backward traveling waves. Unfortunately no directional device is perfect, leading to potentially dramatic...
(RF, Microwave, and Wireless Components)
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The goal of this application note is to introduce IQ, single sideband (SSB), and image reject (IR) mixers in both theory and practice. We will discuss basic applications, the concepts behind them, and...
(RF, Microwave, and Wireless Components)
From this Article:
The IQ mixer is the backbone of modern communications architectures, as well as advanced vector signal analyzers for electronic warfare and test and measurement receivers. The backbone of the IQ mixer...
(RF, Microwave, and Wireless Components)
From this Article:
One of the unique products that we have at Marki Microwave is our broadband, high isolation 3-way and 4-way power dividers. In this blog post we will answer some common questions we receive. Generally...
(RF, Microwave, and Wireless Components)
From this Article:
A novel, multi-octave differential (180?) power divider is described. The power divider circuit is based on a new kind of Magic-T circuit composed of a balun and two parallel coupled transmission...
(RF, Microwave, and Wireless Components)
From this Article:
In our last post we showed the physical basis for how mixers are used as phase detectors, concluding by showing that IQ mixers make ideal phase detectors due to their ability to unambiguously identify...
(RF, Microwave, and Wireless Components)
From this Article:
We get a lot of questions about phase noise and noise figure, and it is a topic of interest for Ferenc Marki. The question comes up often, what kind of noise does the mixer add during the conversion...
(RF, Microwave, and Wireless Components)
From this Article:
As detailed in our Mixer Basics Primer, the isolations of a mixer refer to how well a balanced mixer cancels out each of the arms inputs from the outputs of the other arms. There are three isolations...
(RF, Microwave, and Wireless Components)
From this Article:
There are many ways to think about IQ modulation, and all of them rely on math. This is because 'quadrature' modulation is a mathematical construct, a way of thinking about how time domain signals can...
(RF, Microwave, and Wireless Components)
From this Article:
The LO to RF isolation of a mixer is a critical performance specification in most broadband applications. LO feedthrough can not only contaminate a system, but the noise fed from the LO path can...
(RF, Microwave, and Wireless Components)
From this Article:
Microwave designs are pushing towards an all surface mount future, due to reduced assembly complexity and cost and reduced system size. Marki Microwave is pushing this technology by offering many of...
(RF, Microwave, and Wireless Components)
From this Article:
In my previous tech note exploring TDR as a method for optimizing surface mount footprints, we determined the root cause of the evaluation circuit's performance degradation and added an inductive...
(RF, Microwave, and Wireless Components)
From this Article:
Power dividers and couplers are straightforward passive components. It is the attention to design detail, execution of the design, and quality of the fabrication which leads to a high performance...
(RF, Microwave, and Wireless Components)
From this Article:
Limiters are critical components in the front end of nearly every modern RF receiver. As system level requirements of modern transceivers become more stringent, this drives a need for RF components...
(RF, Microwave, and Wireless Components)
From this Article:
When you master phase, you become like a God, capable of performing wonders that mere mortals can only dream of. Wonders like making laser beams (using phase engineered quarter-wave reflectors),...
(RF, Microwave, and Wireless Components)
From this Article:
Intermodulation distortion (IMD) suppression is a critical issue in modern military and commercial RF/microwave systems. Pressed by the demands imposed by distortion-sensitive digital modulation...
(RF, Microwave, and Wireless Components)
From this Article:
Every day we work on high linearity mixers: high IP3, high P1dB, and high spurious suppression. Every once in a while we get a request for a high IP2 mixer. This is much more rare than complaints...