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    • Tech Notes


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Directional Couplers

Home / Bias Tees /
0
6
By Marki Microwave
In Bias Tees, Directional Couplers, Equalizers, Filters/Diplexers, Limiters, Power Dividers
Posted August 29, 2022

Debugging Surface Mount Footprints with Time-Domain Reflectometry

By Kyle Chang As microwave designers push surface mount systems to higher frequencies of operation, the detailed layout of circuitry on a surface mount board becomes more important. This is [...]

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 Cryogenic Performance of Marki Microwave Products
0
33
By Marki Microwave
In Baluns, Bias Tees, Directional Couplers, Filters/Diplexers, Power Dividers, Quadrature Hybrids
Posted October 11, 2019

Cryogenic Performance of Marki Microwave Products

Several times per month we are asked about the feasibility of using Marki Microwave products at cryogenic temperatures for various research applications. Many customers have purchased various [...]

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 Power Handling
2
104
By Victoria Tran
In Amplifiers, Baluns, Bias Tees, Directional Couplers, Mixers
Posted January 22, 2018

Power Handling

Maximum power handling is a common concern of our customers. Nothing is worse than plugging in an expensive device only for it to be immediately destroyed. Understanding power handling is [...]

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 How to Determine the Maximum Power Handling of an RF/Microwave Directional Coupler
0
38
By Wei Liang
In Directional Couplers, Quadrature Hybrids
Posted September 15, 2016

How to Determine the Maximum Power Handling of an RF/Microwave Directional Coupler

The most common question we receive about our stripline directional couplers, low loss airline directional couplers, and high directivity directional bridges is ‘How much power can it handle?’. [...]

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 Top 7 Ways to Create a Quadrature (90˚) Phase Shift
9
28
By Doug Jorgesen
In Directional Couplers, IQ-IR-SSB Mixers, Quadrature Hybrids
Posted April 15, 2015

Top 7 Ways to Create a Quadrature (90˚) Phase Shift

We’ve talked a lot about IQ mixers in the last few posts, about their theoretical underpinnings and applications as a phase detector and phase modulator. In upcoming posts we will discuss [...]

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1
24
By Doug Jorgesen
In Directional Couplers, Mixers, Multipliers, Power Dividers, Quadrature Hybrids
Posted February 12, 2014

Suppression vs. Isolation

In making the datasheets for the first Microlithic frequency doubler (MLD-1640), it occurred to us that not enough has been made about the difference between isolation and suppression. In mixers [...]

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0
20
By Doug Jorgesen
In Directional Couplers, Quadrature Hybrids
Posted March 28, 2012

Directional vs Dual Directional Microwave Couplers

This will be in an upcoming app note, but I couldn’t find a good explanation on the internet of the difference between a directional coupler and a dual directional coupler, so here it is: A [...]

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