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Passive Components

A Deterministic Method for Optimizing VSWR

By using in conjuction both frequency and time domain reflection measurements, it is possible to positively identify the specific circuit discontinuities that contribute to a given VSWR lobe. Corrective action can then be readily determined for optimum...
Improving VSWR is typically an iterative trial-and-error exercise when utilizing either frequency or time domain information. For example, while circuit modifications which decrease time domain reflectometry (TDR) "bumps" (discontinuities) are generally a good thing, decreasing a specific TDR bump does not necessarily improve VSWR within a frequency band of...
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An X-band, Low Cost, LTCC Double-balanced Mixer

Double-balanced mixers are used extensively in transmitters and receivers. For frequencies above 5 GHz the designs are normally realized using strip line and microstrip techniques. This is because distributed element baluns become smaller in size and more attractive for design as the frequency increases. Semiconductor-based mixers are the most...
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Adding a Low Data Rate Radio ASSP to an ISM Application

A variety of low data rate, low power and low cost radio ICs are available for use in industrial, scientific and medical (ISM) applications. A basic understanding of radio operation and the relevance of standard and proprietary protocol specifications ...
There is good news for those thinking about adding wireless communications to their industrial, scientific, or medical (ISM) application. A variety of low power, low cost radio ASSPs are available that can provide wireless features specifically for ISM applications. Fortunately, you do not need to be a communications specialist...
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A High Frequency Broadband Filter

X2Y® technology is a new balanced component capable of high frequency performance across a broad frequency range. The component uses a standard ceramic capacitor with subtle, but important modifications to its structure. These structural changes create a circuit inside the capacitor that is capable of broadband electromagnetic interference (EMI)...
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High Frequency Prescalers for Advanced Synthesizer Applications

Modern digital communications, instrumentation, electronic warfare and radar systems require high frequency and/or broadband synthesizers that are stable in frequency and exhibit low phase noise at frequencies up to 50 GHz. Prescalers are typically used in phase-locked loop circuits for these synthesizer applications. A prescaler converts the RF input...
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Miniaturized Ferrite Switch Networks

Ferrite switching networks have a wide variety of uses in commercial and military, space and terrestrial, and low and high power applications. These include low noise amplifier (LNA) redundancy switches, T/R modules, high power isolators and switch matrices. Ferrite switches are desirable for these applications due to their high...
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