Passive Components

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When looking for a coaxial microwave switch that can handle moderate power levels, the options considered are likely to be a PIN diode switch or an electromechanical switch. Both of these switch types have been well engineered over the years, but still suffer from inherent disadvantages. The PIN diode...

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...

Two broadband satellite networks are in the final stages of development and plan a service launch for North America in early 2004. Systems like these are expected to provide wideband, high speed communications for Internet and multimedia applications across North America and Europe for years to come. High power...

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...

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)...

A versatile new three-stage buffer amplifier has been introduced that is ideal for use as a receiver front end low noise amplifier, but, as a result of its dual bias configurations, it can also be used as a driver amplifier or LO buffer with good linearity and higher gain....

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...

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...

Monopulse (or simultaneous lobing) radars quickly gained popularity after their 1943 introduction by the US Naval Research Laboratories. Their principal benefit - the ability to obtain complete range, bearing, azimuth and elevation angle information from the return of a single pulse - is very appealing in applications such as...

Modern communication systems often require narrow band filters presenting high selectivity and low insertion loss. When there are also stringent requirements on the overall dimensions of the filtering structure, it could become very problematic to select a suitable class of resonators having at the same time compactness and large...