Industry News

Catalog Update

Product Catalog This product catalog features the company’s advanced antenna systems. It highlights new products including the Phased Beamer;™ modular phased array panels, Edge-of-Space Gateway;™ SatCom antenna system with orbital down conversion and UniScan Direct;™ and a real time airport security RF imaging scanner, all based on the company’s...
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Distributed Coupled Voltage-controlled Oscillators

CRO/SAW (coupled-resonator oscillator/surface acoustic wave) resonator-based oscillators are widely used as reference sources in phase-locked loop (PLL) applications, since the technology features very low phase noise at fixed frequencies to beyond 3 GHz. CRO/SAW oscillators are also known for high quality factor (Q) and low phase-noise performance. Unfortunately, CRO/SAW...
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The Case for Transmit Modules (TxM)

In the fiercely competitive GSM phone terminal market, terminal manufacturers have come to expect solutions that expedite their development and cycle times. Coupled with the new feature-rich handsets with mega-pixel cameras, Bluetooth® technology and multimedia functions, designers are demanding smaller and more integrated modules that consume less board space...
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A Balanced Ka-band Vector Modulator MMIC

A very broadband Ka-band vector modulator was developed using a commercial foundry to produce a high reliability MMIC for space applications. TriQuint's 0.15 mm PHEMT GaAs process was chosen for the fabrication because of its high performance, high rel...
Traditional microwave transmitter systems can be simplified by replacing up-converting mixers and associated filters with a vector modulator that directly modulates data onto a carrier signal using orthogonal I and Q control inputs for simultaneous amplitude and phase control. The versatility of the vector modulator allows unlimited modulation control...
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A Miniaturization Method of Parallel Coupled-line Filters Using Lumped Capacitors and Grounding

This article proposes a new miniaturization method for a parallel coupled-line filter using lumped capacitors and grounding. The proposed method can dramatically reduce the size of the resonators in the parallel coupled-line filter. In addition to the ...
Recently, with the rapid development and deployment of wireless communication systems, the miniaturization and performance improvement of wireless communication components have become increasingly necessary. In particular, the miniaturization of a filter, one of the core components in many radio frequency (RF) systems, has become a very important issue. Apart...
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EM Modeling and Circuit Simulation Lead to a Solution to Amplifier Oscillations

A procedure to resolve an oscillation issue in a two-stage broadband amplifier is presented based on electromagnetic (EM) modeling and circuit simulations. It is revealed that an additional inductive element of a value larger than 0.5 nH in the inter-s...
The design of either a power amplifier, low noise amplifier, narrow band amplifier or wideband amplifier has been a challenging task for the microwave engineer. Stability is the most important issue the engineer has to face. 1 It can haunt a designer, starting from the design phase, through the...
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