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AmpliVisionS announced a contract of more than 1 million dollars has been reached with a Chinese distributor.

AmpliVisionS announced a contract of more than 1 million dollars has been reached with a Chinese distributor.

AmpliVisionS, a company working at the leading edge of high power GaN solid-state amplifier research and development in China., announced a supply contract of more than one million dollars has been reached with a Chinese distributor. 
2021-04-07
SWR AND RETURN LOSS : DO THEY REPRESENT THE SAME THING?

SWR AND RETURN LOSS : DO THEY REPRESENT THE SAME THING?

Good impedance matching is required for the efficient transfer of signals between connected devices. Unfortunately a perfect match is rarely achieved. There are two common ways to express a device’s impedance mismatch: Return Loss and Standing-Wave Ratio
2021-08-31
HOW TO MEASURE NOISE FIGURE BY SPECTRUM ANALYZER AND A NOISE SOURCE

HOW TO MEASURE NOISE FIGURE BY SPECTRUM ANALYZER AND A NOISE SOURCE

Noise figure is an important parameter in many RF applications. Per its definition, Noise Figure (NF) is a measurement of the degradation of the signal-to-noise ratio (SNR) which is caused by components in a signal path. It is a number by which the perfor
2021-08-18
Decrypting the RF signal chain features and performance indicators

Decrypting the RF signal chain features and performance indicators

From a historical perspective, it was not so long ago, in the early 20th century, that RF engineering, which supported the RF signal chain, was an emerging discipline. Today, RF technology and RF devices are so deeply embedded in our lives that without th
2021-08-05
How important is peak power measurement for a radar system?

How important is peak power measurement for a radar system?

Radar systems are used in military and civil aviation, weather system tracking and automobile traffic control, etc. All these systems have several things in common, including transmitting and receiving reflected radio frequency energy from distant objects
2021-07-19
How is RF power detected?

How is RF power detected?

In today’s wireless world, RF signals are transmitted and received to effectively send data and facilitate wireless communications. Among all the parameters to consider in RF design, power measurements remain one of the most critical metrics for designers
2021-07-07
Two definitions of phase noise and brief description of test methods

Two definitions of phase noise and brief description of test methods

Phase noise is a very important radio frequency index. In a communication system, phase noise will affect the vector modulation error of the vector modulation signal and worsen the bit error rate. In radar applications, phase noise will affect the radar's
2021-06-23
How GaN improves the bandwidth and power of RF power amplifiers

How GaN improves the bandwidth and power of RF power amplifiers

The GaN revolution has swept the entire industry and allowed MMICs to generate more than 1 W of power at dozens of bandwidths. Therefore, this field dominated by traveling wave tubes in the past has begun to give way to semiconductor equipment. The emerge
2021-03-09
Challenges in solid state power amplifier testing

Challenges in solid state power amplifier testing

Solid-State Power amplifiers are very important components in wireless communication systems, which are mainly used to amplify the low-power RF signal generated by the modulation oscillator circuit to obtain enough RF output power to be fed to the antenna
2021-02-23
What should be paid attention to when testing P1dB?

What should be paid attention to when testing P1dB?

Non-linearity is a topic that cannot be avoided by RF active devices such as PA and LNA. Although it is inevitable, it is still hoped to keep it as low as possible to reduce the impact on the system. There are many parameters to measure nonlinear characte
2021-02-03
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