Separating filters for embedding in the radio. Scheme, description

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Separating filters for embedding in the radio. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Tone, volume controls

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Separating filters for embedding in the radio. Scheme

Author: A. Shikhatov; Publication: bluesmobile.com/shikhman

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Latest news of science and technology, new electronics:

Alcohol content of warm beer 07.05.2024

Beer, as one of the most common alcoholic drinks, has its own unique taste, which can change depending on the temperature of consumption. A new study by an international team of scientists has found that beer temperature has a significant impact on the perception of alcoholic taste. The study, led by materials scientist Lei Jiang, found that at different temperatures, ethanol and water molecules form different types of clusters, which affects the perception of alcoholic taste. At low temperatures, more pyramid-like clusters form, which reduces the pungency of the "ethanol" taste and makes the drink taste less alcoholic. On the contrary, as the temperature increases, the clusters become more chain-like, resulting in a more pronounced alcoholic taste. This explains why the taste of some alcoholic drinks, such as baijiu, can change depending on temperature. The data obtained opens up new prospects for beverage manufacturers, ... >>

Major risk factor for gambling addiction 07.05.2024

Computer games are becoming an increasingly popular form of entertainment among teenagers, but the associated risk of gaming addiction remains a significant problem. American scientists conducted a study to determine the main factors contributing to this addiction and offer recommendations for its prevention. Over the course of six years, 385 teenagers were followed to find out what factors may predispose them to gambling addiction. The results showed that 90% of study participants were not at risk of addiction, while 10% became gambling addicts. It turned out that the key factor in the onset of gambling addiction is a low level of prosocial behavior. Teenagers with a low level of prosocial behavior do not show interest in the help and support of others, which can lead to a loss of contact with the real world and a deepening dependence on virtual reality offered by computer games. Based on these results, scientists ... >>

Traffic noise delays the growth of chicks 06.05.2024

The sounds that surround us in modern cities are becoming increasingly piercing. However, few people think about how this noise affects the animal world, especially such delicate creatures as chicks that have not yet hatched from their eggs. Recent research is shedding light on this issue, indicating serious consequences for their development and survival. Scientists have found that exposure of zebra diamondback chicks to traffic noise can cause serious disruption to their development. Experiments have shown that noise pollution can significantly delay their hatching, and those chicks that do emerge face a number of health-promoting problems. The researchers also found that the negative effects of noise pollution extend into the adult birds. Reduced chances of reproduction and decreased fertility indicate the long-term effects that traffic noise has on wildlife. The study results highlight the need ... >>

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Vector network analyzer up to 26,5 GHz from Rohde & Schwarz 03.02.2021

A new product from Rohde & Schwarz is the R&S ZNH, a complete two-port handheld network analyzer with AFT/antenna analysis and full S-parameter measurements. Both of these functions are available in the basic version. The R&S ZNH is easy to operate, highly configurable and compact, ideal for field testing.

The R&S ZNH is a handheld vector network analyzer that allows you to identify faulty RF cables and communication system components. The R&S ZNH can also measure microwave components in the laboratory and in the field up to 26,5 GHz. The R&S ZNH is a reference instrument for standard measurement tasks such as cable and antenna analysis and full two-port S-parameter measurements. The analyzer has built-in receiver step attenuators on both test ports, which prevents them from possible overload. The R&S ZNH four-receiver architecture supports the Unknown Jumper Calibration Method (UOSM). Best-in-class RF performance and analyzer features such as low path noise (0,0025 RMS), 100 dB dynamic range, 0 dBm output power, and 16001 measurement points make the R&S ZNH ideal for launching and maintaining communication and research systems microwave components.

Additional R&S ZNH options such as power measurement, pulse measurement, absolute power measurement and power ratio measurement allow you to perform maintenance and repair work on radar or satellite systems. These possibilities are opened in the network analyzer by entering a special digital key that can be entered by the user himself.

The analyzer's weight of only 3 kg., small size, no active cooling, long battery life and easy-to-use, even with gloves, instrument keys make the R&S ZNH an ideal instrument for field work. The 7-inch multi-touch screen works with gesture support similar to modern smartphones, which reduces the time of work and intuitively increases the speed of getting used to the device interface. Also in the analyzer there is a function of the assistant for setting up and configuring the measuring setup. The free InstrumentView and MobileView software allows you to immediately transfer the received information in the field to the laboratory for simultaneous analysis.

On top of all this, the R&S ZNH handheld analyzer is perfect for design offices, production lines and educational institutions with a limited budget and lack of space to place the instrument when measuring components such as filters, amplifiers, RF cables, adapters and antennas.

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