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Trying to eliminate or suppress the interference of electronic circuits is a problem that always needs to be solved in circuit design and application. The sensor circuit is usually used to measure weak signals and has high sensitivity. If the influence of various interferences cannot be resolved, it will bring large errors to the circuit and its measurement, and even cause the circuit to be overwhelmed by the interference signal. Can not work normally. Here, the internal noise and external...
In-depth analysis of the first-level cache and second-level cache of the technical zone CPU eMMC mass burning dilemma, do you really know? Isolation flyback and non-isolated BUCK application design plan Schottky barrier diode selection and application guide How to use Altium in program design Designer puzzle? Follow WeChat Interesting and informative information and technical dry goods Download Audiophile APP Create your own personal electronic circle Follow the audiophile class Lock the latest...
There are many types of SPSS products, from base to its expansion modules and various application working platforms independent of base, which makes people feel complicated. Here, we simply proceed from the methodology of data analysis and categorize SPSS products according to the various steps of data analysis. The vast array of SPSS products often leaves users feeling perplexed, given the diverse range of offerings from the fundamental base software to its numerous expansion modules and a...
Center focusing satellite antenna The center-focused satellite antenna is generally called a positive-focus antenna, also known as a parabolic antenna. No matter how deep or shallow, the radius of the antenna disk surface is parabolic. The center-focus antenna is characterized by a perfect circular disk surface, and the LNB is placed at the center focus of the antenna. The position can be divided into deep and shallow dishes.If the antenna of the same size is shorter, the disk surface is deeper...
KH30251 type wideband whip active antenna user guide With the establishment and development of electromagnetic compatibility specifications, the detection of interference signals from weak electromagnetic fields in space is very necessary. The antenna coefficients (also called effective antenna heights) of passive whip antennas (for measuring electric fields) and loop antennas (for measuring magnetic fields) are in the frequency range of 9KHz ~ 30MHz, and their antenna coefficients are about...
The isolation between the receiving and service antennas is a crucial parameter in the installation and operation of a repeater system. It is imperative to ensure adequate isolation to prevent unwanted interactions between these two components. If the isolation is inadequate, it can lead to a problematic scenario where the service antenna and the receiving antenna form an unintentional closed-loop amplification system. This closed-loop system can cause the repeater to enter a state of cyclic...
JC-2 circuit diagram of the front Mark Levisin Phono preamp module is an audio device whose main function is to amplify the low-level signal generated by the cartridge (such as on a vinyl record player) so that subsequent audio devices (such as power amplifiers, speakers, etc.) can receive a strong and clear enough audio signal. Main functions: Amplify the signal: The Phono preamp module can receive the weak signal generated by the cartridge and amplify it to a sufficient level for subsequent...
Currently, there are three antenna manufacturing technologies: etched / punched antenna, printed antenna and printed antenna. Among them, the winding and printing technology has been widely used in mainland China, and most RFID tag manufacturers in Taiwan also use this technology; and the etching technology is mainly used in Europe, while in Taiwan, there are only a few flexible circuit boards The factory has the ability to use this technology to manufacture RFID tags. The winding technology...
gps navigation schematic The schematic diagram of the GPS navigation system usually shows its main components and how they interact with each other: Space Segment It consists of a group of satellites, usually including multiple satellites in orbit, such as the GPS system contains more than 24 satellites. These satellites send radio signals containing information such as location and time to the ground. Ground Control Segment Responsible for monitoring and controlling satellites in the space...
JC-2 circuit diagram of the front Mark Levisin Click to enlarge drawing Phono preamp module is a device used to boost the weak analog signal captured from the cartridge (such as the pickup of a record player) to a line-level signal suitable for subsequent audio equipment processing. Role and Function: The main role of the phono preamp module is to amplify the low-level, high-impedance signal output from the cartridge to a standard line-level signal level. It usually includes RIAA (Recording...
GPS receiver schematic GPS Receiver Schematic Overview Antenna GPS receiver receives signals from GPS satellites through antennas. The antenna is responsible for capturing weak satellite signals. RF Front-end Converts the radio frequency (RF) signal captured by the antenna to an intermediate frequency (IF) or baseband signal. May contain a low noise amplifier (LNA) to increase signal strength, and filters to reduce interference. Digital Signal Processor (DSP) Digitizes the intermediate...
Abstract: Half-chip technology is an effective way to reduce component packaging losses and increase component power. This article studies from two aspects: power increase of half-cell battery module and shadow shading of cell. The experiment compared the electrical parameters of 144 half-chip polycrystalline modules and 72 full-chip modules. The experiment shows that the half-chip module made with the same efficiency battery has 9W higher power than the conventional whole-chip module, and Imax...
Antenna distribution matching method The picture shows the matching connection of two TV sets sharing an antenna. It is assumed that the impedance of the antenna and the TV are both symmetrical 300Ω. The Antenna Distribution Matching Method is a crucial aspect of ensuring efficient signal transmission and reception in broadcasting systems. As depicted in the picture, when two TV sets share a common antenna, it becomes essential to establish a proper matching connection between the antenna and...
introduction Closed-circuit television monitoring systems (CCTV) are increasingly used in construction projects. Due to the complex electrical environment in the building, various sources of interference are prone to form. If appropriate precautions are not taken during the construction process, various interference It will enter the closed-circuit television monitoring system through the transmission cable, resulting in the degradation of video image quality, system control failure, unstable...
A vertically polarized antenna resembling a folded oscillator, called the "SLIM JIM" antenna, has been widely used in the field of professional communications. The thin J-shaped antennas of amateur communication are also favored. This "Reduced Oscillator J-Type Antenna" is shown in the figure. Its characteristics are: the radiation elevation angle is extremely low, about 0 ~ 10 °, with a gain of 3dB, twice the antenna, because the antenna itself has a matching function, it...
The picture shows the structure of the antenna. This is a planar grounded antenna. This antenna consists of a vertically excited 1/4 wavelength vibrator. The vibrator is related to an artificial ground. The artificial ground consists of four horizontally placed, and It is electrically composed of a grounded radiation rod. The angle between the radiation rod and the ground is different. The impedance presented by the antenna is also different. When it is 45 degrees from the ground plane, the...
1. When the long-wave transmission line is under high-frequency conditions, when electromagnetic waves propagate along the transmission line, due to the short wavelength of electromagnetic waves, different phenomena will occur on the transmission line than when transmitting audio signals. It must be used. . When the wavelength of the electromagnetic wave propagating along the transmission line can be compared with the geometric length of the transmission line, the transmission line at this time...
The moxon directional antenna is basically a line antenna and is made of 14 # wire. It is currently very popular abroad. The feature is only 2 units. One is the drive unit and one reflector. The structure is very simple, the mechanical size is small, the debugging and production are easy, the gain is about 6dbi, the 50 ohm feeder is directly matched, the biggest advantage is about 25dbi before and after, and the noise is small. The antenna can be made into a single band or multiple bands....
FM-DV3 dipole antenna Frequency range 87.5-108MHz Gain 6dBd Vertically polarized high-power antenna omnidirectional radiation can form a linear antenna array stainless steel / copper oscillator can be zero-filled and beam down tilt as required In-depth analysis of the first-level cache and second-level cache of the technical zone CPU eMMC mass burning dilemma, do you really know? Isolation flyback and non-isolated BUCK application design plan Schottky barrier diode selection and application...
Introduction of mobile MIMO technology As early as ten years ago, multi-input and multi-output (MIMO) radio architecture has been applied in Wi-Fi 802.11n products. When this technology was introduced, by taking advantage of the unique main body advantages of the multi-transceiver radio frequency system, the performance and coverage of the existing Wi-Fi network were greatly improved. However, the realization of its high-performance design is at the expense of large models and high power...
[Wei Bing] As the popularity of the V / U band increases, homemade Yagi antennas have become a hot topic again. In the 1920s, Hideki Yagi and Uda Taiya of Tohoku University invented this kind of antenna, which is called "Yagi Uda antenna", or "Yagi antenna" for short. Yagi antennas are really easy to use. It has good directivity and higher gain than dipole antennas. Use it to measure direction, long-distance communication is particularly good. If it is equipped with...
According to the latest report from a foreign media, Nokia recently cooperated with Canadian operator Bell Canada to complete the first 5G network technology test. In the test, the 73Ghz spectrum range was used. The test data shows that the 5G network speed is about 6 times that of the existing 4G network in Canada. Steven Howe, chief technology officer and executive vice president of Bell Canada, said that Bell is working closely with Nokia and other partners around the world to build a...
My GP antenna-please go to the work area to view the picture In-depth analysis of the first-level cache and second-level cache of the technical zone CPU eMMC mass burning dilemma, do you really know? Isolation flyback and non-isolated BUCK application design plan Schottky barrier diode selection and application guide How to use Altium in program design Designer puzzle? Follow WeChat Interesting and informative information and technical dry goods Download Audiophile APP Create your own personal...
Model NO.: camouflage tree tower Condition: New Wind Speed: 50m/S Anti-Corrosion: Hot Galvanized Connect Way: Plug-in or Flange Trademark: Tengyang Transport Package: Inner: Flexible Package; Outer: 20gp or 40gp Specification: 10m-60m Origin: Hebei, China Model NO.: camouflage tree tower Condition: New Wind Speed: 50m/S Anti-Corrosion: Hot Galvanized Connect Way: Plug-in or Flange Trademark: Tengyang Transport Package: Inner: Flexible Package; Outer: 20gp or 40gp Specification: 10m-60m Origin:...
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.