A dipole antenna is a type of antenna that is widely used in RF (Radio Frequency) communications and wireless systems. It is a basic form of antenna that consists of two conductive elements (usually metal rods) positioned parallel to each other and separated by a small gap. The length of the elements is typically half the wavelength of the desired radio frequency. The dipole antenna can be oriented horizontally or vertically, depending on the specific application and antenna design. When driven by an RF signal, the current alternates back and forth, creating an oscillating electromagnetic field around the antenna. This field radiates energy into space, allowing the antenna to send or receive radio waves. Dipole antennas are commonly used in various RF applications, including: Radio broadcasting: Dipole antennas are used to transmit and receive radio signals for radio stations, enabling the broadcast of audio content. Wireless communication: They are employed in wireless systems such as Wi-Fi, Bluetooth, and cellular networks for transmitting and receiving data between devices. TV reception: Dipole antennas, often called "rabbit ears," are frequently used for receiving over-the-air television signals. Amateur radio: Dipole antennas are popular among amateur radio enthusiasts due to their simplicity and efficiency in transmitting and receiving signals. Radar systems: Dipole antennas are utilized in radar systems for detecting and tracking objects by transmitting and receiving radio waves. Dipole antennas offer a relatively simple and cost-effective solution for RF communication systems. However, their performance and efficiency depend on factors such as the antenna design, frequency of operation, and environmental conditions. More complex antenna designs, such as yagi antennas and phased array antennas, have been developed to enhance directional properties and achieve specific radiation patterns.

A communication antenna is a device designed to transmit and receive electromagnetic signals for communication purposes. It is a crucial component in various communication systems such as radio, television, cellular networks, satellite communication, and wireless communication. There are different types of communication antennas, each with its own design and functionality. Some common types include: Dipole antenna: A dipole antenna consists of two conductive elements that are symmetrically aligned and energized with an alternating current. It is one of the simplest and most common antenna types, used for a wide range of applications, including radio broadcasting, Wi-Fi networks, and amateur radio. Yagi antenna: The Yagi antenna, also known as a Yagi-Uda antenna, is a directional antenna with multiple elements arranged in a specific pattern. It is commonly used for long-distance communication or point-to-point communication. Yagi antennas are widely employed in TV reception, wireless communication, and radar systems. Parabolic reflector antenna: This type of antenna uses a parabolic reflector, which is a curved surface that reflects and focuses electromagnetic waves. The reflector is usually a metal dish, and it gathers incoming radio waves and directs them towards a small feed antenna at its focal point. Parabolic reflector antennas are commonly used in satellite communication systems and microwave links. Patch antenna: Patch antennas are low-profile antennas made of a flat radiating patch and a ground plane. They are typically used for applications such as wireless communication, RFID systems, and GPS devices. Patch antennas are often found in smartphones, tablets, and wireless routers due to their compact size and ease of integration. Helical antenna: Helical antennas are three-dimensional antennas with a helix-shaped wire wound around a central support rod. They are known for their circular polarization and wide bandwidth capabilities. Helical antennas find applications in satellite communication, RFID systems, and wireless microphone systems. These are just a few examples of communication antennas, and there are many other types available, each with specific advantages and applications. The selection of an appropriate antenna depends on factors such as the desired frequency range, coverage area, directivity, and environmental constraints.  

Base station antenna, an integral part of the base station antenna feed system, is also an important part of the mobile communication system. Base station antennas are generally divided into indoor antennas and outdoor antennas. Indoor antennas usually include omnidirectional ceiling antennas and directional wall-mounted antennas. As the name suggests, omnidirectional antennas can send and receive signals in 360° without dead angle, outdoor omnidirectional antennas, and ceiling antennas for indoor coverage.

Plate antenna is a kind of common wireless communication antenna, which is widely used in wireless communication system with the following main functions: Signal radiation: plate antennas can convert electrical signals into electromagnetic wave signals and radiate them into space. These radiated electromagnetic wave signals can transmit and receive information to achieve wireless communication. Directional radiation: Plate antenna can produce directional radiation, i.e., the radiated power is concentrated in a specific direction. By adjusting the design parameters of the plate antenna, such as the shape, size and distribution of the radiating elements, a specific directionality of radiation can be realised, which improves the efficiency and reliability of signal transmission. Gain enhancement: Plate antennas can provide high antenna gain. Antenna gain is the increase in radiated power relative to a reference antenna (e.g., an equivalent omnidirectional radiating antenna). Through proper design and optimisation, plate antennas can achieve higher gain, thus enhancing the transmission distance and coverage of the signal. Multi-antenna system: The plate antenna can be used in combination with other antennas to form a multi-antenna system. Multi-antenna system can improve the reliability and capacity of wireless signal by using the space diversity effect between antennas. Through the reasonable arrangement of plate antenna, it can achieve spatial multiplexing, beam fouling and other technologies, so as to improve the performance of wireless communication system. In conclusion, the functions of plate antenna include signal radiation, directional radiation, gain enhancement and construction of multi-antenna system. These functions make the plate antenna an important component widely used in wireless communications.

We will go to barcelona to attend the MWC Barcelona 2024 Date∶Feb 26-29,2024 Place: Av. Joan Carles I, 64 08908 L’Hospitalet de Llobregat, Barcelona Stand Number:5i6   Will show our latest high gain omni antenna, panel antenna,yagi antenna,etc. also power splitter, combiner, coupler filter etc. 

Car antennas play a crucial role in ensuring seamless communication and entertainment during travel. These antennas come in various types, including traditional whip antennas, shark fin antennas, and integrated antennas. Whip antennas are the most common, protruding from the vehicle’s body, while shark fin antennas offer a sleeker design and better aerodynamics. Integrated antennas are discreetly embedded within the vehicle’s structure. Antenna types vary based on factors like frequency range, signal strength, and aesthetic appeal. Understanding these differences helps drivers choose the right antenna for their needs, ensuring optimal connectivity and entertainment on the road.

VHF and UHF are frequently used in the field of radio communication, especially in the vehicle antenna plate, and the U/V band is more widely used. This paper will further introduce the relevant knowledge points of this band. (1) Noun explanation VHF, also known as meter wave band, is the abbreviation of Very High Frequency. The frequency band ranges from 30 MHz to 30～300MHz, and the wavelength of radio waves is 10 ~ 1m. UHF is called decimeter wave band, which is the abbreviation of Ultra High Frequency. The frequency band range is 300 ~ 3000 MHz, and the radio wavelength is 1m ~ 1dm. (2) the difference between the two The V-band antenna has the highest production rate among amateur radio enthusiasts, including various high-gain directional and omnidirectional antennas, mobile whip antennas in vehicles and compact handset antennas. There is basically no reflection on the ionosphere of the signal in this frequency band, and the electric wave mainly propagates in the line-of-sight of direct waves. When encountering a large building or mountain during transmission, it will generate reflected waves, so it can only be used as short-distance communication. The penetration of U-band is better than that of V-band. U-band is widely used in cities, but it is still not suitable for long-distance communication. Because this frequency band has high frequency and low noise, it can be set in cars.

Parabolic antenna is a single reflector type antenna, which utilizes an axisymmetric rotating paraboloid as the main reflecting surface, and places the feed source at the focal point F of the paraboloid, and the feed source usually adopts a horn antenna or an array of horn antennas. When transmitting, the signal is radiated from the feed source to the paraboloid, and then reflected from the paraboloid and radiated into the air. Since the feed source is located at the focus of the paraboloid, the wave is reflected by the paraboloid and then radiated parallel to the paraboloid normal. When received, the wave is reflected by the reflecting surface and converges to the feed source, which can receive the maximum signal energy. The main advantage of parabolic antenna is strong directionality. Its function is similar to the reflector of a searchlight or flashlight, which can converge the waves into a narrow beam in a specific direction, or receive waves from a specific direction. Parabolic antennas are the most productive, meaning they produce the narrowest beamwidths regardless of antenna type. In order to achieve a narrow beamwidth, the parabolic reflector must be much larger than the wavelength of the radio wave being used, so parabolic antennas are used in the high-frequency portion of the radio spectrum (UHF and VHF) because the wavelengths are sufficiently small to be reflected through the use of reflective surfaces.

The Yagi antenna works like this (in the case of a three-unit antenna) : the Redirector is a little less than half the wavelength, the main oscillator is a little more than half the wavelength, and the reflector is a little more than half the wavelength, the two oscillators are separated by a quarter of a wavelength. At this time, the inductor is“Capacitive” to the induction signal, the current is 90 ° ahead of the voltage; the electromagnetic wave induced by the inductor will radiate to the main oscillator, the radiating signal travels a quarter of a wavelength, so that a 90 ° delay cancels out the“Lead” caused by the previous one. The two phases are the same, so the signal is superimposed and strengthened. The reflector is slightly longer than half of the wavelength and is inductive, with a current lag of 90 ° and a delay of 90 ° in the process of radiating to the main oscillator. When one direction is strengthened and the other is weakened, there is a strong directionality. The same is true for the process of emission state interaction.