Anti Vibration 37mm 3dBi 433MHz Spring Antenna Communications Accessories

Anti Vibration 37mm 3dBi 433MHz Spring Antenna

Parameters:

Spring antenna action

Spring antenna is a very important part in wireless communication, its role is to radiate and receive radio waves. When transmitting, convert high-frequency current into electromagnetic wave; when receiving, convert electromagnetic wave into high-frequency current. Simply put, it is to accept the transmitted signal.

Spring antenna classification

1. Classified by frequency: 315MHz spring antenna, 433MHz spring antenna, 868 / 915MHz spring antenna, 470 / 490MHz spring antenna.

2. Classified by material: gold-plated spring antenna, copper spring antenna, nickel-plated spring antenna.

What are the advantages and disadvantages of spring antenna

Advantage: The cost of the spring antenna is lower than other antennas, and the size is small, easy to install, the antenna standing wave ratio performance is good, and has good anti-vibration and anti-aging capabilities. The wireless module is used in conjunction with the antenna to make the wireless transmission distance farther.

Disadvantages: its gain is relatively small, and it is not waterproof, generally used as a built-in antenna.
Generally, the antennas used in wireless modules are: spring antennas, rod antennas, and sucker antennas. The sucker antennas are relatively more expensive than springs and rod antennas. When choosing an antenna, it depends on whether the parameters such as frequency, gain, impedance, standing wave ratio, material, and size meet your needs.

1. Tips for spring antenna selection

Spring antennas can be divided into nickel-plated, gold-plated and copper spring antennas according to their materials. Generally, there are 315/490/868 / 915MHz spring antennas according to frequency. Selection skills: When choosing a spring antenna, you can see its size, length, gain, impedance, material, frequency, standing wave ratio and other parameters according to the actual project requirements.

2. Tips for rod antenna selection

According to the connection method of the antenna head, the rod antenna can be divided into: straight rod antenna, elbow rod antenna, folded rod antenna; according to the material classification: gold plated, nickel plated rod antenna. Selection skills: According to the module frequency used in the project, you can choose the rod antenna of the corresponding frequency, and pay attention to whether the length of the rod antenna, the connection method of the antenna head, the material, gain, impedance, standing wave ratio, etc. match.

3. Suction cup antenna selection skills

According to the frequency, it can be divided into 315/433/490/868 / 915MHz sucker antenna and 2.4G small sucker antenna. Selection skills: If the power of the module is more than 2W, it is recommended to choose a suction cup antenna, and whether the project is waterproof, considering the parameters of cable length, input impedance, standing wave ratio, gain, suction cup size and other parameters.

Estlonda founded in 2003, its predecessor was Longhua Estlonda Electronics Factory in Baoan District, Shenzhen. It’s a national high-tech enterprise which is engaged in the research and development, production and sales of wireless communication equipment. We are also the strategic partner in the field of 5G private network and 5G multi-functional smart pole wireless communication for State Information Center (National E-Government External Network Management Center). Also as a certified enterprise by the Ministry of Industry and Information Technology and the National Radio Commission, and the vice president company of Guangdong High-Tech Industry Chamber, Emergency Governance Society of Shenzhen and Shenzhen Smart Street Light Association.

We are mainly focused on the R&D and manufacturing of 5G mobile phone signal jammers, 5G base station, 5G gateways, 5G core network, 5G private network, 5G public network blind filling and other communication equipment, as well as a 5G multifunctional smart pole solution provider. As the first and largest manufacturer in China to produce mobile phone signal jammers, we are with a market share more than 80%. The Chinese headquarters is located in Longhua District, Shenzhen, and the foreign headquarters is in Hannover, Germany. There are two R&D centers in Nanshan, Shenzhen and Nanjing, Jiangsu. Our R&D team is mainly composed of outstanding R&D personnel in communications from Silicon Valley in the United States and major semiconductor universities in Belgium.

With 5G technology and product research and development as the core, and relies on the 5G+ multifunctional smart pole industry foundation to build smart cities, smart campuses, smart parks, smart scenic spots, smart emergency, smart roads, smart ports, smart mines, smart ports, smart factories, smart terminals, and etc., we provide research and development, production of 5G core network, 5G base station, 5G gateway and other private network communication equipment, and 5G global private network solutions, provide 5G private network services for digital factories, digital parks, digital governments, and digital China, to solve the communication and interconnection problems in various places without communication methods and network signals.

As a leading wireless communication equipment manufacturer and solution provider, our products and solutions have been widely used in schools, prisons, troops, conferences, confidentiality, enterprises, finance, electricity, coal mines, public security, hospitals, ports, government agencies, transportation systems and other fields, in the same track with Huawei and ZTE. It has participated in the formulation of national standards many times, obtained a number of patents and soft works, and has passed the ISO9001 international quality management system. It is a qualified supplier of China Mobile Communications.

In addition to in-depth cooperation with China's four major carriers, central enterprises, and state-owned enterprises, we also participates in the testing and construction of 5G public networks of telecom operators in Hong Kong Telecom, Brunei, Palau, Southeast Asia and other countries. In the future, we will also cooperate with partners to participate in overseas operators testing and construction of 5G communication network.