433 Spring Antenna Built-In Helical Antenna High Gain Spring
Antenna High Gain 433mhz Antenna
Product introduction
Parameters:
| Place of Origin | Jiangsu,China |
| Brand Name | SYH |
| Model Number | SYH-H010 |
| Frequency | 433(MHz) |
| Wire OD | 0.8mm |
| V.S.W.R | ≤1.5 |
| Gain | 3dbi |
| Antenna length | 37mm |
| MOQ | Small quantity can be accepted |
| Sample | Sample can be provided for evaluating |
| Sevice | OED ODM accepted |
| Delivery Time | 3-15 days upon receipt of payment |
| Packaging | One product with one PE bag packaging , then outside carton |
| Test | 100% tested before goods sent out |
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.
