All categories
Featured selections
Trade Assurance
Buyer Central
Help Center
Get the app
Become a supplier
(1159 products available)
Ready to Ship
Ready to ShipThere is a number of different 23 cm antennas that perform varying functions. They include:
Yagi Antennas
The 23 cm Yagi antenna is designed with several parallel elements and can offer gain and directivity. It is mainly used in mobile satellite communications, amateur radio, and deep space. A few extra elements on the Yagi design offer precise signal pickup and can be helpful in weak signal areas.
Parabolic Dish Antennas
A Parabolic dish antenna focuses signals with a parabolic reflector and gets a higher gain than many antennas. It works well in applications where the target of the signal needs to be very precise, such as satellite communications or deep-space probes. The parabolic dish antenna is a very sensitive antenna that can pick up signals from very distant satellites or space probes due to its size and shape.
PVC Pipe Antennas
The 23 cm PVC pipe antenna is a simple, cost-effective solution many amateur radio operators build. It is portable and is often used in field operations or temporary installations by people. This antenna performs basic communication functions well and is much more affordable and easier to build due to the materials used.
Vertical Polarized Antennas
This 23 cm Vertical polarized Antenna is designed for mobile and base station applications. It is mainly used in voice communications with users of an amateur radio and satellite systems. A Vertical Polarized Antenna provides omni-directional coverage and does not require precise alignment with the signal source, so it is usually found in applications where the antenna needs to be used in different directions.
Loop Antennas
This is a 23-cm Loops Antenna that consists of a single conductive loop, which is usually wire or tubing. It works well for receiving and transmitting signals in targeted frequency ranges. A loop antenna is compact, so it is very ideal for portable and mobile operations. One of its major benefits is its ability to reject noise and interference, providing clearer signals in areas with many radio frequency interferences.
Dish Array Antennas
These antennas consist of multiple dishes that provide very high gain and are used in applications requiring massive signal collection or transmission. They are mostly utilized in satellite ground stations, astronomical observations, and deep-space communications. The dish array antenna improves resolution and allows the user to track multiple targets or collect detailed information.
The features that come with a 23cm antenna include:
Frequency Range
The 23 cm band usually operates between 1240 MHz and 1320 MHz. Most antennas are designed to provide effective communication in this frequency range for satellite and terrestrial applications.
Compact Design
An ideal feature of the 23 cm antenna is its relatively short wavelength, which makes it easier to construct and carry. This makes it more versatile for indoor and outdoor use; for instance, people use it for portable satellite communications.
High Gain
Many of the antennas are designed to increase gain, which focuses the signal in a particular direction. This improves the strength of the signal over longer distances, making it ideal for satellite and weak signal communication.
Durability
Common materials employed include aluminum, steel, and PVC. Aluminum and steel antennas are lightweight but have rigid structures, while PVC antennas have more flexibility and waterproof features. Antennas made with these materials can withstand outdoor weather elements like rain, wind, and even severe temperatures.
Directional and Omni-Directional
Directional antennas focus reception and transmission in a specific direction, while omni-directional antennas uniformly receive and transmit signals in various directions. Depending on their design, the 23 cm antennas can offer both types of functionalities for various applications.
Tuning Capability
Most of these antennas are designed to be tunable. This allows one to adjust the antenna to a particular frequency within the 23 cm band. This feature enables the optimum performance of the antenna for different satellite or ground station communications.
There are various uses of a 23cm antenna, and some of them include:
Satellite Communications
A 23 cm antenna is useful in communicating with satellites, military operations, and scientific expeditions. They regularly maintain contact with orbiting satellites for data transfers, telemetry, and voice communications.
Amateur Radio
Many amateur radio operators use a 23 cm antenna to communicate with satellites (this is known as Earth-Moon-Earth or EME communications). They use 23 cm for local and long-distance communication through the ionosphere and other space conditions because they are larger than antennas for other bands.
Scientific Research
Deep space missions use 23 cm antennas to send back important scientific data and images from distant planets and other objects in space. This frequency band is very effective in the study of radio emissions from cosmic sources.
Weather Monitoring
Ground-based and space-based weather satellites use the 23 cm antenna to monitor and predict weather patterns. It will allow them to provide accurate weather forecasts with timely satellite data transmission.
Tracking and Control
Mission control teams and space agencies can track the position and speed of spacecraft using a 23 cm antenna. They perform this by allowing precise tracking and control operations for missions.
Earth Observation
Satellites focused on Earth observation, such as those monitoring environmental changes and land use, also utilize these antennas. The antennas enable the collection of high-resolution images and data for various applications, from agriculture to urban planning.
Space Exploration
Probes and rovers exploring planets and moons, such as Mars, use a 23 cm antenna, especially for sending data back to mission control. These antennas help transmit vital scientific information, images, and discoveries across massive interplanetary distances.
Emergency Communications
Emergency services use these antennas during disasters when conventional communication systems are down. They would maintain communication with satellites for coordination and information sharing.
When selecting the appropriate 23 cm antenna, one should consider the following factors:
Purpose
What the antenna will be used for will affect the type that is chosen. A simple omni-directional antenna should suffice for general satellite TV reception. A specialized directional antenna is great for long-range communication or deep space tracking.
Antenna Gain
The higher the gain, the more focused the signal. Antenna gain is helpful when trying to receive weak signals. However, higher gain can mean narrower focus, which might require more precise pointing during communication.
Material and Build Quality
Antennas come in various materials, including aluminum, steel, and PVC. Each has advantages in terms of weight, durability, and resistance to weather elements. Choose a material strong enough to withstand outdoor conditions if the antenna is to be placed outdoors.
Portability
If it needs to be moved often or if it has to be used in the field, then the weight and size of the antenna will be very important. Some portable antennas can be assembled or disassembled easily for transport.
Compatibility
The choice of the antenna will depend on the communication system, satellite, or ground station. Ensure that it is compatible with the frequency range of the satellite system to achieve optimal performance.
Tuning and Adjustments
If precise frequency matching is required for the application, consider the need for tuning. Some 23 cm antennas have built-in tuners, allowing adjustments to keep the antenna in resonance with changing frequency conditions.
Cost
Generally, price will be a primary factor. Basic antennas meant for casual or emergency use should be relatively cheaper. Specialized high-gain or well-engineered antennas may cost more due to enhanced performance. Consider all these factors in relation to the budget, and settle for an antenna that offers the most value for the intended use.
The 23-cm rubber duck antenna works for various applications, including satellite communications, amateur radio, earth observation, scientific research, tracking and control of space missions, and emergency communications. Its compact size and effectiveness make it ideal for communicating with satellites and other space objects.
Gain is simply the measure of how effectively an antenna radiates or receives energy in a specified direction. The gain is mainly expressed in decibels (dB) and is often measured against a reference antenna such as the isotropic radiator or dipole.
Yes, they are meant to pick up radio waves from the environment and convert them into electrical signals. Many antennas which transmit the signals are also used to receive them.
Most antennas are built with durable materials to withstand outside environmental elements. These materials include aluminum, steel, and PVC, and each has its advantages in terms of weight, sturdiness, and resistance to weather.
The performance of an antenna depends on gain, size, frequency range, and application. Antenna gain indicators are commonly used for receiving weak signals, size, and frequency range concerning the satellite and ground communication.
