What is cloverleaf antenna?
What is cloverleaf antenna?
A cloverleaf antenna is a circularly polarized wire antenna, with a radiation pattern similar to a dipole antenna.
How does dipole antenna work?
A dipole antenna commonly consists of two identical conductive elements such as metal wires or rods. The driving current from the transmitter is applied, or for receiving antennas the output signal to the receiver is taken, between the two halves of the antenna.
What is pagoda antenna?
The Pagoda antenna is an omnidirectional circularly polarized antenna design that I created. My main design goals were: Good omnidirectional radiation pattern. Good axial ratio. Reasonably small.
How high should my dipole be?
There is a sweet spot height at about 60% of the wavelength of the target frequency that maximizes the performance of a dipole. For good gain in two directions to the broadside of the wire, place each dipole at a height of 60% of the target frequency wavelength.
How do you increase the gain of a dipole antenna?
In order to increase the gain of an antenna, you need to concentrate its effectiveness in the required direction. Two common methods are to concentrate horizontal beamwidth by adding reflectors and directors, thus creating a Yagi beam.
Are pagoda antennas good?
In theory this design has good radiation pattern and axial ratio. And in fact we have been hearing a lot of positive feedback from the community, that the Pagoda performed just as good as some of the best Cloverleaves out there, if not better.
What is a triple feed patch antenna?
The Triple Feed Patch antenna is a directional circularly polarized antenna. Good radiation efficiency. Most FR4-based patches have terrible efficiency because FR4 is very lossy at 5.8 GHz. Good axial ratio, not just directly perpendicular to the patch but also off-center.
How long is a CB whip antenna?
For example, the common quarter-wave whip antennas used on FM radios in the USA are approximately 75 cm (2.5 feet) long, which is roughly one-quarter the length of radio waves in the FM radio band, which are 2.78 to 3.41 m (9 to 11 feet) long.
Are helical antennas good?
Helical antenna are great for preventing multi-path as they are circularly polarized, suitable for both 2.4GHz and 5.8GHz. The Helical antenna can achieve high directionality by simply increasing the number of turns of coil. The more turns on a helical antenna, the higher gain it becomes.
Is higher antenna gain better?
On an open and flat highway, a high gain antenna will be better… 3 dB, 6 dB, etc. If your desired coverage area is hilly then a ¼ wave omnidirectional antenna will be better. The other type of gain is directional and is important for base stations.
How can I increase the range of my CB radio?
There are several procedures for ensuring maximum output.
- TUNE THE RADIO. A CB radio is only as good as the coax and antenna connected to it.
- USE CB-SPECIFIC ANTENNAS.
- ESTABLISH A GROUND PLANE.
- CHECK THE VSWR.
- ELIMINATE RESISTANCE.
What should have minimum number of turns in a helix antenna?
What is the minimum number of turns a helix antenna must have? Solution: 37.
What does 5dBi gain mean?
A medium gain antenna (6.6, 5.1 dBi) has a more rounded, wider pattern than a high gain antenna. This means the signal is less likely to be obstructed by obstacles such as buildings, trees or mountains. These factors make a medium gain antenna the best choice for those in suburban areas and the country side.
How can I boost my antenna signal?
Steps to Improve TV Antenna Reception
- Remove obstacles. Remove obstacles, if possible.
- Check and replace antenna connections.
- Run a channel scan.
- Use a rotor.
- Move the antenna.
- Use a signal amplifier.
- Use a distribution amplifier for multiple TVs or use a separate antenna for each TV.
- Get an attenuator.
How high should dipole be?
Recommendation. For best results, dipoles should be at least 1/2 wavelength above ground level. For the lower bands, especially 160-40 meters, this can become impractical–place your dipole as high as your situation allows.