- What is substrate in antenna?
- What is feed line in antenna?
- What is feed point in antenna?
- What is a good antenna gain?
- How does a patch antenna radiate?
- Which of the following feed technique offer larger bandwidth in micro strip patch antenna?
- How do I increase the gain on my patch antenna?
- What is bandwidth in antenna?
- Why we use fr4 substrate?
- What is the difference between frequency and bandwidth?
- What is 3 dB bandwidth?
- Does higher frequency mean more bandwidth?
- How can I increase the bandwidth of my microstrip antenna?
What is substrate in antenna?
The substrate in microstrip antennas is principally needed for the mechanical support of the antenna.
To provide this support, the substrate should consist of a dielectric material, which may affect the electrical performance of the antenna, circuits and transmission line..
What is feed line in antenna?
In a radio antenna, the feed line (feedline), or feeder, is the cable or other transmission line that connects the antenna with the radio transmitter or receiver. In a transmitting antenna, it feeds the radio frequency (RF) current from the transmitter to the antenna, where it is radiated as radio waves.
What is feed point in antenna?
The antenna feed is the wire or cabling (transmission line) that connects between the antenna and the radio, specifically called the feed line. The antenna feed is the location on the antenna where the feedline from the receiver or transmitter connects or attaches.
What is a good antenna gain?
The gain of a real antenna can be as high as 40-50 dB for very large dish antennas (although this is rare). Directivity can be as low as 1.76 dB for a real antenna (example: short dipole antenna), but can never theoretically be less than 0 dB.
How does a patch antenna radiate?
Antenna Gain The input power is transformed into radiated power and surface wave power while a small portion is dissipated due to conductor and dielectric losses of the materials used. Surface waves are guided waves captured within the substrate and partially radiated and reflected back at the substrate edges.
Which of the following feed technique offer larger bandwidth in micro strip patch antenna?
L-shaped feeding. In [29, 30], an L-shaped probe is used to feed a microstrip patch and demonstrated that by this way, the impedance bandwidth can be increased. This method can be interpolated as a combination of proximity coupled feeding and stacking technique.
How do I increase the gain on my patch antenna?
Antenna gain is related to the antenna type, FR4 is lossy material therefore you can not expect large gain from FR4. A single patch antenna on FR4 can produce gain of 3-5dBi. Air as a substrate can give you maximum gain for a specific design since it has no dielectric loss.
What is bandwidth in antenna?
– Bandwidth The bandwidth of an antenna refers to the range of frequencies over which the antenna can operate correctly. The antenna’s bandwidth is the number of Hz for which the antenna will exhibit an SWR less than 2:1. The bandwidth can also be described in terms of percentage of the center frequency of the band.
Why we use fr4 substrate?
The material is known to retain its high mechanical values and electrical insulating qualities in both dry and humid conditions. These attributes, along with good fabrication characteristics, lend utility to this grade for a wide variety of electrical and mechanical applications.
What is the difference between frequency and bandwidth?
Both frequency and bandwidth are the two major terms related to data transmission. The major difference between frequency and bandwidth is that frequency shows the number of complete cycles appearing in unit time. As against bandwidth is the overall amount of data transmitted in a unit time.
What is 3 dB bandwidth?
The frequency at which the power level of the signal decreases by 3 dB from its maximum value is called the 3 dB bandwidth. … The 3 dB bandwidth is the frequency at which the signal amplitude reduces by 3 dB i.e. becomes half its value. The bandwidth of a bandpass filter is usually defined as the 3 dB bandwidth.
Does higher frequency mean more bandwidth?
Higher Frequencies Have More Bandwidth Higher-frequency transmissions have more bandwidth than lower-frequency transmissions, which means higher-frequency transmissions can send substantially more data between devices in less time. … A 5 GHz Wi-Fi device is able to carry more data than 2.4 GHz Wi-Fi device.
How can I increase the bandwidth of my microstrip antenna?
Several methods are defined in the literature to increase bandwidth of microstrip patch antennas: increasing the substrate height, lowering the dielectric constant , introducing a curved slot in the patch of the antenna and optimizing the gap between the patch and the partial ground plane .