What is feed line in microstrip antenna?

Context in source publication 1) Microstrip Line Feed: In this type, a conducting strip is connected directly to the edge of the Microstrip patch as shown in Fig. 2. The patch is wider than the conducting strip. Thus the feed can be etched on the same substrate to provide a planar structure.

What is feed point in antenna?

The antenna feed system or antenna feed is the cable or conductor, and other associated equipment, which connects the transmitter or receiver with the antenna and makes the two devices compatible. On an antenna the feed point is the point on the driven antenna element at which the feedline is connected.

How do you calculate the gain of a microstrip patch antenna?

The gain of an antenna is defined as the ratio between the maximum radiation intensity in a given direction to the maximum radiation intensity from a reference antenna in the same direction, the achieved gain of the micro strip patch antenna is 7.7082 dB for 3.8GHz , where the figure 9 shows the gain of the antenna.

Is a patch antenna directional?

A patch antenna (also microstrip) is a directional low profile, low-cost antenna that can be fabricated onto a flat surface, including a Printed Circuit Board (PCB).

How do you feed a microstrip antenna?

Microstrip antennas can also be fed from underneath via a probe as shown in Figure 3. The outer conductor of the coaxial cable is connected to the ground plane, and the center conductor is extended up to the patch antenna. Figure 3. Coaxial cable feed of patch antenna.

What is Probe feed antenna?

The proposed probe-fed patch antenna can have a thick air-layer substrate for broadband operation, and by using a triangular conducting patch of a suitable flare angle placed at one of the patch’s radiating edges, good impedance matching over a wide frequency range can be obtained by using a conventional probe feed …

What is feed in satellite?

A live broadcast via satellite forming part of another programme.

What is coaxial feed in antenna?

The Coaxial feed or probe feed is one of the most common techniques used for feeding microstrip patch antennas. As seen from figure 1.2, the inner conductor of the coaxial connector extends through the dielectric and is soldered to the radiating patch, while the outer conductor is connected to the ground plane.

How do you calculate antenna gain with HFSS?

In HFSS go to HFSS tab> Results> Create Far Filed report> Rectangular Plot>select trace tab> Prime Sweep: select Freq> select Gain > select dB> go to familes tab > select Theta=0 and Phi=0 >then click New Report. Fallow this step and we have seen Gain Vs Frequency plot in HFSS.

Which is most simplest mode of analysis of microstrip patch antenna?

The transmission line method is the easiest way to study the microstrip antenna. In this method the transmission line model represents the microstrip patch antenna by two slots, separated by a low-impedance transmission line of length L.

How does a microstrip patch antenna work?

Construction and working The microstrip consists of a very thin metallic strip placed on a ground plane with a dielectric material in-between. When the antenna is excited, the waves generated within the di-electric undergo reflections and the energy is radiated from the edges of the metal patch which is very low.

What are the main parts of a microstrip patch antenna?

The Microstrip Patch Antenna is a single-layer design which consists generally of four parts (patch, ground plane, substrate, and the feeding part). Patch antenna can be classified as single – element resonant antenna. Once the frequency is given, everything (such as radiation pattern input impedance, etc.) is fixed.

Where is the feed point of a patch antenna located?

The feed point of any patch antenna must be located at a point that achieves the input impedance of 50 ohm at the resonance frequency [ 10] . Therefore, the feeding points was applied for all the specific points antenna area of 169 along the X and Y coordinates including the origin point.

Why does a patch antenna radiate but not a microstrip antenna?

The current adds up in phase on the patch antenna as well; however, an equal current but with opposite direction is on the ground plane, which cancels the radiation. This also explains why the microstrip antenna radiates but the microstrip transmission line does not.

What is the fringing E-field direction of a microstrip antenna?

Note that the fringing fields near the surface of the patch antenna are both in the +y direction. Hence, the fringing E-fields on the edge of the microstrip antenna add up in phase and produce the radiation of the microstrip antenna.

What is the input impedance of a microstrip antenna?

The width W of the microstrip antenna controls the input impedance. Larger widths also can increase the bandwidth. For a square patch antenna fed in the manner above, the input impedance will be on the order of 300 Ohms.