1. Travelling Wave Slot Array Antenna Instructions
2. Travelling Wave Slot Array Antenna Reviews
3. Slot Array Antenna

1. The proposed leaky wave slot antenna array is fed through Port 1. To avoid standing wave along the CPW transmission line, a 50-Ohm load is used at Port 2. In practical implementation of the proposed antenna array, more radiating elements should be used to minimize the lost power at the end load and increase the gain.
2. Continuously scaled traveling-wave antennas such as the exponentially-tapered Vivaldi slot have been demonstrated to exhibit broad-band operation in both return loss and radiation patterns 6. In an array of such elements, bandwidth perfor-Fig. Simulated versus measured return loss of theoptimized-taper = 400.

• Antenna Theory Tutorial

Travelling Wave Slot Array Antenna Instructions

Slot array antennas can be classified into two types: standing-wave-fed and traveling-wave-fed 6. The impedance bandwidth of the standing-wave-fed slot arrays reduces quickly as the number of.

• Antenna Basic Terms

• Types of Antennas

• Antenna Arrays

• Wave Propagation

• Antenna Theory Useful Resources

• Selected Reading

We have gone through different types of short wire antennas. Now, lets us look at the long wire antennas. The long wire antennas are formed by using a number of dipoles. The length of the wire in these type of antennas is n times λ/2

$$L = n lambda/2$$

Where,

• L is the length of the antenna,

• n is the number of elements,

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• λ is the wavelength

As ‘n’ increases, the directional properties also increase.

Types of Long-wire Antennas

Long wire antennas are divided into two types namely − Resonant Antennas and Non-resonant Antennas.

Travelling Wave Slot Array Antenna Reviews

Resonant Antennas

Resonant Antennas are those for which a sharp peak in the radiated power is intercepted by the antenna at certain frequency, to form a standing wave. The radiation pattern of the radiated wave is not matched with the load impedance in this type of antenna.

The resonant antennas are periodic in nature. They are also called as bi-directional travelling wave antennas, as the radiated wave moves in two directions, which means both incident and reflected waves occur here. In these antennas, the length of the antenna and frequency are proportional to each other.

Non-resonant Antennas

Non-resonant Antennas are those for which resonant frequency does not occur. The wave moves in forward direction and hence do not form a standing wave. The radiation pattern of the radiated wave matches with the load impedance in the non-resonant antennas.

These non-resonant antennas are non-periodic in nature. They are also called as Unidirectional travelling wave antennas, as the radiated wave moves in forward direction only, which means that only incident wave is present. As the frequency increases, the length of the antenna decreases and vice versa. Hence, the frequency and length are inversely proportional to each other.

Slot Array Antenna

These long-wire antennas are the basic elements for the construction of V-shaped antennas or the Rhombic antennas.