Nt1210 Lab Report Paper

The bandwidth limitation of antennas is usually linked to their input impedance because it is the quantity which changes with frequency so improvement in impedance response can help us to enhance its bandwidth. This approach can be implemented into following broad categories:

The upper sideband is fc +FM where fc is the carrier frequency and FM is the modulation (audio) frequency .The lower sideband is fc – FM. The total bandwidth is 2*FM

Lastly in section (C), path loss exponents are same as that of section (B) but the distance from transmitter and receiver are varied for individual value of path loss exponent. From the graph, it shows us that for n=2, the distance of reduced output power is in the range from 0.1 to 1.5km, similarly for n=3 it is in the range of 1.5 to 2.5 km, and for n=4 it is from 2.5 to

The band pass FIR digital filter has been analysed with hanning window by using FDA tool in the MATLAB. The cut off frequency has been estimated by using nn tool.

In the recent years, progress in computational and experimental millimeter-wave electronics has identify the millimeter-wave (MmW) frequency band as highly promising for a number of high-resolution and high-speed wireless systems [1]–[6]. In specific, the unlicensed 57–64 GHz band is of strong interest for high data rate Gbps

Table 5.5 Comparison of mean square error using FFBP and RBF neural network algorithms used for cut off frequency calculation of band pass FIR digital filter with kaiser window

The rectangular microstrip patch antenna on the unity permittivity substrate within the internal U-shaped slot. Recently, the researchers had proposed the similar design on the microwave substrate, that was better preserve the thin profile characteristics. These researches had focused the almost entirely on the top plate of the antenna element, while the effect of the size of the ground plane on which they are mounted had not been the fully studied. According to the published literature reducing the size of the ground plane and the making of the ground plane resonate at the desired frequency, both the bandwidth enhancement and the size reduction could be

When the filling material is homogenous ieε1=ε2=2ε0 the patch has its resonance at f=w/2π=2.12GHz.However loading patch with an ENG material can reduce the resonance frequency in principle without limits.When permittivity ε2=-2ε0,the rasonsnce frequency may be made arbitrarily low.The value of plasma frequency

The characteristics are expressed either by time domain impulse response h(t,ϴtx,Ѱtx) or by the frequency domain transfer function H(f,ϴtx,Ѱtx) . thye dispersion of an antenna can be analysed by regarding the analytic impulse response, which is calculated by Hilbert transform.

The planar antenna configurations such as microstrip and patch antennas have been found suitable for such systems. These antenna configurations are of low profile, lightweight, simple and inexpensive to fabricate. The main design goal of antenna design for modern communication systems is to achieve the better performance for desired frequency bands. But the main disadvantage of using microstrip antenna for recent day’s wireless communication is to achieve multi frequency operation with single antenna, maintaining the performance the antenna for all desired frequency.

There are several substrate materials that can be used for fabrication antenna. Some of them are low cost while the others are highly expensive. Each substrate being used has its own advantages and disadvantages. The dielectric of each substrate plays an important role in the

In this paper, they have developed a dual frequency printed dipole rectenna for the wireless power transmission at 2.45 & 5.8 GHz. For operating at dual band, a novel uniplanar printed dipole antenna is created using a coupling method. In this combination of low pass filter and bandstop filters effectively blocked the higher order harmonic re-radiations [11].

In this work, we consider an eNB with Ne antennas and K UEs with Nr antennas operating in FD mode (fig.1). For the proposed architecture shown in Fig.2 and Fig.3 for eNB and UE respectively, the Analog and Digital SIC unit, includes analog and digital cancellation stages described in [10,11] for implementing SIC.

varies as d−γ, where d is the transmission distance and γ is the path loss exponent [36–38]. In other words,

Basic principle of this type of configuration is isolation of harmonics in between nonlinear load and source. The basic configuration is similar with shunt APF, except that interfacing inductor is replaced by an interfacing transformer, where the injection of harmonic voltage occurs. It is otherwise known as a harmonic isolator, which offers zero impedance to the fundamental and infinite impedance to the harmonic frequency components. Fig. 3.5 demonstrates the basic configuration of a series APF. Series APF is suitable for improving the quality of the distribution source