Anilkumar Tirunagari

6 Questions 1 Answers 0 Followers

Questions related from Anilkumar Tirunagari

How to check the suitability of a substrate to particular range of frequencies?

Is there any constraint/mathematical support for choosing a substrate for desired frequency bands. Can we specify the lower and upper cutoff frequencies of a substrate by knowing their dielectric...

05 May 2018 1,554 0 View

What are surface wave modes? How can we calculate them for a particular substrate to design microstrip patch antennas?

What are surface wave modes? How can we calculate them for a particular substrate to design the microstrip antennas? Kindly provide the mathematical expressions.

05 May 2018 7,520 1 View

How the reflection coefficient parameter is mathematically related to arbitrary antenna geometry?

How can we establish mathematical relationship between S11 and arbitrary geometry?

01 January 2018 218 2 View

Which type of port (excitation in HFSS) is suitable for simulating the antennas that possess thin substrates?

Giving lumped port and simulating the antenna having very less substrate thickness such as 0.1mm or lesser is difficult to simulate. In this regard I would like to know the best port method in HFSS.

01 January 2018 5,705 6 View

What can be the extension size of the radiation box for a (a) resonant/narrow band antenna (b) for a wide band antenna (c) for a multi band antenna?

"Usually, the Radiation Boundary Condition (ABC):• Absorption achieved via 2nd order radiation boundary• Place at least λ/4 from strongly radiating structure• Place at least λ/10 from weakly...

02 February 2017 9,820 0 View

Why the Peak Gain Vs Freq. plot of the UWB antenna is showing the lower values at the lower UWB and gradually seems to be increases at higher UWB?

While simulating the UWB antenna, usually it is found that the peak gain is found less (which nearly swings between 1-3 dB), and the gain seems to be increasing as frequency increases. Is there...

02 February 2017 3,850 5 View