Antennas and Propagation

antennas, including analysis, design, development, measurement, and testing; radiation, radio propagation, and the interaction of electromagnetic... | Contact experts in Antennas and Propagation to get answers

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Questions related to Antennas and Propagation

What will be the effect in massive MIMO channel modeling if we consider the large scale fading to be different for m antennas at the BS?

In Massive MIMO propagation(channel) modeling the large scale fading considered independent of the M antennas and for all m antennas is the same . my question is what if we consider the large...

03 March 2016 3,822 3 View

How to increase return loss in mircrostrip patch?

patch design for 2.4 with coxial feed

03 March 2016 8,866 9 View

How to find mutual coupling parameters in three element parasitic patch antenna array.

The driven element is placed at the center with two parasitic patches on each side of the driven element.

28 February 2016 7,172 6 View

How to calculate ECC for MIMO antenna?

Iam using s-parameters values to calculate the ECC values. I extracted S11, S21, S12 and S22 from the simulator and used in Matlab to find ECC. ECC values calculated from simulator and Matlab...

24 February 2016 460 9 View

How can I minimize reactance of an Archimedian Spiral Antenna?

Hello,  I am designing a spiral antenna with an Edge feed. This antenna has 5 turns. I got comparatively stable impedance between 2 - 6 GHz. But see little reactance. I am not able to make that...

19 February 2016 6,300 3 View

Bowtie antennas are often used as receivers when high field confinement is needed .. is there a physical explanation about how it confines field ?

I know that the field is confined at the tip of the antenna .. but i need more explanation about this phenomena .. thanks 

17 February 2016 9,220 1 View

What's the difference between the polarization direction, maximum radiation direction and direction of the electric field distribution?

Are the direction of polarization, maximum radiation and electric field distribution the same? Especially for the patch antenna and monopole antenna. Why the patch antenna has electric fields with...

11 February 2016 8,068 2 View

How to find mutual coupling parameters in three element parasitic patch antenna array.

The driven element is placed at the center with two parasitic patches on each side of the driven element.

02 February 2016 3,228 7 View

Hi, my self prasanth ,

Hi, my self prasanth , am designing elliptical patch antenna using Ansoft HFSS using microstrip feed of driven modal solution type. So I have a doubt about the distance of radiation radiation...

02 February 2016 8,246 4 View

What is the fundamental limit on thickness of microwave absorbers?

Like there is chu and harrington limit on the size of electrically small antennas, I would like to know whether any such limit exists in absorbers? If not, then how would we define some absorber...

23 January 2016 1,568 4 View

What is the fundamental limit on thickness of microwave absorbers?

Like there is chu and harrington limit on the size of electrically small antennas, I would like to know whether any such limit exists in absorbers? If not, then how would we define some absorber...

01 January 2016 2,221 5 View

Is there any formula to calculate the dimensions of metamaterial unit cell to operate at a specific frequency?

Is there any formula to calculate the dimensions of metamaterial unit cell to operate at a specific frequency?

01 January 2016 7,940 7 View

Why I cannot export ASCII data with CST MWS 2015 not work?

I ran a time-domain simulation and recorded the electric field in a certain plane at some specific moment. This way I obtain a neat 2D contourplot inside the CST programme. The data used to...

01 January 2016 3,391 3 View

How can i measure near field and fidelity in CST ?

Hello, everyone I design an UWB antenna for radar imaging and i need to show near field characteristic and fidelity for it, thanks in advanced.

01 January 2016 6,000 5 View

How can I know the type of polarisarion of an antenna in HFSS?

Hi, How to know the type of polarization of an antenna in HFSS? Thank you.

25 December 2015 9,941 13 View

Is there a study for different noise environments and the effect of increasing No. of antennas in MIMO sys in course of mitigation of these noises?

Is there a study for different noise environments and the effect of increasing No. of antennas in MIMO sys in course of mitigation of these noises?

16 December 2015 6,483 4 View

Is there a study for different noise environments and the effect of increasing No. of antennas in MIMO sys in course of mitigation of these noises?

Is there a study for different noise environments and the effect of increasing No. of antennas in MIMO sys in course of mitigation of these noises?

12 December 2015 5,580 4 View

How can I know the type of polarisarion of an antenna in HFSS?

Hi, How to know the type of polarization of an antenna in HFSS? Thank you.

12 December 2015 8,157 12 View

How do i convert a sinusoidal signal having amplitude of 10 microvolt or less which I would be receiving from an antenna to 10 millivolt?

Hi, Can I get some suggestion about how to convert a sinusoidal signal having amplitude of 10 microvolt or less which I would be receiving from an antenna to 10 millivolt? Thank you.

11 November 2015 6,879 16 View

How to calc. the polarization of the downward char. waves in ionospheric propagation depending on azimuth, elevation angle and Earth’ magn.field?

How can I calculate the precise (elliptical) polarization of the downward characteristic (ordinary and extraordinary) waves in ionospheric (magneto-ionic) radio wave propagation? Input parameters...

09 September 2015 5,296 2 View

How can I increase the bandwidth at lower frequencies?

I am using FR4 substrate with 1.6 mm thickness and 4.6 dielectric constant for a dual band dipole antenna. If there are some techniques to increase the bandwidth at lower frequencies without...

03 March 2015 6,531 8 View

Any antenna and propagation researchers that will be at EuCAP 2015 in Lisbon?

Are there any researchers on antennas and propagation here that will also visit EuCAP 2015 in Lisbon?

03 March 2015 1,763 0 View

Is a Markovian approach (state oriented approach) to QuaDriGa channel model possible?

Land Mobile Satellite Channel Modeling

16 February 2015 474 3 View

Is a Markovian approach (state oriented approach) to QuaDriGa channel model possible?

Land Mobile Satellite Channel Modeling

02 February 2015 3,086 4 View

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