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 impact on Antenna performance to shift the resonant frequency by RLC Matching network?

There is always a possibility to shift the resonance frequency by adding a RLC matching network. I wonder what will be the consequence on antenna performance (axial ratio, gain)? If there is no...

14 September 2020 5,326 3 View

How can I generate TWDP random data?

Hi, I'm currently trying to understand the "Two wave with diffuse power" (TWDP) probability density distribution and test a method of moments estimator. However, I have a problem generating data...

21 August 2020 842 3 View

How to find transmitted and received signals of two antennas system in HFSS?

I have designed two same antennas, one is transmitting antenna and other is receiving antenna, both are in far field of each others and antennas are in face to face orientation.

12 June 2020 8,505 7 View

Phased Array design specifications?

I need to design a phased array with freq. 2000 MHz to 2300 MHz specification. Thinking of linear array. Directivity should be high like 20 dBi and circular polarization. Can you please advise me...

02 February 2020 4,333 4 View

How to add path loss and fading into 5g MIMO NLOS channel model?

Colleagues, good day. I have a task: -add path loss and fading to channel model between station antennas and telephone antennas, in the context of 5g network, MIMO technology and the NLOS...

10 October 2019 2,716 10 View

What is the wave width??

We all know that the wave length (lambda=c/f). However, does any one visualised the width of waves??

10 October 2019 3,949 5 View

How to design 16 way power divider for wideband application at 30GHz?

I am looking simple method to design 1*16 microstrip power divider for wideband (impedance bandwidth 5GHz) at 30GHz. Please suggest me easy method to design power divider for wideband...

09 September 2019 6,949 4 View

How to determine the optimal tilt of an antenna?

I am doing some 5G radio coverage simulations and I was wondering what the optimal tilt of the BS antenna is, i.e., the optimal elevation/vertical angle of the main lobe.

08 August 2019 8,231 7 View

What's the cuboid at the input port of SIW?

Hello, I am reading a paper about a SIW-fed antenna. At the input port, there are two cuboids, as shown in the attached file. Can anyone tell me what these two cuboids are? Are they PEC? The...

06 June 2019 3,123 5 View

HFSS radiation pattern issue: Not getting proper omnidirectional shape. Why?

Hello, I am trying to design a broadband antenna. I am getting proper S11 response (-10dB) for about 4.5 GHz to 10.5 GHz. But the problem is I am not getting desired omnidirectional shape in...

15 May 2019 10,000 3 View

HFSS radiation pattern issue: Not getting proper omnidirectional shape. Why?

Hello, I am trying to design a broadband antenna. I am getting proper S11 response (-10dB) for about 4.5 GHz to 10.5 GHz. But the problem is I am not getting desired omnidirectional shape in...

05 May 2019 3,493 4 View

How is RREQ broadcasted and RREP unicasted in AODV if the antenna is omnidirectional.?

In AODV protocol the RREQ is broadcasted because the underlying antenna is omnidirectional hence the signal is received to all the neighbors. And how the RREP is unicasted when the antenna...

08 August 2018 6,348 0 View

What are the most recent advances & technical challenges in designing, synthesis and implementation of a chained-function for 5G Nets implementation?

Millimeter-wave communication system is expected to overcome the global bandwidth shortage because it has a larger bandwidth allocation, which can be translated to provide data transfer rates...

08 August 2018 2,122 3 View

What is the PRACTICAL value of axial ratio for ELLIPTICAL POLARIZATION?

The practical magnitude of axial ratio for circular polarization can go upto 6 dB (0 dB

30 July 2018 5,059 10 View

What is the PRACTICAL value of axial ratio for ELLIPTICAL POLARIZATION?

The practical magnitude of axial ratio for circular polarization can go upto 6 dB (0 dB

07 July 2018 2,535 11 View

How could I extract effective permittivity of a SIW slot antenna based on S parameters (extracted from CST or HFSS) in Matlab?

Hi everyone, I've just designed a wide band SIW slot antenna in CST using metamaterials and now I want to find out the effective permittivity of the structure. I've got the S parameters from CST...

06 June 2018 4,086 8 View

Wireless Network scattering parameters：Lambertian Model and Directive Model?

Direct questions： if there is anyone which could recommend me some papers that contains material real permittivity and loss tangent in 5GHz wifi indoor scenario？ if there is anyone which could...

05 May 2018 722 0 View

Some refrence to undrestanding Metasurface,EBG and FSS ?

Hello,please suggest me some Valuable reference...

03 March 2018 4,132 2 View

What is the impact factor of Scientific Research publisher Open Journal of Antennas and Propagation (OJAPr)?

Impact Factor of Scientific Research publisher Open Journal of Antennas and Propagation (OJAPr)

27 February 2018 970 3 View

Time Phase between E and H?

Time Phase difference betwee static E and H fields is 90 degree while the far fields of antenna propagating in free space are in phase, why?

11 November 2017 9,629 8 View

Time Phase between E and H?

Time Phase difference betwee static E and H fields is 90 degree while the far fields of antenna propagating in free space are in phase, why?

02 November 2017 6,932 8 View

There is someone here can give me an answer to my question ?

Hiii everyone, Please, can someone explains to me what does Group delay mine in antennas propagation ? How we can calculate it, specially in antennas ? When I take the mesurment of this...

10 October 2017 5,065 0 View

Please, can someone explains to me what does Group delay mine in antennas propagation ?

Please, can someone explains to me what does Group delay mine in antennas propagation ? Between what and what we mesured it, specially in antennas ? When I take the mesurment of this parameter,...

10 October 2017 8,591 4 View

How sure we are that the photon is a particle? How big is a photon of radio frequency?

Consider a radio wave of wavelength λ=100m. If the electromagnetic waves are streams of photons, then a radio wave has to be a stream of photon. How big can be a photon of this wavelength? For a...

09 September 2017 5,234 4 View

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