Can any one introduce me a paper with wideband planar slot antenna with back complete ground plane?

More Azita Goudarzi's questions See All

I want to draw such spiral antenna in HFSS. Would you please suggest me the best formula for this kind of spiral?

I want to draw this spiral antenna in HFSS. Is there any one to help me to extract the exact formula?

07 August 2019 2,009 5 View

Which parameters are important to be calculated by network analyser for RFfID antenna?

My question is that in a Vector Network Analyzer when I make a loop antenna like a rectangle to sense a RFID tag, which parameters are important and should be calculated.

08 September 2017 6,038 4 View

Would any one help me to simulate the RH and LH pattern in cst software?

I want to simulate RH and LH pattern individually by cst like the attached picture.

07 August 2017 9,173 4 View

Why by increasing the total size of this antenna, the radiation pattern results are changed?

when i change the total size of this slot bow tie antenna-without changing the slot size-the radiation pattern is changed and i dont have any broadside pattern in my results.

01 February 2017 7,805 7 View

How can i see the total gain of an antenna according freq, when i use interpolation sweep in HFSS simulator?

when i use interpolation sweep, the option of sweep is hidden from this box. why?

01 February 2017 5,385 9 View

How can i see the max gain vs freq at cst software in dBi scale?

i plot the max gain vs freq in CST software, but according to the attached image, the dBi scale is inactive. how can i see the gain by dBi range.

31 December 2016 1,169 4 View

How can i feed this bow tie antenna?

31 December 2016 1,464 17 View

How can i unwrap the s_parameter phase in cst software?

...

01 January 1970 3,428 9 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

Chaouki Hannachi

Hello Azita,

the attached documents will help you on your investigation about planar slot antenna

B.Regards

Azita Goudarzi

@chaouki

thank you dear. but i need a planar antenna with these properties

1: doesn,t have a stack structure

2:has widrband properties( about 7-12)

3:has complete groun plane under its structures.

because of these conditions, i think a slot antenna or bow tie antenna can be good. but many of them are stack or dont have a complete ground plane . i read the book of compact and broadband ms antenna before. but most of them dont have a good wideband properties or use pin, short wall or stack structured, that aren,t appropriate for me.

thank you

thank you dear. is it broadside or endfire antenna?? do you think i can change or scale it to reach an uwb from 7 to 12ghz??

i check some yagi yuda antennas and i think they aren't complete ground plane.

thanl you

It is scalable in frequency. This kind of printed yagi antenna has a complete ground plane, and it has endfire radiation pattern.

Regards

David Gibbins

Please find a paper about a cavity backed wide-slot antenna attached to this message. This antenna will simply scale to your frequency band though you might have to change the substrate thickness. You'll notice that the cavity extends along way from the back of the slot so I'm not sure if this will fulfil your requirements. It is hard to achieve a low-profile wide band antenna of this form due to the resonant nature of the backing cavity. While it is easy to produce such an antenna for a single frequency. it is a lot harder.

The antenna in the paper works on the principle of an absorbing cavity. where the back radiation is attenuated. It might be possible, with the right absorber, to significantly reduce the size of the cavity to something that suits you.

Article A Comparison of a Wide-Slot and a Stacked Patch Antenna for ...

@David

thank you dear Gibbins.

your paper has very good results.Congratulations to you. thank you to your suggestion. i consider this paper too.

best regard

Alexey Bronwald

You say nothing about antenna's dimensions in the directions transversal to the direction of radiation. Another important parameter is the desired radiation pattern.

The answer may depend on the features mentioned.