Is it better to transmit signal with both rhcp and lhcp antenna and receive it in this way?

HI there, i want to transmit video signal, my transmitter has two port antenna i want to use one RHCP and one LHCP for the antenna and for the receiver i do the same but, my concern is for...

01 February 2018 7,522 5 View

Gold code sequence CDMA signal synchronization?

hi there, how can we synchronize the gold code sequence or at all PN codes in sender and receiver?? i think that the gold code sequence is change by time. am i wrong? please every one that...

07 August 2017 5,898 0 View

DSSS simple FPGA code?

04 May 2017 1,171 1 View

Can we use a linearly polarized antenna for receiver and circularly polarized antenna for transmitter or vies a versa?

I want to know does it works well or not?

04 May 2017 6,643 3 View

What is the typical noise floor formula to have a nice receiver?

i want to know that the best receiver should detect how much power in dbm.

04 May 2017 8,356 6 View

Using to monopole vertical and horizontal placing antenna does the work of a circular antenna?

i want to know when we use two vertical and horizontal polarization mounting mono pole antenna, does it compensate placing a circular antenna beside?

03 April 2017 317 3 View

I have designed reflectarray element and feeding it though Horn Antenna on HFSS. After full wave simulation, I am not getting desired results?

I have designed reflectarray element to generate OAM beams at 5.8GHz and feeding it though Horn Antenna on HFSS. After full wave simulation, i am not getting desired results i.e Radiation pattern...

01 March 2021 9,701 5 View

Does the circuit modeling for planar monopole antennas using Foster canonical forms give good approximation?

Hi researchers, I am searching for some accurate way to do the circuit modeling of planar CPW-fed monopole antennas. I have gone through the literature where mostly circuit modeling is done using...

28 February 2021 7,016 1 View

Microstrip antenna design tutorial of HFSS 3D layout module ?

I have designed a 24 GHz rectangular antenna on HFSS 3D model and got desired results while desing the same antenna with same dimensions I am getting resonance frequency at 27 GHz I am...

28 February 2021 4,426 2 View

What is Flat Lens Antenna?

28 February 2021 5,433 3 View

Compact antenna for the frequency range 1 MHz-5 MHz?

Hello everybody! I have a problem with developing a compact antenna for the 1MHz-5MHz frequency range. Tell me what type of antenna can be used and what books and articles to read to perform this...

27 February 2021 7,710 4 View

Can impedance of antenna be less than 50 ohms?

I am simulating helix antenna in hfss, right now, giving excitation with 50 ohms port. When I see the results of Z parameter (real). It shows lower than 50 ohms. Do not understand, if it can be...

27 February 2021 4,218 7 View

Efficiency of Proximity Feed Patch Antenna ?

Greetings to all of You! I have searched some research papers for the designing of a proximity coupled patch antenna. Researchers are talking about the impedance bandwidth of the antenna but...

24 February 2021 7,662 3 View

2D or 3D phased array antennas??

Dear All, I will start my PhD maybe this year regarding phased array antennas. I'm interested in to find more detailed information about 3D phased array antennas and 2D phased array antennas. Then...

21 February 2021 368 3 View

Helix antenna coupling problem?

Dealing with a helix antenna, made with flexible material and not rigid like using a PCB board or wire. At the beginning of the helix is too close to the ground plane, causing coupling. How can I...

21 February 2021 4,453 3 View

Is there a way to use waveguide ports for circular antenna design in CST?

Hi, whenever i use circular array i get this error "Waveguide ports must be aligned with Cartesian coordinate planes for the transient solver" Does anyone use circular array with waveguide ports?...

09 February 2021 3,609 8 View