How to give port for printed log periodic dipole array antenna in CST?

PLPDA have radiating element on both sides of the substrate. so how to apply port. i have attached the figure below.

03 January 2021 4,005 6 View

How to visualize cells seeded on Millicell-HA transwell?

Hi, I am working with Millicell-HA transwell to culture HCE-2 cells. But as the transwell in opaque, not able to visualize the cells. Can someone help me? Thanks in advance.

14 November 2019 3,573 1 View

Can somebody help me with method(s) to analyse and quantify oligonuleotides and protein interactions?

I am looking for an assay design that can help me analyse DNA (oligonucleotides) - protein interactions and provide some means to quantify these interactions. Any help or direction will be much...

14 July 2019 8,475 5 View

What is the calcium concentrations in KSFM and ideal calcium levels for cervical keratinocyte culture?

Hi! I an interested in culturing cervical kerationocytes and calcium levels in media are know to affect their cell growth. I recently obtained two KSFM for the same (one with Calcium and another...

14 May 2019 1,758 3 View

Can we add calcium oxide to graphene oxide?

Suggest any method for the metallisation of graphene oxide

28 January 2019 5,069 3 View

Mixed co culture experiment and MTT assays protocol?

Hello, I am trying to understand a co-culture experiment using different ratios of a cancer cell line and hematopoietic stem cell fraction in a mixed co culture. The ratios range from 1 to 1000...

11 October 2018 697 7 View

How to determine the accurate functional titer of a FLAG tag lentiviral particle?

I have a plasmid of >10 kb that I have made into particles in HEK293T. Before inserting the virus in mice, I would like to determine the functional titer. I have a p24 ELISA kit, but I was...

22 May 2018 3,900 3 View

I am working on ISSR primers. I get bands for some samples and a smear in others. Why?

Hi, I am currently working on ISSR primers for my algal samples. When I did PCR for my samples along with some marine algal specimens, I could observe bands for the marine specimens and a smear...

15 May 2018 877 3 View

Which is a very successful procedure for extraction of genomic DNA from herbarium sample?

Greeting to all researchers! Can anyone suggest me with a successful procedure for extraction of genomic DNA from herbarium material of Red algae (Rhodophyceae). So far we are successful in...

07 March 2017 7,720 5 View

Is there any expected range of GC content variation for identificattion of sub species?

I have done rbcL sequencing of two populations of the same species of algae. On calculating the GC content of the sequenced product I got a 1% difference between the two populations. Does this...

21 February 2017 4,825 2 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