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Dear all,
I am designing a simple slot antenna (just a rectangular cut in the ground plane) at 75GHz on a thick Si substrate . The slot has a length of 740um and a width of 22um as shown in next figure
for a small ground plane (1500 x 1500 um), the radiation pattern is perfect. It resembles...
Now my port is high enough in z direction to accommodate all the field "port_h=400*substrate_h", as shown:
However, the result still changes with port height. Now I have port_h=prefactorh*substrate_h, where prefactorh=400 to 1000 with step 50.
So although the port now captures all the field...
Strange problem in HFSS port sizing, and result comparison to ADS and Sonnet
Hi,
I am facing a problem with HFSS port sizing. I am simulating a simple microstrip line of width microstrip_w=50um on top of a substrate of thickness 0.3um, with perfect_E boundary assigned to the bottom face of the...
Frequency-dependent impedance boundary in HFSS and ADS
Dear all,
I want to know how to assign a frequency-dependent "impedance boundary" to a surface in HFSS. I know I can use the variable "Freq" "e.g. Freq^2" while assigning the boundary to the surface, but what I have is tabulated values of...
Dear all,
We want to design an microstrip antenna array at 150GHz. The losses in the distribution network should be very low, so we will use superconductors to fabricate the summing network.
However for this high frequency, superconductors exhibit frequency dependent surface impedance and this...
Hi all,
I am currently implementing the PHY layer of a communication system. The transmitter has a pulse shaping filter followed by a DAC, as depicted below:
My question is:
How up-sampling is being implemented in hardware on input data bits, i.e. is it implemented by zero padding or by...
Thanks Rbb very much
But could you provide more details about the state machine implementation )resourses to read, complexity, speed,...)
Thanks very much
Hi all,
I have a question regarding the digital implementation of a Gaussian filter for GFSK modulation used in bluetooth
I know that the filter can be implemented directly as an FIR filter, but when I searched the internet I found that there are other methods used to implement the filter...
a fatal cs error for mgc_s feature detected
simply because it is not a calibre license
a calibre license should be like that:
INCREMENT calibredrc mgcld xxxxxxxxxxxxxxxx
INCREMENT calibrelvs mgcld xxxxxxxxxxxxxxxx
INCREMENT calinteractive mgcld xxxxxxxxxxxxxx
notice the feature "calibre...
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