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Hi everyone.
I am working on a project, require to build a heat sink with non-conductive material. Are there any materials on the market, with low thermal resistance, high melting point (>1000C) like metal, but non-conductive?
Thanks.
Sorry about the mistake in the original post, the spectrum analyzer (Agilent E4440) setting is:
The RF carrier frequency is at 6 GHz band, and the spectrum analyzer span is 1 MHz, with 100 kHz/division horizontal and 10 dB/division vertical. The resolution BW is 10 KHz, and the video BW is 100...
Hi I have a question about my RF amplifier design.
When I feed it with a single tone CW signal, the output frequency spectrum has a strange response, as shown in the attachment.
Basically, the spurious noise is about -30 dBc below the carrier frequency.
The RF carrier frequency is at 6 GHz...
hfss stripline port
Hi, everyone. I have a simple question about the lump-port assignment for stripline in HFSS.
It shows me that if I draw the lump-port from one side of the ground-plane (bottom, for example) to the stripline, and assigned the integration line along the center of the port...
Phase Shifter in 5 GHz
Hi, everyone. I have a question about the Phase Shifter in 5 GHz for WiFi applications.
It seems most of the digital phase shifters in this frequency range have large insertion loss (>3 dB) and low power handling.
I am wondering whether there are some high-end phase...
Hi, everyone. I have a question about the Tx/Rx diplexer/duplexer after the antenna in the cell phone? Is it a switch or a full-diplexer comprising of filters? What is the size of these diplexers, and how is the performances of them (loss...)? Thanks.
Hi, everyone. I have a question about the Agilent/HP network analyzer output.
There are totally 4 different files for the same measurement:
*.d1 (data), *.f1 (formatted), *.r1 (raw), *.s1 (S-parameter)
But I found that the data in *.s1 are arranged as a matrix, with the magnitude as dB and...
Hi, I have a question about HFSS patch antenna array simulation.
For a normal 16 elements patch array I simulate in HFSS, the gain is about 1.5dB lower than that in a anechoic chamber measurement. What kinds of factors would possibly drop the gain? For example, is it due to feed loss, chip...
Hi, all. I have a question about HFSS.
For example, right now I have simulated a antenna element and get its radiation patterns. Are there any ways for me to calculate a antenna array based on this element by just using the simple vector summation in HFSS, if no mutual coupling is considering...
Hi, all, I have a question about ploting the E/H filed vector in HFSS. It shows to me that the number of arrow to represent the field are too little. Can I increase the number of arrows? I cannot find that everywhere in the Modify attribute in Version 11
Hi, all. I am going to measure a circular-pol antenna, and have a question about the calibration. Where can I find some calibrated circular-pol standard antennas for calibration?
I found some dual-pol antenna, but it requires extra 90 degree coupler to generate circular-polarization. So I am...
Hi, I have a question about the LNA and PA designs.
Right now which books are best for the amplifier design at RF/microwave ranges? It should not only include the basic formula, but also the pros and cons of the up-to-date techniques. It is also better to include some practical measurement...
Hi, I am wondering in the microwave frequencies, what is the difference between gold plated and nickel plated? Does gold plated have less conductive loss?
Thanks.
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