Dears,
My current solution is Generate it at DDS and then modulate on L-band, then up-convert to X-band. This solution need a lot of components include a dds, two PLL, two Mixer and lots of amplifiers and filters and attenuators.
Because the 2FSK modulation is two simple, I'm wonder if there is...
Hi, do anyone has the experience of DSRC on board unit design? I'm looking for the state of art product.
I only see Savari's website. Do there any system exactly base on the latest IEEE 802.11p amendment 6?
Dear friends
Now I'm doing a project to add the third RF path to Iphone5, for it can't accomplish the task of SVDO (simultaneous voice and EVDO). This is a big problem for subscribers using Verizon and Sprint's network.
You may know the orientation of antennas on Iphone, to describe it clearly...
Do anyone noticed the new technology of gap waveguide? I don't expect metamaterial go that far. It seems this type of waveguide is suitable for integration of MMICs and antenna above 30Ghz.
But I don't see any large antenna array realized in this technology. It mostly appeared in Gothenburg's...
Dears
In microwave and millimeter communication, diplexer is used for division of TX and RX. But one of our supplier provide a solution by two high isolated side by side subarrays. By the 75dB~90dB isolation(with same polarization), the diplexer can be obviated. I guess this merits is obtain by...
Dear,
Is there anyone familiar with Artificial magnetic conductor(AMC)? I'm design ultra-low profile antenna in UHP, I need this material to use as ground plane. In this paper the AMC is manufacture by a dielectric substrate MCT-25 with relative dielectric permittivity 25 in 2.54mm thickness.
Do...
I need measuring two buzzer working on 40Hz to verify the interaction to the circuit and SPL.
Below is my test schematic figure, I planed to use the free version of TrueRTA to measure the SPL, do any suggestion?
should I prepare rheostat or variometer or varicapacitance to measure the impedance...
Dear professionals
I need to build a power tranducer to drive a eletromagnetic buzzer.The residential electricity in USA is 110V 60Hz, I need the output to be 110V 40hz in square wave with with limited output current.
How can I get the transducer, please help, thank you in advance.
Finally, I move from Antenna & Propagation to here. I have a project using more than 100 acoustic electromagnetic buzzer to get the strongest pressure at a 3m away target. Actually the buzzer is acoustic small at 40Hz, about 25mmX25mmX25mm in size. According to the requirement the array can not...
Do anyone here have the knowledge about acoustic array made up by many microphones. The array will be used for probing of the atmospheric boundary layer. I want to know the best method to simulate it and calculate the mutual coupling effect between elements.
Thank you in advance!
Do anybody hear about the Continuous Transverse Stub (CTS) antenna or Thinkom before? This antenna look like the best candidate for the millimeter integrated radio, depicted as 50% wider in bandwidth, 20% higher in efficiency, 6 to 15 dB lower in sidelobes, 70% lower in profile, 40% lighter in...
Usually, Microwave point to point antenna use single dielectric to model redome.(e.g. ABS or PC). And the thickness is lambda/2 of the center frequency.
In order to reduce the weight of the redome and broaden its bandwidth, we want to adopt the three layer material to cover...
