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Been doing RF/Microwave/Antenna design for 20 years. Fortunately I have stayed hands-on with hardware development. Start with simulation, then PCB layout, fol
by madengr 10y ago
Been doing RF/Microwave/Antenna design for 20 years. Fortunately I have stayed hands-on with hardware development. Start with simulation, then PCB layout, followed by lots of measurements in the lab. Sometimes meetings for customer requirements, writing technical parts of proposals, getting capital equipment purchased, etc.
- sunstone 10y agoHey what's with that 'path loss' equation? Looks sketchy to me.
- rfdave 10y agoLooks sketchy in what way?
- madengr 10y agoI'd say it is sketchy as people say path loss increases with frequency; well it doesn't if you have the same physical antenna apertures (think parabolic dish). Though the formula is called a loss since it's used that way from a circuit perspective, and you treat the antenna gains as not related to aperture, so loss does then increase with frequency.
- sunstone 10y agoYes that frequency term is precisely the sketchy bit. Because of that the equation doesn't conserve energy which is normally considered a bad sign. On the other hand to do it properly you have throw out the 'reciprocity' of sending and receiving antennas. They are not really the same at all.