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Admin
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Everything posted by Admin
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What frequency do you want?
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Ant_kid, are you interested in antennas for drones?
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... yes. can adjust the impedance or something like that,,,,
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the uplink and dowlink it should be roughly the same...
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which antenna?
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What dimensions did you use for FR4 thick 1mm ,,, ??? I have not posted such dimensions....!!!
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,,,if CP is Circular Polarisation,,,,YES...!!!!
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,,, for 1200MHz,don"t you think that the antenna is too big, about 4,8 times...???
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Something like that ...???
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,,,and here is a patch-yagi antenna made only from tin cans....
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this means; the efficiency of an antenna is a ratio of the power delivered to the antenna relative to the power radiated from the antenna. A high efficiency antenna has most of the power present at the antenna's input radiated away. A low efficiency antenna has most of the power absorbed as losses within the antenna, or reflected away due to impedance mismatch. the efficiencies; -radiation efficiencies(magnitude in dB) -total efficiencies(magnitude in dB) -gain(in dBi)
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"I do not know exactly, I think 59mm, but the simulation should be done
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Yes,,,!!!
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and here are the results for the frequency band 2500-2620MHz
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только для образца .. !!!
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круговые диски более эффективны
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да, конечно
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Оkay Босс, я понимаю,,,!!!
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«Ну, Босс, но это широкополосная,,,!!!
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Yes, something like that
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,,,,many dimensions are missing and the left side seems to have a different distance from the reflector...!!!
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Dual Circularly Polarised Patch Antenna
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The unique properties of NorCLAD make it perfectly suited for use in microstrip patch antenna designs. NorCLAD has a low dielectric constant and low dissipation factor and good thermal performance that make it an excellent choice for GPS receiver and WLAN router antennas. It is an isotropic material that gives it excellent Dk tolerance control for improved center frequency performance. The material is available up to 0.500 in. thick for bandwidth considerations. NorCLAD is frequently used in stacked microstrip patch antenna applications. Available thicknesses range from 0.060 to 0.500 in. and in 20 in. x 22 in. panels. Available copper weight per thickness ranges from 0.5 to 2.0 oz./ft2. Important properties of NorCLAD include: Dielectric constant of 2.55 Dissipation factor of 0.0011 at 3 GHz Operating temperature range of -55° C to +125° C
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I do not know the price ,,,, see this,,,,http://www.polyflon.com/
