| BAUD | symbol rate | Note that "baud rate" is like saying "symbol rate rate" which doesn't make any sense, does it? Thanks, Mike! |
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| BAW | bulk acoustic wave | Similar to surface acoustic wave technology. |
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| BB | baseband | -- |
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| BER | bit error rate | The number of errors over a given period of time expressed as a percentage. |
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| BF | beamformer | -- |
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| BFN | beam-forming network | A system of power combiners and phase shifters that is used to steer an array. |
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| BICMOS | bipolar complementary metal-oxide semiconductor | The RF devices that are used in SiGe. |
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| BIT | built-in test | Refers to output signals that are generated by a piece of hardware whose only function is to help you determine if your hardware is working. |
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| BITE | built-in test equipment | See above. Alternately, a verb, as in reality BITEs. |
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| BJT | bipolar junction transistor | A good old-fashioned semiconductor device recently made useful into the lower microwave frequencies. |
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| BLUETOOTH | Bluetooth | A wireless networking convention named after a dead Danish king |
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| BNC | bayonet N-type connector | A type of RF connector from the dark ages (useful only to UHF frequencies). |
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| BOM | bill of materials | The whole ball of wax required to assemble all of your widgets. |
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| BPF | band-pass filter | A two-port network that rejects signals outside of a certain frequency band. |
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| BPSK | binary phase-shift keying | Thanks to Adam for the correction! |
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| BS | base station | Also, bravo sierra... |
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| BSD | Blind spot detection | An application of automotive radar |
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| BSOM | beats the (stuffing) out of me | Who busted the scope probe? BSOM! |
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| BW | bandwidth | -- |
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| BWO | backward wave oscillator | -- |
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