 Kelvin Ly
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cf973da102
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Wire out all control signals to connectors TODO PLL charge pump loop, bypass caps in attenuator circuit, antialiasing filter for ADC frontend
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2019-09-16 08:36:57 -04:00 |
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Kelvin Ly
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7cb938fd7d
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Design DAC/ADC stages, pass out all control signals to top sheet
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2019-09-13 08:21:37 -04:00 |
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Kelvin Ly
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91d8fee681
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Source hybrid quadrature coupler, add front end LC filter
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2019-09-12 22:16:17 -04:00 |
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Kelvin Ly
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99b37cc088
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Work on simulations a litte more.. looks like testing in-situ is honestly the best option
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2019-07-11 22:56:31 -04:00 |
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Kelvin Ly
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c99c758ae7
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Woo, the degenerated design works but probably isn't worthwhile because of the gain loss
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2019-07-06 00:00:08 -04:00 |
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Kelvin Ly
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42b58b6296
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Merge stuff I guess, hopefully this doesn't break too much
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2019-07-05 21:38:34 -04:00 |
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Kelvin Ly
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8e0b01b39f
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Optimize against NF directly
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2019-07-05 11:15:02 -04:00 |
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Kelvin Ly
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448c61753a
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Play around with optimizing degenerative inductor value
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2019-07-05 09:24:41 -04:00 |
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Kelvin Ly
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a31bae2e8a
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Test out noisy series operations; at least the function runs successfully
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2019-07-05 00:32:14 -04:00 |
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Kelvin Ly
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792a752016
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Rerun low_noise.ipynb using more accurate Vce value
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2019-06-29 21:45:43 -04:00 |
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Kelvin Ly
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fd493b1ef4
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Work on LNA staging, attenuator design, various fixes elsewhere
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2019-06-29 21:45:12 -04:00 |
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Kelvin Ly
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f4fce42788
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Update so that it works witth the current scikit-rf master; TODO figure out how to version scikit-rf
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2019-06-28 01:19:19 -04:00 |
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Kelvin Ly
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4d42fd08e5
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Finish TX mixer; added IF buffer
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2019-06-25 23:39:33 -04:00 |
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Kelvin Ly
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94832c78b6
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FIx merge conflicts
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2019-06-19 10:55:16 -04:00 |
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Kelvin Ly
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c042944bab
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Fix symbol tables I guess
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2019-06-19 10:49:32 -04:00 |
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Kelvin Ly
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8e8de32691
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Save changes while moving over to the new laptop
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2019-06-19 07:50:05 -04:00 |
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Kelvin Ly
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cfbe925fda
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Lower bias current to 5 mA
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2019-05-17 23:06:11 -04:00 |
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Kelvin Ly
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a71bee2866
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Fix typo that was messing up conjugate match calculations
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2019-05-17 22:42:40 -04:00 |
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Kelvin Ly
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1f4c96e8d7
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Second stage almost working, still off for some reason
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2019-05-17 08:29:11 -04:00 |
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Kelvin Ly
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1d474bbd32
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Almost working LNA first and second stage; need to figure out why the second stage isn't conjugatively matching correctly
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2019-05-17 01:32:47 -04:00 |
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Kelvin Ly
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a599c25d56
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Work on LNA design; looks like minimal matching produces the best results
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2019-05-14 09:05:09 -04:00 |
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Kelvin Ly
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bc29d8c3a5
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Picked matched NPNs for IF amplifier stages
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2019-04-30 23:45:05 -04:00 |
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Kelvin Ly
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e0cf34e057
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Capture IF amplifier stages and work on LNA stages
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2019-04-28 23:56:20 -04:00 |
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Kelvin Ly
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e1d250ba8e
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Fix scattering parameter phase calculations
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2019-04-18 07:49:57 -04:00 |
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Kelvin Ly
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0721bb8db1
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Finish diode mixer simulations and capture in schematic
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2019-04-17 07:52:20 -04:00 |
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Kelvin Ly
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8af98d3163
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Finish active mixer simulation; it looks good!
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2019-04-15 08:30:11 -04:00 |
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Kelvin Ly
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4fb7daebca
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Match mixer LO input and RF output to 50 ohms
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2019-04-14 02:59:21 -04:00 |
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Kelvin Ly
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5786d3573c
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Move qucsdata to the right directory
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2019-04-13 23:27:34 -04:00 |
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Kelvin Ly
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5337f68e3e
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Copy in qucs Python files to process Qucs data in Python
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2019-04-13 23:18:44 -04:00 |
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Kelvin Ly
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2e5082f8f0
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Finish first draft of LO amplifier
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2019-04-13 18:49:50 -04:00 |
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Kelvin Ly
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b9aec35934
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LO amplifier simulation is pretty close to done; it seems like the BFU520XR will just barely do the job; compression point is >6 dBm, amplifier seems sufficiently stable
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2019-04-13 15:17:12 -04:00 |
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Kelvin Ly
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01fa8e4fd9
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Ignore QUCS-generated files
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2019-04-13 09:22:36 -04:00 |
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Kelvin Ly
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2a1839f8bb
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Add SPICE models for BFU520*
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2019-04-13 09:21:46 -04:00 |
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Kelvin Ly
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d250165add
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Start work on power amplifier stage and LO amplifier
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2019-04-13 09:21:21 -04:00 |
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Kelvin Ly
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c519479121
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Start work on schematics
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2019-04-13 09:20:46 -04:00 |
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Kelvin Ly
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9062c59230
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Add NXP BFU520 scattering parameters
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2019-03-19 01:09:50 -04:00 |
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Kelvin Ly
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59b4ee9036
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Test out cascading them to get more gain
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2019-03-19 01:09:00 -04:00 |
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Kelvin Ly
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9f7bc578b4
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Work on power amplifier design; got the matching networks set up, and they seem to work, a part from being almost marginally unstable
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2019-03-19 01:08:36 -04:00 |