ism-transceiver-915mhz

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f6db9554c6 Save changes on old design and start work on redesign master Kelvin Ly 2020-02-16 22:11:31 -0500
54602a3c65 Regenerate in old format Kelvin Ly 2019-12-20 00:41:04 -0500
466fa2afdb Regenerate Gerbers, just to be safe Kelvin Ly 2019-12-20 00:11:30 -0500
37e591befd Generate Gerbers and BOM Kelvin Ly 2019-12-19 08:05:36 -0500
2b0c4b7996 Finish layout Kelvin Ly 2019-10-05 08:38:34 -0400
8148c6ff9c Add mounting holes, fix DRC errors Kelvin Ly 2019-10-03 08:03:45 -0400
76263f1dc8 Autofill finish Kelvin Ly 2019-10-03 08:00:05 -0400
3fbbcc377e Add in some more footprints before autofill Kelvin Ly 2019-10-03 07:59:46 -0400
a5358c208f Remove old project Kelvin Ly 2019-10-03 07:54:31 -0400
f07095af68 Move test mixer files down a directory Kelvin Ly 2019-10-03 07:53:45 -0400
87dc12866c Footprint everything(?) Kelvin Ly 2019-10-03 07:50:51 -0400
83d6240ff5 Fix mixer simulation and start work on test mixer PCB Kelvin Ly 2019-10-01 08:40:00 -0400
3df9f0dc17 Start work on simpler RF board using less discrete components so it's not a giant mess Kelvin Ly 2019-09-25 19:21:54 -0400
d223bdc0ac Autofill Kelvin Ly 2019-09-24 17:49:32 -0400
d760529a46 Footprint more stuff Kelvin Ly 2019-09-24 17:49:02 -0400
0aa924ac3b Autofill Kelvin Ly 2019-09-24 00:07:58 -0400
9eea79d190 Add in a couple more components, save before autofill Kelvin Ly 2019-09-24 00:07:41 -0400
897916cdef Autofill Kelvin Ly 2019-09-23 22:53:32 -0400
99222aa4e9 Footprint a lot of stuff; save before autofill Kelvin Ly 2019-09-23 22:53:12 -0400
264021c1d2 Reannotate everything; I'm trying to cut down the number of components Kelvin Ly 2019-09-22 20:10:10 -0400
fa9ccab9d7 Autofill Kelvin Ly 2019-09-20 08:52:04 -0400
e3f68a8fb2 Add more footprints, saving before autofill Kelvin Ly 2019-09-20 08:42:04 -0400
c1d28a9629 Autofill Kelvin Ly 2019-09-19 23:56:45 -0400
4da702695d Footprint some stuff Kelvin Ly 2019-09-19 23:55:52 -0400
164b4ebcd5 Autofill all; TODO improve formatting on autofill_all output Kelvin Ly 2019-09-19 08:36:29 -0400
c24b69044a Autofill; lots left to do Kelvin Ly 2019-09-19 08:35:47 -0400
8bd9dc73a7 All component values set (TODO change transistor gain stages to match values from experimentation Kelvin Ly 2019-09-18 23:16:08 -0400
d5b0c3b138 Add matching PNP/NPN transistor pairs, fix pin numbering for BFU520R transistors TODO fix biasing on power stage, source last NPN transistor, autofill and start sourcing passives Kelvin Ly 2019-09-18 09:01:16 -0400
4f491a33b4 The footprintening continues Kelvin Ly 2019-09-17 23:23:31 -0400
c0528823e4 Fix some parts Kelvin Ly 2019-09-17 09:07:40 -0400
d3a8292cd9 Start work in footprinting everything Kelvin Ly 2019-09-17 09:02:27 -0400
cf973da102 Wire out all control signals to connectors TODO PLL charge pump loop, bypass caps in attenuator circuit, antialiasing filter for ADC frontend Kelvin Ly 2019-09-16 08:36:57 -0400
7cb938fd7d Design DAC/ADC stages, pass out all control signals to top sheet Kelvin Ly 2019-09-13 08:21:37 -0400
91d8fee681 Source hybrid quadrature coupler, add front end LC filter Kelvin Ly 2019-09-12 22:16:17 -0400
99b37cc088 Work on simulations a litte more.. looks like testing in-situ is honestly the best option Kelvin Ly 2019-07-11 22:56:31 -0400
c99c758ae7 Woo, the degenerated design works but probably isn't worthwhile because of the gain loss Kelvin Ly 2019-07-06 00:00:08 -0400
42b58b6296 Merge stuff I guess, hopefully this doesn't break too much Kelvin Ly 2019-07-05 21:38:34 -0400
8e0b01b39f Optimize against NF directly Kelvin Ly 2019-07-05 11:15:02 -0400
448c61753a Play around with optimizing degenerative inductor value Kelvin Ly 2019-07-05 09:24:41 -0400
a31bae2e8a Test out noisy series operations; at least the function runs successfully Kelvin Ly 2019-07-05 00:32:14 -0400
792a752016 Rerun low_noise.ipynb using more accurate Vce value Kelvin Ly 2019-06-29 21:45:43 -0400
fd493b1ef4 Work on LNA staging, attenuator design, various fixes elsewhere Kelvin Ly 2019-06-29 21:45:12 -0400
f4fce42788 Update so that it works witth the current scikit-rf master; TODO figure out how to version scikit-rf Kelvin Ly 2019-06-28 01:19:19 -0400
4d42fd08e5 Finish TX mixer; added IF buffer Kelvin Ly 2019-06-25 23:39:33 -0400
94832c78b6 FIx merge conflicts Kelvin Ly 2019-06-19 10:55:16 -0400
c042944bab Fix symbol tables I guess Kelvin Ly 2019-06-19 10:49:32 -0400
8e8de32691 Save changes while moving over to the new laptop Kelvin Ly 2019-06-19 07:50:05 -0400
cfbe925fda Lower bias current to 5 mA Kelvin Ly 2019-05-17 23:06:11 -0400
a71bee2866 Fix typo that was messing up conjugate match calculations Kelvin Ly 2019-05-17 22:42:40 -0400
1f4c96e8d7 Second stage almost working, still off for some reason Kelvin Ly 2019-05-17 08:29:11 -0400
1d474bbd32 Almost working LNA first and second stage; need to figure out why the second stage isn't conjugatively matching correctly Kelvin Ly 2019-05-17 01:32:47 -0400
a599c25d56 Work on LNA design; looks like minimal matching produces the best results Kelvin Ly 2019-05-14 09:05:09 -0400
bc29d8c3a5 Picked matched NPNs for IF amplifier stages Kelvin Ly 2019-04-30 23:45:05 -0400
e0cf34e057 Capture IF amplifier stages and work on LNA stages Kelvin Ly 2019-04-28 23:56:20 -0400
e1d250ba8e Fix scattering parameter phase calculations Kelvin Ly 2019-04-18 07:49:57 -0400
0721bb8db1 Finish diode mixer simulations and capture in schematic Kelvin Ly 2019-04-17 07:52:20 -0400
8af98d3163 Finish active mixer simulation; it looks good! Kelvin Ly 2019-04-15 08:30:11 -0400
4fb7daebca Match mixer LO input and RF output to 50 ohms Kelvin Ly 2019-04-14 02:59:21 -0400
5786d3573c Move qucsdata to the right directory Kelvin Ly 2019-04-13 23:27:34 -0400
5337f68e3e Copy in qucs Python files to process Qucs data in Python Kelvin Ly 2019-04-13 23:18:44 -0400
2e5082f8f0 Finish first draft of LO amplifier Kelvin Ly 2019-04-13 18:49:50 -0400
b9aec35934 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 Kelvin Ly 2019-04-13 15:17:12 -0400
01fa8e4fd9 Ignore QUCS-generated files Kelvin Ly 2019-04-13 09:22:36 -0400
2a1839f8bb Add SPICE models for BFU520* Kelvin Ly 2019-04-13 09:21:46 -0400
d250165add Start work on power amplifier stage and LO amplifier Kelvin Ly 2019-04-13 09:21:21 -0400
c519479121 Start work on schematics Kelvin Ly 2019-04-13 09:20:46 -0400
9062c59230 Add NXP BFU520 scattering parameters Kelvin Ly 2019-03-19 01:09:50 -0400
59b4ee9036 Test out cascading them to get more gain Kelvin Ly 2019-03-19 01:09:00 -0400
9f7bc578b4 Work on power amplifier design; got the matching networks set up, and they seem to work, a part from being almost marginally unstable Kelvin Ly 2019-03-19 01:08:36 -0400

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