forked from surfer-rfid/PCB
-
Notifications
You must be signed in to change notification settings - Fork 0
/
RFIDr_Open_ANT_ACCESS.sch
773 lines (773 loc) · 18.7 KB
/
RFIDr_Open_ANT_ACCESS.sch
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A 11000 8500
encoding utf-8
Sheet 17 17
Title "RFIDr_Open_ANT_ACCESS"
Date "2020-05-21"
Rev "A"
Comp "Superlative Semiconductor LLC"
Comment1 "Copyright 2021 Superlative Semiconductor LLC."
Comment2 "Licensed under CERN-OHL-P v2 or later."
Comment3 "This source provided WITHOUT ANY EXPRESS OR IMPLIED WARRANTY."
Comment4 "Author: E. Keehr"
$EndDescr
$Comp
L RFIDr_Open_Lib:LED-RFIDr_Open D11
U 1 1 5E323AA7
P 5575 3375
F 0 "D11" H 5575 3475 50 0000 C CNN
F 1 "LED_YLW" H 5575 3275 50 0000 C CNN
F 2 "RFIDr_Open:LED_0603" H 5575 3200 30 0000 C CNN
F 3 "" H 5575 3375 60 0000 C CNN
1 5575 3375
0 -1 -1 0
$EndComp
$Comp
L RFIDr_Open_Lib:LED-RFIDr_Open D12
U 1 1 5E323AAE
P 5575 4975
F 0 "D12" H 5575 5075 50 0000 C CNN
F 1 "LED_GRN" H 5575 4875 50 0000 C CNN
F 2 "RFIDr_Open:LED_0603" H 5550 5150 30 0000 C CNN
F 3 "" H 5575 4975 60 0000 C CNN
1 5575 4975
0 -1 -1 0
$EndComp
$Comp
L Device:R R79
U 1 1 5E323AB5
P 5575 4550
F 0 "R79" V 5655 4550 50 0000 C CNN
F 1 "24k" V 5575 4550 50 0000 C CNN
F 2 "Resistors_SMD:R_0402" V 5475 4525 30 0000 C CNN
F 3 "" H 5575 4550 30 0000 C CNN
1 5575 4550
1 0 0 -1
$EndComp
$Comp
L Device:R R78
U 1 1 5E323ABC
P 5575 2950
F 0 "R78" V 5655 2950 50 0000 C CNN
F 1 "24k" V 5575 2950 50 0000 C CNN
F 2 "Resistors_SMD:R_0402" V 5475 2925 30 0000 C CNN
F 3 "" H 5575 2950 30 0000 C CNN
1 5575 2950
1 0 0 -1
$EndComp
$Comp
L power:GNDA #PWR0492
U 1 1 5E323AC5
P 5575 5375
F 0 "#PWR0492" H 5575 5125 50 0001 C CNN
F 1 "GNDA" H 5575 5225 50 0000 C CNN
F 2 "" H 5575 5375 60 0000 C CNN
F 3 "" H 5575 5375 60 0000 C CNN
1 5575 5375
1 0 0 -1
$EndComp
Wire Wire Line
5575 5175 5575 5375
Wire Wire Line
5575 4775 5575 4700
Wire Wire Line
5575 3175 5575 3100
Wire Wire Line
5575 3700 5575 3575
$Comp
L Device:C_Small C59
U 1 1 5E324619
P 8625 5650
F 0 "C59" V 8550 5725 50 0000 L CNN
F 1 "100p" V 8550 5400 50 0000 L CNN
F 2 "Capacitors_SMD:C_0402" V 8725 5775 30 0000 C CNN
F 3 "" H 8625 5650 60 0000 C CNN
1 8625 5650
0 -1 1 0
$EndComp
$Comp
L Device:C_Small C58
U 1 1 5E324620
P 8625 4150
F 0 "C58" V 8675 4225 50 0000 L CNN
F 1 "100p" V 8675 3875 50 0000 L CNN
F 2 "Capacitors_SMD:C_0402" V 8525 4175 30 0000 C CNN
F 3 "" H 8625 4150 60 0000 C CNN
1 8625 4150
0 -1 -1 0
$EndComp
Text Label 5800 2650 2 60 ~ 0
ANT0
Text Label 5725 4250 2 60 ~ 0
ANT1
$Comp
L Device:C_Small C61
U 1 1 5E324629
P 6375 4550
F 0 "C61" H 6385 4620 50 0000 L CNN
F 1 "33p" H 6385 4470 50 0000 L CNN
F 2 "Capacitors_SMD:C_0402" V 6275 4550 30 0000 C CNN
F 3 "" H 6375 4550 60 0000 C CNN
1 6375 4550
1 0 0 1
$EndComp
$Comp
L Device:C_Small C60
U 1 1 5E324630
P 6375 2875
F 0 "C60" H 6200 2950 50 0000 L CNN
F 1 "33p" H 6225 2775 50 0000 L CNN
F 2 "Capacitors_SMD:C_0402" V 6500 2800 30 0000 C CNN
F 3 "" H 6375 2875 60 0000 C CNN
1 6375 2875
-1 0 0 -1
$EndComp
$Comp
L power:GNDA #PWR0493
U 1 1 5E324637
P 6375 4725
F 0 "#PWR0493" H 6375 4475 50 0001 C CNN
F 1 "GNDA" H 6375 4575 50 0000 C CNN
F 2 "" H 6375 4725 60 0000 C CNN
F 3 "" H 6375 4725 60 0000 C CNN
1 6375 4725
-1 0 0 -1
$EndComp
$Comp
L power:GNDA #PWR0494
U 1 1 5E32463D
P 9400 5800
F 0 "#PWR0494" H 9400 5550 50 0001 C CNN
F 1 "GNDA" V 9400 5575 50 0000 C CNN
F 2 "" H 9400 5800 60 0000 C CNN
F 3 "" H 9400 5800 60 0000 C CNN
1 9400 5800
0 1 -1 0
$EndComp
$Comp
L power:GNDA #PWR0495
U 1 1 5E324643
P 9400 5500
F 0 "#PWR0495" H 9400 5250 50 0001 C CNN
F 1 "GNDA" V 9400 5275 50 0000 C CNN
F 2 "" H 9400 5500 60 0000 C CNN
F 3 "" H 9400 5500 60 0000 C CNN
1 9400 5500
0 1 -1 0
$EndComp
$Comp
L power:GNDA #PWR0496
U 1 1 5E324649
P 6375 3075
F 0 "#PWR0496" H 6375 2825 50 0001 C CNN
F 1 "GNDA" H 6375 2925 50 0000 C CNN
F 2 "" H 6375 3075 60 0000 C CNN
F 3 "" H 6375 3075 60 0000 C CNN
1 6375 3075
-1 0 0 -1
$EndComp
$Comp
L power:GNDA #PWR0497
U 1 1 5E32464F
P 9425 4000
F 0 "#PWR0497" H 9425 3750 50 0001 C CNN
F 1 "GNDA" V 9425 3800 50 0000 C CNN
F 2 "" H 9425 4000 60 0000 C CNN
F 3 "" H 9425 4000 60 0000 C CNN
1 9425 4000
0 1 -1 0
$EndComp
$Comp
L power:GNDA #PWR0498
U 1 1 5E32465B
P 8925 4700
F 0 "#PWR0498" H 8925 4450 50 0001 C CNN
F 1 "GNDA" H 8925 4550 50 0000 C CNN
F 2 "" H 8925 4700 60 0000 C CNN
F 3 "" H 8925 4700 60 0000 C CNN
1 8925 4700
-1 0 0 -1
$EndComp
$Comp
L RFIDr_Open_Lib:SKY13350 U22
U 1 1 5E324661
P 7650 3950
F 0 "U22" H 7700 3500 60 0000 C CNN
F 1 "SKY13350" H 8125 3500 60 0000 C CNN
F 2 "RFIDr_Open:SKY13350" H 8025 4000 30 0000 C CNN
F 3 "" H 7650 3950 60 0000 C CNN
1 7650 3950
-1 0 0 -1
$EndComp
$Comp
L power:GNDA #PWR0499
U 1 1 5E324668
P 7975 4250
F 0 "#PWR0499" H 7975 4000 50 0001 C CNN
F 1 "GNDA" V 7975 4025 50 0000 C CNN
F 2 "" H 7975 4250 60 0000 C CNN
F 3 "" H 7975 4250 60 0000 C CNN
1 7975 4250
0 -1 1 0
$EndComp
Text HLabel 5500 2650 0 60 Input ~ 0
ANT0
Text HLabel 5500 4250 0 60 Input ~ 0
ANT1
$Comp
L Device:R R85
U 1 1 5E324670
P 5975 4250
F 0 "R85" V 6055 4250 50 0000 C CNN
F 1 "470" V 5975 4250 50 0000 C CNN
F 2 "Resistors_SMD:R_0402" V 5875 4225 30 0000 C CNN
F 3 "" H 5975 4250 30 0000 C CNN
1 5975 4250
0 1 -1 0
$EndComp
$Comp
L Device:R R15
U 1 1 5E324677
P 5975 2650
F 0 "R15" V 6055 2650 50 0000 C CNN
F 1 "470" V 5975 2650 50 0000 C CNN
F 2 "Resistors_SMD:R_0402" V 5875 2625 30 0000 C CNN
F 3 "" H 5975 2650 30 0000 C CNN
1 5975 2650
0 -1 1 0
$EndComp
Wire Wire Line
8725 4150 8925 4150
Wire Wire Line
8725 5650 8925 5650
Wire Wire Line
9425 4300 9525 4300
Wire Wire Line
9400 5500 9525 5500
Connection ~ 8925 4150
Wire Wire Line
9400 5800 9525 5800
Wire Wire Line
6375 2975 6375 3075
Wire Wire Line
6375 4650 6375 4725
Wire Wire Line
9425 4000 9525 4000
Wire Wire Line
8925 4650 8925 4700
Wire Wire Line
9875 3700 9875 3750
Wire Wire Line
9875 5250 9875 5200
Wire Wire Line
9875 6050 9875 6150
Wire Wire Line
9875 4550 9875 4600
Wire Wire Line
6650 4250 6650 5650
Wire Wire Line
6650 4250 6800 4250
Wire Wire Line
6525 4150 6800 4150
Wire Wire Line
6350 4050 6800 4050
Wire Wire Line
7975 4250 7850 4250
Wire Wire Line
6125 2650 6375 2650
Wire Wire Line
5500 2650 5575 2650
Wire Wire Line
5500 4250 5575 4250
$Comp
L RFIDr_Open_Lib:XGD10402KR D9
U 1 1 5E3246B4
P 8925 4475
F 0 "D9" H 8950 4575 30 0000 R CNN
F 1 "XGD10402KR" H 9075 4400 30 0000 R CNN
F 2 "Resistors_SMD:R_0402" H 8850 4350 30 0000 C CNN
F 3 "" H 8925 4475 60 0000 C CNN
1 8925 4475
0 1 -1 0
$EndComp
$Comp
L RFIDr_Open_Lib:XGD10402KR D10
U 1 1 5E3246BB
P 8925 6000
F 0 "D10" H 8950 6100 30 0000 R CNN
F 1 "XGD10402KR" H 9075 5925 30 0000 R CNN
F 2 "Resistors_SMD:R_0402" H 8850 5875 30 0000 C CNN
F 3 "" H 8925 6000 60 0000 C CNN
1 8925 6000
0 -1 1 0
$EndComp
$Comp
L RFIDr_Open_Lib:SMA_72970 U18
U 1 1 5E3246C2
P 9525 4000
F 0 "U18" H 9675 3475 60 0000 C CNN
F 1 "SMA_72970" H 9675 3575 60 0000 C CNN
F 2 "RFIDr_Open:SMA_72970" H 9675 3350 30 0000 C CNN
F 3 "" H 9475 4000 60 0000 C CNN
1 9525 4000
0 -1 1 0
$EndComp
$Comp
L RFIDr_Open_Lib:SMA_72970 U19
U 1 1 5E3246C9
P 9525 5500
F 0 "U19" H 9675 4975 60 0000 C CNN
F 1 "SMA_72970" H 9675 5075 60 0000 C CNN
F 2 "RFIDr_Open:SMA_72970" H 9675 4850 30 0000 C CNN
F 3 "" H 9475 5500 60 0000 C CNN
1 9525 5500
0 -1 1 0
$EndComp
$Comp
L Device:R R57
U 1 1 5E3246D0
P 9050 3050
F 0 "R57" V 9130 3050 50 0000 C CNN
F 1 "DNI" V 9050 3050 50 0000 C CNN
F 2 "Resistors_SMD:R_0402" H 8725 3050 30 0000 C CNN
F 3 "" H 9050 3050 30 0000 C CNN
1 9050 3050
1 0 0 1
$EndComp
$Comp
L Device:R R64
U 1 1 5E3246D8
P 6200 4050
F 0 "R64" V 6280 4050 50 0000 C CNN
F 1 "0" V 6200 4050 50 0000 C CNN
F 2 "Resistors_SMD:R_0402" V 6100 4025 30 0000 C CNN
F 3 "" H 6200 4050 30 0000 C CNN
1 6200 4050
0 1 1 0
$EndComp
$Comp
L Device:R R65
U 1 1 5E3246E1
P 8675 1975
F 0 "R65" V 8755 1975 50 0000 C CNN
F 1 "DNI" V 8675 1975 50 0000 C CNN
F 2 "Resistors_SMD:R_0402" V 8825 2075 30 0000 C CNN
F 3 "" H 8675 1975 30 0000 C CNN
1 8675 1975
0 -1 -1 0
$EndComp
Wire Wire Line
5100 1975 8525 1975
$Comp
L Device:R R95
U 1 1 5E3246EB
P 9425 1975
F 0 "R95" V 9505 1975 50 0000 C CNN
F 1 "0" V 9425 1975 50 0000 C CNN
F 2 "Resistors_SMD:R_0402" V 9575 1900 30 0000 C CNN
F 3 "" H 9425 1975 30 0000 C CNN
1 9425 1975
0 -1 -1 0
$EndComp
Text Label 4600 4050 2 60 ~ 0
TX_ANT
$Comp
L RFIDr_Open_Lib:J0910CF15B0100 U20
U 1 1 5E32523F
P 4025 3750
F 0 "U20" H 4475 3800 60 0000 C CNN
F 1 "J0910CF15B0100" V 3950 4100 60 0000 C CNN
F 2 "RFIDr_Open:J0910CF15B0100" H 4675 3200 30 0000 C CNN
F 3 "" H 4025 3750 60 0000 C CNN
1 4025 3750
0 1 1 0
$EndComp
$Comp
L Device:C_Small C57
U 1 1 5E325246
P 4825 4050
F 0 "C57" V 4875 4125 50 0000 L CNN
F 1 "100p" V 4875 3800 50 0000 L CNN
F 2 "Capacitors_SMD:C_0402" V 4725 4075 30 0000 C CNN
F 3 "" H 4825 4050 60 0000 C CNN
1 4825 4050
0 -1 1 0
$EndComp
Wire Wire Line
4725 4050 4225 4050
$Comp
L power:GNDA #PWR0500
U 1 1 5E325357
P 3875 4700
F 0 "#PWR0500" H 3875 4450 50 0001 C CNN
F 1 "GNDA" V 3875 4475 50 0000 C CNN
F 2 "" H 3875 4700 60 0000 C CNN
F 3 "" H 3875 4700 60 0000 C CNN
1 3875 4700
1 0 0 -1
$EndComp
Text Label 3075 4800 0 60 ~ 0
TERM
Wire Wire Line
3875 4550 3875 4625
Wire Wire Line
3775 4550 3775 4625
Wire Wire Line
3775 4625 3875 4625
Connection ~ 3875 4625
Wire Wire Line
3675 4550 3675 4800
Wire Wire Line
3675 4800 3075 4800
$Comp
L power:GNDA #PWR0501
U 1 1 5E325C7C
P 3675 3300
F 0 "#PWR0501" H 3675 3050 50 0001 C CNN
F 1 "GNDA" V 3675 3075 50 0000 C CNN
F 2 "" H 3675 3300 60 0000 C CNN
F 3 "" H 3675 3300 60 0000 C CNN
1 3675 3300
-1 0 0 1
$EndComp
Wire Wire Line
3775 3550 3775 3400
Wire Wire Line
3775 3400 3675 3400
Wire Wire Line
3675 3300 3675 3400
Connection ~ 3675 3400
Wire Wire Line
3875 2325 3875 3550
Text Label 3825 2325 2 60 ~ 0
RX_ANT
Text Label 950 2325 0 60 ~ 0
RX_FILT
$Comp
L power:GNDA #PWR0502
U 1 1 5E326BE1
P 1225 2175
F 0 "#PWR0502" H 1225 1925 50 0001 C CNN
F 1 "GNDA" V 1225 1950 50 0000 C CNN
F 2 "" H 1225 2175 60 0000 C CNN
F 3 "" H 1225 2175 60 0000 C CNN
1 1225 2175
0 1 -1 0
$EndComp
$Comp
L power:GNDA #PWR0503
U 1 1 5E326BE7
P 2225 2075
F 0 "#PWR0503" H 2225 1825 50 0001 C CNN
F 1 "GNDA" H 2225 1925 50 0000 C CNN
F 2 "" H 2225 2075 60 0000 C CNN
F 3 "" H 2225 2075 60 0000 C CNN
1 2225 2075
1 0 0 1
$EndComp
$Comp
L RFIDr_Open_Lib:PAT1220 U33
U 1 1 5E326BED
P 2725 2375
F 0 "U33" H 2987 2572 60 0000 C CNN
F 1 "PAT1220" H 2987 2466 60 0000 C CNN
F 2 "RFIDr_Open:PAT1220" H 2725 2375 60 0001 C CNN
F 3 "" H 2725 2375 60 0001 C CNN
1 2725 2375
1 0 0 1
$EndComp
$Comp
L RFIDr_Open_Lib:SF2049E U39
U 1 1 5E326BF4
P 2050 2150
F 0 "U39" H 2337 2337 60 0000 C CNN
F 1 "SF2049E" H 2337 2231 60 0000 C CNN
F 2 "RFIDr_Open:SF2049E" H 2050 2150 60 0001 C CNN
F 3 "" H 2050 2150 60 0001 C CNN
1 2050 2150
-1 0 0 -1
$EndComp
Text Label 2525 2325 2 60 ~ 0
RX_ATT
$Comp
L power:GNDA #PWR0504
U 1 1 5E326BFC
P 1225 2425
F 0 "#PWR0504" H 1225 2175 50 0001 C CNN
F 1 "GNDA" V 1225 2200 50 0000 C CNN
F 2 "" H 1225 2425 60 0000 C CNN
F 3 "" H 1225 2425 60 0000 C CNN
1 1225 2425
0 1 -1 0
$EndComp
$Comp
L power:GNDA #PWR0505
U 1 1 5E326C02
P 2300 2425
F 0 "#PWR0505" H 2300 2175 50 0001 C CNN
F 1 "GNDA" V 2300 2200 50 0000 C CNN
F 2 "" H 2300 2425 60 0000 C CNN
F 3 "" H 2300 2425 60 0000 C CNN
1 2300 2425
0 -1 1 0
$EndComp
Wire Wire Line
1375 2325 950 2325
Wire Wire Line
1225 2175 1300 2175
Wire Wire Line
3450 2325 3875 2325
Wire Wire Line
2525 2325 2150 2325
Wire Wire Line
1375 2425 1225 2425
Wire Wire Line
2300 2425 2150 2425
Wire Wire Line
2150 2225 2225 2225
Wire Wire Line
2225 2075 2225 2225
Wire Wire Line
1375 2225 1300 2225
Wire Wire Line
1300 2225 1300 2175
Connection ~ 2225 2225
Wire Wire Line
6125 4250 6375 4250
Wire Wire Line
6525 4250 6525 4150
Wire Wire Line
6375 4450 6375 4250
Connection ~ 6375 4250
$Comp
L power:GNDA #PWR0506
U 1 1 5E32F7F1
P 8925 6275
F 0 "#PWR0506" H 8925 6025 50 0001 C CNN
F 1 "GNDA" H 8925 6125 50 0000 C CNN
F 2 "" H 8925 6275 60 0000 C CNN
F 3 "" H 8925 6275 60 0000 C CNN
1 8925 6275
-1 0 0 -1
$EndComp
Wire Wire Line
8925 6275 8925 6175
$Comp
L power:GNDA #PWR0507
U 1 1 5E32FB5D
P 9875 6150
F 0 "#PWR0507" H 9875 5900 50 0001 C CNN
F 1 "GNDA" H 9875 6000 50 0000 C CNN
F 2 "" H 9875 6150 60 0000 C CNN
F 3 "" H 9875 6150 60 0000 C CNN
1 9875 6150
-1 0 0 -1
$EndComp
$Comp
L power:GNDA #PWR0508
U 1 1 5E32FC41
P 9875 5200
F 0 "#PWR0508" H 9875 4950 50 0001 C CNN
F 1 "GNDA" H 9875 5050 50 0000 C CNN
F 2 "" H 9875 5200 60 0000 C CNN
F 3 "" H 9875 5200 60 0000 C CNN
1 9875 5200
1 0 0 1
$EndComp
Wire Wire Line
6375 2650 6375 2775
Wire Wire Line
7925 2650 7925 4050
Wire Wire Line
7925 4050 7850 4050
Connection ~ 6375 2650
$Comp
L power:GNDA #PWR0509
U 1 1 5E3308D4
P 9875 3700
F 0 "#PWR0509" H 9875 3450 50 0001 C CNN
F 1 "GNDA" H 9875 3550 50 0000 C CNN
F 2 "" H 9875 3700 60 0000 C CNN
F 3 "" H 9875 3700 60 0000 C CNN
1 9875 3700
1 0 0 1
$EndComp
$Comp
L power:GNDA #PWR0510
U 1 1 5E33129F
P 9875 4600
F 0 "#PWR0510" H 9875 4350 50 0001 C CNN
F 1 "GNDA" H 9875 4450 50 0000 C CNN
F 2 "" H 9875 4600 60 0000 C CNN
F 3 "" H 9875 4600 60 0000 C CNN
1 9875 4600
-1 0 0 -1
$EndComp
$Comp
L power:GNDA #PWR0511
U 1 1 5E3314A2
P 9425 4300
F 0 "#PWR0511" H 9425 4050 50 0001 C CNN
F 1 "GNDA" V 9425 4100 50 0000 C CNN
F 2 "" H 9425 4300 60 0000 C CNN
F 3 "" H 9425 4300 60 0000 C CNN
1 9425 4300
0 1 -1 0
$EndComp
Wire Wire Line
8525 4150 7850 4150
Wire Wire Line
8925 5650 8925 5825
Connection ~ 8925 5650
Wire Wire Line
6650 5650 8525 5650
$Comp
L power:GNDA #PWR0512
U 1 1 5E332162
P 9675 1975
F 0 "#PWR0512" H 9675 1725 50 0001 C CNN
F 1 "GNDA" V 9675 1750 50 0000 C CNN
F 2 "" H 9675 1975 60 0000 C CNN
F 3 "" H 9675 1975 60 0000 C CNN
1 9675 1975
0 -1 1 0
$EndComp
Wire Wire Line
9575 1975 9675 1975
Text HLabel 950 2325 0 60 Output ~ 0
RX_FILT
$Comp
L power:GNDA #PWR0513
U 1 1 5E3345CB
P 5575 3700
F 0 "#PWR0513" H 5575 3450 50 0001 C CNN
F 1 "GNDA" H 5575 3550 50 0000 C CNN
F 2 "" H 5575 3700 60 0000 C CNN
F 3 "" H 5575 3700 60 0000 C CNN
1 5575 3700
-1 0 0 -1
$EndComp
Wire Wire Line
5575 4400 5575 4250
Connection ~ 5575 4250
Wire Wire Line
5575 2800 5575 2650
Connection ~ 5575 2650
Text HLabel 3125 4050 0 60 Input ~ 0
TX_IN
Wire Wire Line
3125 4050 3325 4050
Text HLabel 3075 4800 0 60 BiDi ~ 0
TERM
Wire Wire Line
8925 4150 9050 4150
Wire Wire Line
8925 4150 8925 4300
Wire Wire Line
3875 4625 3875 4700
Wire Wire Line
3675 3400 3675 3550
Wire Wire Line
2225 2225 2525 2225
Wire Wire Line
6375 4250 6525 4250
Wire Wire Line
6375 2650 7925 2650
Wire Wire Line
8925 5650 9525 5650
Wire Wire Line
5575 4250 5825 4250
Wire Wire Line
5575 2650 5825 2650
Text Notes 2900 5175 0 100 ~ 0
10dB Directional Coupler
Text Notes 2450 2075 0 100 ~ 0
RF Attenuator - \n6dB was actually installed.
Text Notes 750 3175 0 100 ~ 0
900 MHz U.S. License-Free\nChannel Filter \n(about 3dB Insertion Loss)
Text Notes 700 1675 0 50 ~ 0
Design Note: 10dB directional coupler, 6dB attenuator, and 3dB filter \nreduce reflected signal from antenna by 19dB to protect the SX1257 RX RF input.\nThe absolute maximum rating of the SX1257 RX RF input is +6dBm, so for +30dBm PA\noutput power, the antennas connected to the antenna ports must have S11 < -5dB\nover all operational frequencies.
Wire Notes Line
650 1225 650 1725
Wire Notes Line
650 1725 4175 1725
Wire Notes Line
4175 1725 4175 1225
Wire Notes Line
4175 1225 650 1225
Text Notes 1600 5625 0 50 ~ 0
Design Note: 10dB Directional Coupler multiplexes RX and TX onto the antenna.\nSince RX and TX operate at the same frequencies, TX cancellation in the RX path\nis required to receive signal at any meaningful level.
Wire Notes Line
1550 5325 1550 5700
Wire Notes Line
1550 5700 4850 5700
Wire Notes Line
4850 5700 4850 5325
Wire Notes Line
4850 5325 1550 5325
Text Notes 5275 6550 0 50 ~ 0
Design Note: The SKY13350 Antenna Diversity Switch permits one\nto attach two antennas in different orientations to the reader to \npermit tags reads for all tag orientations and placments around the reader.\n\nCurrently it is recommended that the alternate antennta port (U19) be terminated in a \n50 ohm SMA termination so that the reader can determine if the SX1257\nPLL has gotten itself into a state where (our best guess is) the TX preamplifier\ncan pull on the RX PLL, increasing RX noise.
Wire Notes Line
5225 5850 5225 6625
Wire Notes Line
5225 6625 8725 6625
Wire Notes Line
8725 6625 8725 5850
Wire Notes Line
8725 5850 5225 5850
Text Notes 5350 2225 0 50 ~ 0
Design Note: LEDs on antenna control nets are for debugging purposes.
Wire Notes Line
5325 2100 5325 2300
Wire Notes Line
5325 2300 8175 2300
Wire Notes Line
8175 2100 5325 2100
Wire Notes Line
8175 2100 8175 2300
Text Notes 5125 1625 0 50 ~ 0
Design Note: R64, R65, R95, and R57 realize a method to bypass the SKY13350\nAntenna Diversity Switch.\nOn the original iteration of this design, it was found that distortion due to this switch\nprevented RX reception at high TX output power levels.\nThis is fixed by using a +5V chage pump and level shifters to drive the SKY13350\ncontrol ports.\nThis installable bypass option was put in the schematic to facilitate any further\ndebugging with this switch.
Wire Wire Line
4925 4050 5100 4050
Wire Notes Line
5075 925 5075 1700
Wire Notes Line
5075 1700 8550 1700
Wire Notes Line
8550 1700 8550 925
Wire Notes Line
8550 925 5075 925
Text Notes 700 7675 0 100 ~ 0
Schematic Summary: ANT_ACCESS\nThe antenna access schematic comprises a hodgepodge \nof circuits related to antenna access. From left to right:\n-RX 902-928MHz channel filter\n-RX attenuator (for SX1257 RX protection).\n-Directional coupler (for TX/RX antenna access)\n-Diversity switch LEDs and current-limit resistors.\n-SKY13350 antenna diversity switch.\n-Antenna SMA connectors and ESD protection.\n
Wire Wire Line
5100 1975 5100 4050
Connection ~ 5100 4050
Wire Wire Line
5100 4050 6050 4050
Wire Notes Line
5150 6225 5150 7800
Wire Notes Line
5150 7800 600 7800
Wire Notes Line
600 7800 600 6225
Wire Notes Line
600 6225 5150 6225
Text Notes 7000 4925 0 100 ~ 0
Antenna\nDiversity \nSwitch
Text Notes 9550 3400 0 100 ~ 0
Antenna\nSMA \nConnectors
Wire Wire Line
9050 3200 9050 4150
Connection ~ 9050 4150
Wire Wire Line
9050 4150 9525 4150
Wire Wire Line
8825 1975 9050 1975
Wire Wire Line
9050 2900 9050 1975
Connection ~ 9050 1975
Wire Wire Line
9050 1975 9275 1975
$EndSCHEMATC