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RFIDr_Open_PA.sch
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RFIDr_Open_PA.sch
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EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A 11000 8500
encoding utf-8
Sheet 16 17
Title "RFIDr_Open_PA"
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"
$EndDescr
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Text Notes 9175 2800 2 50 ~ 0
1/4 wave transmission line at 902-928MHz.\n<-------------This provides an open circuit at RF while \nproviding a short circuit at DC to send in bias current.
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$Comp
L Device:C_Small C68
U 1 1 5E320580
P 7150 3600
F 0 "C68" H 7160 3670 50 0000 L CNN
F 1 "12p" H 7160 3520 50 0000 L CNN
F 2 "Capacitors_SMD:C_0402" V 7050 3625 30 0000 C CNN
F 3 "" H 7150 3600 60 0000 C CNN
1 7150 3600
1 0 0 1
$EndComp
$Comp
L power:GNDA #PWR0479
U 1 1 5E320587
P 7875 3775
F 0 "#PWR0479" H 7875 3525 50 0001 C CNN
F 1 "GNDA" H 7875 3600 50 0000 C CNN
F 2 "" H 7875 3775 60 0000 C CNN
F 3 "" H 7875 3775 60 0000 C CNN
1 7875 3775
-1 0 0 -1
$EndComp
$Comp
L power:GNDA #PWR0480
U 1 1 5E32058D
P 7150 3775
F 0 "#PWR0480" H 7150 3525 50 0001 C CNN
F 1 "GNDA" H 7150 3600 50 0000 C CNN
F 2 "" H 7150 3775 60 0000 C CNN
F 3 "" H 7150 3775 60 0000 C CNN
1 7150 3775
-1 0 0 -1
$EndComp
$Comp
L RFIDr_Open_Lib:HHM22106 U21
U 1 1 5E32225B
P 9200 3525
F 0 "U21" H 9450 3225 60 0000 C CNN
F 1 "HHM22106" H 9425 3600 60 0000 C CNN
F 2 "RFIDr_Open:HHM22106" H 9475 3150 30 0000 C CNN
F 3 "" H 9200 3525 60 0000 C CNN
1 9200 3525
0 -1 1 0
$EndComp
$Comp
L power:GNDA #PWR0481
U 1 1 5E322262
P 9325 3225
F 0 "#PWR0481" H 9325 2975 50 0001 C CNN
F 1 "GNDA" V 9325 3000 50 0000 C CNN
F 2 "" H 9325 3225 60 0000 C CNN
F 3 "" H 9325 3225 60 0000 C CNN
1 9325 3225
1 0 0 1
$EndComp
$Comp
L Device:R R66
U 1 1 5E322268
P 9400 5025
F 0 "R66" V 9480 5025 50 0000 C CNN
F 1 "50" V 9400 5025 50 0000 C CNN
F 2 "Resistors_SMD:R_0402" V 9525 5000 30 0000 C CNN
F 3 "" H 9400 5025 30 0000 C CNN
1 9400 5025
1 0 0 1
$EndComp
$Comp
L power:GNDA #PWR0482
U 1 1 5E32226F
P 9400 5225
F 0 "#PWR0482" H 9400 4975 50 0001 C CNN
F 1 "GNDA" H 9400 5075 50 0000 C CNN
F 2 "" H 9400 5225 60 0000 C CNN
F 3 "" H 9400 5225 60 0000 C CNN
1 9400 5225
-1 0 0 -1
$EndComp
$Comp
L power:GNDA #PWR0483
U 1 1 5E322275
P 9325 4250
F 0 "#PWR0483" H 9325 4000 50 0001 C CNN
F 1 "GNDA" V 9325 4025 50 0000 C CNN
F 2 "" H 9325 4250 60 0000 C CNN
F 3 "" H 9325 4250 60 0000 C CNN
1 9325 4250
-1 0 0 -1
$EndComp
$Comp
L RFIDr_Open_Lib:MAX2204 U24
U 1 1 5E32227B
P 8600 5775
F 0 "U24" H 8825 5450 60 0000 C CNN
F 1 "MAX2204" H 8825 5825 60 0000 C CNN
F 2 "RFIDr_Open:SC-70-5" H 8825 5900 30 0000 C CNN
F 3 "" H 8600 5775 60 0000 C CNN
1 8600 5775
1 0 0 -1
$EndComp
$Comp
L power:VAA #PWR0484
U 1 1 5E322282
P 7750 5750
F 0 "#PWR0484" H 7750 5600 50 0001 C CNN
F 1 "VAA" V 7750 5925 50 0000 C CNN
F 2 "" H 7750 5750 60 0000 C CNN
F 3 "" H 7750 5750 60 0000 C CNN
1 7750 5750
1 0 0 -1
$EndComp
$Comp
L Device:C_Small C62
U 1 1 5E322288
P 7750 6000
F 0 "C62" H 7760 6070 50 0000 L CNN
F 1 "100n" H 7760 5920 50 0000 L CNN
F 2 "Capacitors_SMD:C_0402" V 7650 6025 30 0000 C CNN
F 3 "" H 7750 6000 60 0000 C CNN
1 7750 6000
1 0 0 -1
$EndComp
$Comp
L power:GNDA #PWR0485
U 1 1 5E32228F
P 8325 5900
F 0 "#PWR0485" H 8325 5650 50 0001 C CNN
F 1 "GNDA" V 8325 5675 50 0000 C CNN
F 2 "" H 8325 5900 60 0000 C CNN
F 3 "" H 8325 5900 60 0000 C CNN
1 8325 5900
0 1 1 0
$EndComp
$Comp
L Device:C_Small C63
U 1 1 5E322295
P 8800 4625
F 0 "C63" V 8850 4700 50 0000 L CNN
F 1 "100p" V 8850 4375 50 0000 L CNN
F 2 "Capacitors_SMD:C_0402" V 8700 4650 30 0000 C CNN
F 3 "" H 8800 4625 60 0000 C CNN
1 8800 4625
0 1 1 0
$EndComp
$Comp
L Device:R R67
U 1 1 5E32229C
P 9150 5025
F 0 "R67" V 9230 5025 50 0000 C CNN
F 1 "50" V 9150 5025 50 0000 C CNN
F 2 "Resistors_SMD:R_0402" V 9275 5000 30 0000 C CNN
F 3 "" H 9150 5025 30 0000 C CNN
1 9150 5025
1 0 0 1
$EndComp
$Comp
L power:GNDA #PWR0486
U 1 1 5E3222A3
P 9150 5225
F 0 "#PWR0486" H 9150 4975 50 0001 C CNN
F 1 "GNDA" H 9150 5075 50 0000 C CNN
F 2 "" H 9150 5225 60 0000 C CNN
F 3 "" H 9150 5225 60 0000 C CNN
1 9150 5225
-1 0 0 -1
$EndComp
Text HLabel 9300 5975 2 60 Input ~ 0
EN_RSSI
$Comp
L Device:C_Small C67
U 1 1 5E3222AA
P 9850 6150
F 0 "C67" H 9860 6220 50 0000 L CNN
F 1 "100n" H 9860 6070 50 0000 L CNN
F 2 "Capacitors_SMD:C_0402" V 9750 6175 30 0000 C CNN
F 3 "" H 9850 6150 60 0000 C CNN
1 9850 6150
-1 0 0 1
$EndComp
$Comp
L power:GNDA #PWR0487
U 1 1 5E3222B1
P 9850 6325
F 0 "#PWR0487" H 9850 6075 50 0001 C CNN
F 1 "GNDA" H 9850 6175 50 0000 C CNN
F 2 "" H 9850 6325 60 0000 C CNN
F 3 "" H 9850 6325 60 0000 C CNN
1 9850 6325
1 0 0 -1
$EndComp
Text HLabel 9925 3300 2 60 Output ~ 0
PA_OUT
Text HLabel 975 2550 0 60 Input ~ 0
PA_IN
$Comp
L power:GNDA #PWR0488
U 1 1 5E31181C
P 3775 3300
F 0 "#PWR0488" H 3775 3050 50 0001 C CNN
F 1 "GNDA" V 3775 3075 50 0000 C CNN
F 2 "" H 3775 3300 60 0000 C CNN
F 3 "" H 3775 3300 60 0000 C CNN
1 3775 3300
0 1 -1 0
$EndComp
Wire Wire Line
3850 3300 3775 3300
Wire Wire Line
5725 3600 5500 3600
Wire Wire Line
5500 3400 5725 3400
Connection ~ 5725 3400
Wire Wire Line
5725 3500 5500 3500
Connection ~ 5725 3500
Wire Wire Line
7200 1825 7200 2125
Wire Wire Line
8250 1825 8250 2125
Wire Wire Line
7900 2125 7900 1825
Connection ~ 7900 2125
Wire Wire Line
7550 2125 7550 1825
Connection ~ 7550 2125
Wire Wire Line
4700 4050 4700 3950
Wire Wire Line
5050 4500 5050 4250
Wire Wire Line
4600 4250 5050 4250
Wire Wire Line
5400 4150 5400 4250
Connection ~ 5050 4250
Connection ~ 5400 4250
Wire Wire Line
5400 4700 5400 5000
Wire Wire Line
5050 4700 5050 5000
Wire Wire Line
4400 4050 4400 3950
Wire Wire Line
3725 5100 3800 5100
Wire Wire Line
3800 5100 3800 5400
Connection ~ 3800 5100
Wire Wire Line
3200 5100 3350 5100
Wire Wire Line
3350 5100 3350 5400
Wire Wire Line
3350 5600 3350 5850
Wire Wire Line
3350 5850 3800 5850
Wire Wire Line
3800 5850 3800 5600
Connection ~ 3350 5100
Wire Wire Line
3725 4050 3800 4050
Wire Wire Line
3250 4050 3350 4050
Wire Wire Line
3350 4050 3350 4300
Wire Wire Line
3350 4500 3350 4750
Wire Wire Line
3350 4750 3800 4750
Wire Wire Line
3800 4750 3800 4500
Connection ~ 3350 4050
Wire Wire Line
3800 4300 3800 4050
Connection ~ 3800 4050
Wire Wire Line
2650 3800 2650 3600
Wire Wire Line
2350 3600 2650 3600
Wire Wire Line
2650 4200 2650 4000
Wire Wire Line
3350 3400 3850 3400
Wire Wire Line
1725 2550 2650 2550
Wire Wire Line
975 2550 1125 2550
Wire Wire Line
825 3600 1175 3600
Wire Wire Line
825 3500 825 3600
Connection ~ 825 3600
Wire Wire Line
825 4200 825 4000
Wire Wire Line
1175 3800 1175 3600
Connection ~ 1175 3600
Wire Wire Line
1175 4200 1175 4000
Connection ~ 1175 4200
Wire Wire Line
1525 4200 1525 4000
Connection ~ 1525 4200
Wire Wire Line
1525 3800 1525 3600
Connection ~ 1525 3600
Wire Wire Line
5600 1125 5600 1350
Connection ~ 5600 1350
Wire Wire Line
5600 2150 5600 1925
Wire Wire Line
5400 2150 5600 2150
Connection ~ 3350 4750
Connection ~ 3350 5850
Wire Wire Line
1375 4200 1375 4250
Connection ~ 1375 4200
Wire Wire Line
825 4200 1175 4200
Wire Wire Line
3775 3500 3850 3500
Wire Wire Line
4300 2875 4300 2950
Wire Wire Line
5600 1350 5725 1350
Wire Wire Line
5600 775 5600 825
Wire Wire Line
7875 3300 7875 3500
Connection ~ 7875 3300
Wire Wire Line
7150 3300 7150 3500
Connection ~ 7150 3300
Wire Wire Line
7875 3775 7875 3700
Wire Wire Line
7150 3775 7150 3700
Wire Wire Line
9250 3300 8275 3300
Wire Wire Line
9325 3225 9325 3325
Wire Wire Line
9400 4200 9400 4875
Wire Wire Line
9325 4200 9325 4250
Wire Wire Line
9400 5175 9400 5225
Wire Wire Line
7750 5750 7750 5825
Wire Wire Line
7750 5825 8400 5825
Wire Wire Line
9250 4200 9250 4300
Wire Wire Line
9250 4300 9150 4300
Wire Wire Line
9150 4300 9150 4625
Wire Wire Line
9150 5175 9150 5225
Wire Wire Line
9225 5825 9850 5825
Wire Wire Line
9225 5975 9300 5975
Wire Wire Line
9850 6050 9850 5825
Connection ~ 9850 5825
Wire Wire Line
9850 6325 9850 6250
Wire Wire Line
9250 3325 9250 3300
Wire Wire Line
9400 3325 9400 3300
Wire Wire Line
9400 3300 9925 3300
Connection ~ 5725 3300
Wire Wire Line
2650 2750 2650 2550
Connection ~ 2650 2550
Wire Wire Line
2650 3050 2650 2950
Wire Wire Line
3350 3400 3350 2550
Wire Wire Line
3350 2550 3100 2550
Connection ~ 2650 3600
Wire Wire Line
5500 3300 5725 3300
Wire Notes Line
7600 3225 7450 3225
Wire Notes Line
7450 3375 7600 3375
Wire Notes Line
7450 3225 7450 3375
Wire Notes Line
7600 3375 7600 3225
Wire Wire Line
8325 5900 8400 5900
$Comp
L power:GNDA #PWR0489
U 1 1 5E31663C
P 7750 6200
F 0 "#PWR0489" H 7750 5950 50 0001 C CNN
F 1 "GNDA" H 7750 6050 50 0000 C CNN
F 2 "" H 7750 6200 60 0000 C CNN
F 3 "" H 7750 6200 60 0000 C CNN
1 7750 6200
1 0 0 -1
$EndComp
Wire Wire Line
7750 6100 7750 6200
Connection ~ 7750 5825
Wire Wire Line
8900 4625 9150 4625
Connection ~ 9150 4625
Wire Wire Line
7500 4625 7500 6575
Wire Wire Line
8200 6575 8200 5975
Wire Wire Line
8200 5975 8400 5975
$Comp
L power:GNDA #PWR0490
U 1 1 5E317E04
P 4600 2875
F 0 "#PWR0490" H 4600 2625 50 0001 C CNN
F 1 "GNDA" V 4600 2650 50 0000 C CNN
F 2 "" H 4600 2875 60 0000 C CNN
F 3 "" H 4600 2875 60 0000 C CNN
1 4600 2875
1 0 0 1
$EndComp
Wire Wire Line
4600 2875 4600 2950
Wire Wire Line
5725 3300 5725 3400
Wire Wire Line
6150 1350 6425 1350
Connection ~ 6425 1350
Wire Wire Line
7200 2125 7550 2125
Wire Wire Line
7200 1350 7200 1625
Wire Wire Line
8250 1350 8250 1625
Connection ~ 7200 1350
Wire Wire Line
7550 1625 7550 1350
Connection ~ 7550 1350
Wire Wire Line
7900 1625 7900 1350
Connection ~ 7900 1350
Connection ~ 8250 2125
Connection ~ 5600 2150
Wire Wire Line
5950 2150 5950 1550
Wire Wire Line
4500 5100 4500 3950
$Comp
L power:GNDA #PWR0491
U 1 1 5E32045E
P 5400 5050
F 0 "#PWR0491" H 5400 4800 50 0001 C CNN
F 1 "GNDA" H 5400 4900 50 0000 C CNN
F 2 "" H 5400 5050 60 0000 C CNN
F 3 "" H 5400 5050 60 0000 C CNN
1 5400 5050
1 0 0 -1
$EndComp
Wire Wire Line
4600 3950 4600 4250
Wire Wire Line
5050 5000 5400 5000
Connection ~ 5400 5000
Wire Wire Line
5725 3400 5725 3500
Wire Wire Line
5725 3500 5725 3600
Wire Wire Line
7900 2125 8250 2125
Wire Wire Line
7550 2125 7900 2125
Wire Wire Line
5050 4250 5400 4250
Wire Wire Line
5400 4250 5400 4500
Wire Wire Line
3800 5100 4500 5100
Wire Wire Line
3350 5100 3425 5100
Wire Wire Line
3350 4050 3425 4050
Wire Wire Line
3800 4050 4400 4050
Wire Wire Line
825 3600 825 3800
Wire Wire Line
1175 3600 1525 3600
Wire Wire Line
1175 4200 1375 4200
Wire Wire Line
1525 4200 2650 4200
Wire Wire Line
1525 3600 1750 3600
Wire Wire Line
5600 1350 5600 1625
Wire Wire Line
3350 4750 3350 4800
Wire Wire Line
3350 5850 3350 5900
Wire Wire Line
1375 4200 1525 4200
Wire Wire Line
7875 3300 8075 3300
Wire Wire Line
7150 3300 7875 3300
Wire Wire Line
9850 5825 10000 5825
Wire Wire Line
2650 2550 2900 2550
Wire Wire Line
2650 3600 3850 3600
Wire Wire Line
7750 5825 7750 5900
Wire Wire Line
9150 4625 9150 4875
Wire Wire Line
6425 1350 7200 1350
Wire Wire Line
7200 1350 7550 1350
Wire Wire Line
7550 1350 7900 1350
Wire Wire Line
7900 1350 8250 1350
Wire Wire Line
8250 2125 8250 2200
Wire Wire Line
5600 2150 5950 2150
Wire Wire Line
5400 5000 5400 5050
Text Notes 700 6450 0 50 ~ 0
Design Note: The design for the SKY65111 PA was taken straight out of its data sheet,\nincluding the layout since at the time we did not have EM simulation software.\n\n
Text Notes 6500 4350 0 50 ~ 0
T-Line realizes inductor in low loss pi-matching network.\nHaving a real inductor here would be a problem from\na loss and radiation standpoint.
Text Notes 7450 4000 0 50 ~ 0
/|\\n |\n |\n |\n |\n |\n |
Wire Notes Line
650 6150 650 6450
Wire Notes Line
650 6450 4125 6450
Wire Notes Line
4125 6450 4125 6150
Wire Notes Line
4125 6150 650 6150
Text Notes 4275 6475 0 50 ~ 0
Design Note: HHM22106 is a directional coupler and MAX2204 is a power\nsensor. The RSSI OUT signal is sent back to the ADC onboard the MCU.\nThis feature has not been tested; it was installed as a back-up option\nfor a feedback sensor to drive the reflected power canceller TX cancellation\nalgorithm. This feature could also potentially be used to sense output power\nlevels in excess of regulatory requirements, although it is anticipated that\nsuch usage is not necessary.
Wire Notes Line
4225 5850 4225 6525