4-30
100pF
C386
Q310
1
3
2
NU
R331
C372
R330
C371
NU
NU
NU
NU
2
1
R335
RT301
R338
C391
6.8K
R325
R5
NU
NU
NU
NU
VR300
R326
Q316
1
3
2
R334
NU
NU
NU
NU
33.0K
RT300
2
1
1
3
2
Q315
R319
150
R318
18K
R327
33K
C333
R336
R5
NU
NU
R316
91K
C396
NU
C397
1uF
2.2K
R300
RSSI
RX_INJ
100pF
C370
0
R339
R332
NU
100pF
C374
R333
0
R349
L321
C373
NU
NU
NU
C378
NU
100pF
C375
16.28nH
L309
C320
C319
7.5pF
3.6pF
2
T302
XFMR
4
6
3
1
C381
4.7pF
TP302
3.6K
R348
R5
7.5pF
C318
11pF
C317
R329
0
CR305
CR304
100K
R307
R306
100K
L306
11.03nH
L307
11.03nH
C316
4.3pF
C313
11pF
C311
12nH
L305
4.3pF
C312
C306
NU
2pF
R303
4.3K
C310
0.1uF
Q301
1
3
2
R340
8.2K
2.7
R328
C314
0.1uF
470
12K
R305
C309
100pF
R304
180nH
L304
100pF
C321
100pF
C315
R5
R342
100K
C380
.01uF
DACRx
2
XFMR
T301
4
6
3
1
0
R309
270
47
R310
R308
CR306
3
4
IF
2
1
82pF
C322
L310
150nH
R317
1K
2
3
CR308
HSMP3820
1
100pF
C331
C395
100pF
L340
390nH
R347
1K
R5
C301
13pF
RX_IN
CR301
11.03nH
L301
C302
12pF
CR302
R302
100K
R301
100K
4.3pF
C303
100pF
C308
C305
8.2pF
L302
11.03nH
C304
11pF
CR303
2
3
1
22nH
L303
C307
0.1uF
SHIELD
SH301
1
RXFE Top Shield
SH302
1
SHIELD
1
SH304
SHIELD
RXFE Bottom Shield
RX Mixer Diod Shield
SH303
SHIELD
1
Mixer Shield
VCOBUF
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4.398V
0.508V
1.850V@-50dBm
ZMY0130410-O
Figure 4-26. UHF (450-527 MHz) Receiver Front End Schematic Diagram