RS9110-N-11-03
Module Integration Guide
Version 3.0
November, 2012
Redpine Signals, Inc.
2107 N. First Street, #680
San Jose, CA 95131.
Tel: (408) 748-3385
Fax: (408) 705-2019
Email: info@redpinesignals.com
Website: www.redpinesignals.com
Redpine Signals, Inc. Proprietary and Confidential
RS9110-N-11-03
Module Integration Guide
Version 3.0
About this Document
The RS9110-N-11-03 is a dual-band 802.11n single-stream module with built-in
MAC/BBP, RF and PA, and front-end components. It interfaces to a host processor
through an SDIO or SPI interface. This document provides information that may be
used while integrating the module into an end solution.
Redpine Signals Inc. Proprietary and Confidential
Page 2
RS9110-N-11-03
Module Integration Guide
Version 3.0
Table Of Contents
1 Reference Schematics .......................................................... 5
1.1
1.2
SDIO Interface Integration ................................................. 5
SPI Interface Integration.................................................... 7
2.1
2.2
SDIO Interface ................................................................... 9
SPI Interface .....................................................................10
2 Bill of Materials .................................................................... 9
3 Recommended RS9110-N-11-03 PCB Landing Pattern ....... 13
4 Circuit and Layout Guidelines ............................................ 14
5 Chip Antenna Layout Recommendations ............................ 15
5.1
Antenna Matching Network ................................................16
6 Reference Oscillator Specifications .................................... 18
6.1
List of Recommended Crystal Oscillators ............................19
7 Recommended Specifications for Schottky Diode .............. 20
7.1
Recommended Parts ..........................................................20
8.1
8.2
8.3
8.4
8.5
Top Layer ..........................................................................21
Layer 2 ..............................................................................21
Layer 3 ..............................................................................22
Bottom Layer .....................................................................22
Component Placement .......................................................22
8 Sample Layout ................................................................... 21
Redpine Signals Inc. Proprietary and Confidential
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Redpine Signals, Inc. Proprietary and Confidential
RS9110-N-11-03
Module Integration Guide
Version 3.0
1 Reference Schematics
The following is a reference circuit schematic of an Evaluation Board using the RS9110- N-11-03 WLAN module.
The schematics show both SDIO and SPI host interface options. The layout corresponding to this schematic is
also shown in this document as a reference.
1.1 SDIO Interface Integration
NOTE::
Default : Mount FB1 & Do Not Mount FB6.
If VDD_EXT is used
Mount FB6 & Do Not Mount FB1.
Reference Clock Circuitry
VRF33
2
D2
PSPI_CSN
1PSPI_MISO
PSPI_MOSI
PSPI_CLK
CMS02
U1
GND
1
OE
XTAL_EN
FB1
UART2_IN
CLK_REF
RESET_n
LED _ON
CLK_REF
R1
33E
3
OUT
4
VDD
2
2
1
1
VRF28
1
VDD_EXT
BEAD
C1
2.2uF
7C40000192
Make:: TXC
45
U2
44
43
42
41
40
39
38
37
36
35
34
33
32
31
FB6(N P)
2
30
2
1
BEAD
GND REF_C
RESET_N
LK LED _ON
UART2_IN
VRF33VRF33
PSPI_CLK
FBDC1P3
VOUTNC
BCKDC
GND
1P3
VIN LDOP123
PSPI_CSN
PSPI_MOSI
1PSPI_MISO
46
GND
47
48
49
VRF28
SLEEP_CLK_X2
SLEEP_CLK_X1
LDO28
MODE_SEL_1
MODE_SEL_0
SLEEP_CLK_X2
SLEEP_CLK_X1
52
53
XTAL_EN _IP
54
HOST _WAKEU P_INT
55
SDIO_D ATA0
56
SDIO_D ATA1
57
SDIO_C LK
GND
PSPI_CSN 0
50
51
GPIO_1
RF Out Circuitry
GND
GND
RF_OUT 1
RS9110-N-11-03 Pin Diagram
GPIO_1
XTAL_IP_EN
RF_OUT 2
VINBC KDC
HOST _WAKEU P_INT
XTAL_EN
802.11abgn WLAN Module
SDIO_D ATA0/SPI_M OSI
BT_ACTIVE
SDIO_D ATA1/SPI_MISO
58
BT_PRIORIT Y
SDIO_C LK/SPI_CLK
WLAN _ACT IVE
SDIO_D ATA2/SPI_INTR
SLEEP_CLK_IN
SDIO_CMD/SPI_C S
SDIO_D ATA3/SD3
NC
DVDD33
UART2_OU
UART1_OU
T
T
UART1_RT
UART1_CT
S
S
UART1_IN
GND
1
2
4
5
6
7
8
9
10
11
12
13
UART1_CT
S
SDIO_D
SDIO_D
ATA2 ATA3
UART2_OU
T
UART1_OU
T
UART1_RT S
SDIO_CMD
UART1_IN
R3 R4
R5
TDO
1K
1K
Mating Connector Part No::MXHS83QH3000
Microwave coaxial
connector with switch
PSPI_CSN 0
28
27
ANT1
Z1
TBD
26
4
25
R9
51E
C2
8.2pF
24
VMOD
23
XTAL_EN
22
BT_ACTIVE
21
BT_PRIORIT Y
20
WLAN _ACT IVE
C3
0.1uF
1
J1
6 5
Z3
TBD
2 1
DVDD33
ANT1
ANT2
2
Z2
TBD
Place Z1-Z3 Close together
and near to ANT1
Tuning Network
50 Ohm RF line
NC
17
3
C4
10uF
19
18
ANTOUT
ANTIN
GND
GND GND
GND
Microwave switch is used for evaluating
the standalone Transmit/Receive
performance of the WLAN module by
providing direct connectivity to Signal
generator/Analyzer through RF cable
Z1 , Z2, Z3 form the tuning network for
matching the impedance of the Antenna.
The values depend upon the layout. In
case tuning network is not implemented Z1
should be placed as 8.2pF as default
I2C _SD
A _SC L
I2C
GND
TCK TMS TDI TDO
3
MM8430-2610RA1
29
14
15
16
I2C _SD
I2CA_SC L
SPI Serial Flash
1K
U3
PSPI_MISO
PSPI_MOSI
PSPI_CLK
PSPI_CSN 1
RESET Circuitry
SDIO Interface Connector
RESET_n
SDIO_DATA3
SDIO_CLK
SDIO_DATA0
SDIO_DATA2
1
3
5
7
9
R31**
CD/DAT 3
VSS1
CLK
DAT0
DAT2
J3
CMD
VDD
VSS2
DAT1
2
4
6
8
R6
100K
2
5
6
1
SO
SI
SCK
CE#
VSS
WP#
HOLD
VDD
4
3
7
8
VDD_EXT
SST25VF016B-75-4I-QAF-T
R8
4.7K
VIN33
C8
0.1uF
C6
0.1uF
SDIO_CMD
VIN33
VDD_EXT
SDIO_DATA1
C7
10uF
OPTIONAL
LED Indication
Note:
D1
R31** value sh ould b e adjust ed b ased
on driver output imp edan ce and PCB
Trace Imp ed ance,,(33E is Nom inal)
LED _ON
820E
R7
LED
VDD_EXT
Power Supply Filter Section
FB2
2
2
FB3
1
1
VDD_EXT
BEAD
VIN33
FB4
2
2
BEAD
2
2
1
1
VRF33
BEAD
C9
1uF
C11
C10
100uF(CASE B)
Tantal um
VMOD
L1
1
FB5
1
2
4.7uH
C12
0.1uF
C14
C13
100uF(CASE B)
Tantal um
0.1uF
0.1uF
2
1
BEAD
1
DVDD33
C15
10uF
NOTE::If required C10 can be increased further to
check if the Transmit EVM is getting better.
Rev7.0
Ver7.0
As a second option shorting the Bead FB3
can also be tried for improving the Transmit EVM.
Title
Redpine Signals Confidential
RS9110-N-11-03 SDIO - Reference Schematics
Size
Document N umber
Custom
Date:
Tuesday, October 30, 2012
Rev
Sheet
2
of
2
Figure 1 SDIO Interface Integration
Redpine Signals Inc. Proprietary and Confidential
Page 5
RS9110-N-11-03
Module Integration Guide
Version 3.0
NOTE: Pull up resistors should be present on SDIO_CMD & SDIO_Data lines according to the section 6.6.5 of SD
physical layer specification, version 2.00
Redpine Signals Inc. Proprietary and Confidential
Page 6
RS9110-N-11-03
Module Integration Guide
Version 3.0
1.2 SPI Interface Integration
NOTE::
Default : Mount FB1 & Do Not Mount FB6.
If VDD_EXT is used
Mount FB6 & Do Not Mount FB1.
Reference Clock Circuitry
FROM HOST
VRF33
VOUTBCKDC1P3
U1
PSPI_CSN1
PSPI_MOSI
PSPI_MISO
PSPI_CLK
D2
CMS02
2
RESET_nUART2_IN
CLK_REF
LED_ON
GND
OE
OUT
VDD
1
R1
33E
3
4
7C40000192
U2
46
47
48
49
VRF28
3.9K to 4.75K
R2
SLEEP_CLK_X2 50
SLEEP_CLK_X1 51
52
GPIO_1
53
XTAL_EN_IP
54
HOST_WAKEUP_INT 55
SPI_MOSI
56
SPI_MISO
57
SPI_CLK
58
XTAL_EN
FB1
CLK_REF
C1
2.2uF
Make:: TXC
45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30
2
2 1
BEAD
1
VRF28
1
VDD_EXT
FB6(NP)
2
VOUTBCKDC1P3
VINLDOP123
PSPI_MOSI
PSPI_MISO
PSPI_CSN1
PSPI_CLK
RESET_N
LED_ON
UART2_IN
FBDC1P3
VRF33
VRF33
GNDREF_CLK
NC GND
2 1
BEAD
RF Out Circuitry
GND
LDO28
MODE_SEL_1
MODE_SEL_0
GND
PSPI_CSN0
SLEEP_CLK_X2
SLEEP_CLK_X1
GND
RS9110-N-11-03 Pin Diagram
GND
RF_OUT1
GPIO_1
RF_OUT2
XTAL_IP_EN
802.11abgn WLAN ModuleVINBCKDC
HOST_WAKEUP_INT
XTAL_EN
SDIO_DATA0/SPI_MOSI
BT_ACTIVE
SDIO_DATA1/SPI_MISO
BT_PRIORITY
SDIO_CLK/SPI_CLK
SDIO_DATA2/SPI_INTR
WLAN_ACTIVE
SLEEP_CLK_IN
SDIO_CMD/SPI_CS
SDIO_DATA3/SD3
DVDD33
UART2_OUT
UART1_OUT
UART1_RTS
UART1_CTS
UART1_IN
1
2
3
4
5
6
7
8
9
ANT1
Z3
TBD
26
4
25
R9
51E
C2
8.2pF
24
ANTOUT
ANTIN
GND
GNDGND
GND
6 5
VMOD
23
XTAL_EN
22
C3
BT_ACTIVE 0.1uF
21
BT_PRIORITY
20
WLAN_ACTIVE
1
Z1
TBD
2 1
Z2
TBD
C4
10uF
50 Ohm RF line
NC
ANT1
ANT2
2
Place Z1-Z3 Close together
and near to ANT1
Tuning Network
Microwave switch is used for evaluating
the standalone Transmit/Receive
performance of the WLAN module by
providing direct connectivity to Signal
generator/Analyzer through RF cable
19
17
3
J1
Z1 , Z2, Z3 form the tuning network for
matching the impedance of the Antenna.
The values depend upon the layout. In
case tuning network is not implemented Z1
should be placed as 8.2pF as default
DVDD33
GND
10 11 12 13 14 15 16
UART1_CTS
UART2_OUT
I2C_SDA
UART1_OUT
I2C_SCL
UART1_RTS
UART1_IN
SPI_INTR
R3 R4 R5 TDO
SPI_CS
SD3
Mating Connector Part No::MXHS83QH3000
27
I2C_SDA
I2C_SCL
TCK TMSTDI TDO
GND
Microwave coaxial
connector with switch
PSPI_CSN0
28
18
NC
MM8430-2610RA1
29
SPI Serial Flash
1K 1K 1K
U3
SPI Interface Connector
RESET Circuitry OPTIONAL
RESET_n
SD3
SPI_CLK
SPI_MOSI
SPI_INTR
1
3
5
7
9
R31**
2
CD/DAT3 CMD 4
VSS1
VDD 6
CLK
VSS2 8
DAT0
DAT1
DAT2J3
PSPI_MISO
PSPI_MOSI
PSPI_CLK
PSPI_CSN1
R6
100K
VIN33
SPI_MISO
SO
VSS
SI
WP#
SCK HOLD
CE# VDD
4
3
7
8
VDD_EXT
SST25VF016B-75-4I-QAF-T
VIN33
C6
0.1uF
SPI_CS
2
5
6
1
C8
0.1uF
R8
4.7K
For DEBUG Purpose
C7
10uF
VDD_EXT
LED Indication
Note:
D1
LED_ONLED
R31** value should be adjusted based
on driver output impedance and PCB
Trace Impedance,,(33E is Nominal)
820E
R7
OPTIONAL
VDD_EXT
Power Supply Filter Section
2
FB2
2 1
BEAD
1
C9
1uF
VIN33
FB4
2
2 1
BEAD
2
VDD_EXT
FB3
1
2 1
BEAD
VMOD
L1
1
2
4.7uH
C12
0.1uF
VRF33
C11
C10
100uF(CASE B)
Tantalum
C14
C13
100uF(CASE B)
Tantalum
0.1uF
FB5
1
2 1
BEAD
0.1uF
DVDD33
C15
10uF
NOTE::If required C10 can be increased further to
check if the Transmit EVM is getting better.
As a second option shorting the Bead FB3
can also be tried for improving the Transmit EVM.
Redpine Signals Confidential
Rev7.0
Ver7.0
Title
RS9110-N-11-03 SPI- Reference Schematics
Size
Document Number
Custom
Date:
Tuesday, October 30, 2012
Rev
Sheet
2
of
2
Figure 2 SPI Interface Integration
Redpine Signals Inc. Proprietary and Confidential
Page 7
RS9110-N-11-03
Module Integration Guide
Version 3.0
NOTE on SPI_CS and SPI_CLK: Based on the Host SPI configuration, during BOOT UP, SPI Master could be
coming up as GPIO pins. In the wake of this possibility, it may be needed to add a pull up on the SPI_CS and a
pull up (CPOL=1)/pull down (CPOL=0) on the SPI_CLK. The value of pull up/ pull down resistor should follow the
recommendations as given on the HOST side.
However, a WLAN application that uses the RS9110-N-11-03 module may differ in the following:
1. Antenna connection:
The ‘microwave coaxial connector with switch’ shown would not be required.
The RF_OUT1 (Module Pin No. 26) signals may be directly connected to an on-board chip antenna, or may be
terminated in an SMA connector of any form factor for enabling the use of external antennas.
The RF-OUT2 (Module Pin No. 25) is terminated through 50ohms precision resistor (1% Tolerance) to ground.
2. The LED is optional.
Redpine Signals Inc. Proprietary and Confidential
Page 8
RS9110-N-11-03
Module Integration Guide
Version 3.0
2 Bill of Materials
2.1 SDIO Interface
Item Qty
Reference
Value
Description
Jedec
Mfg
Part No
CAPACITORS
1
1
C2
8.2pF
CER CHP C 8.2P +-0.25P C0G 0402 25V LF
0402
Murata
GRM1555C1H8R2CZ01D
2
5
C3,C6,C11,C12,C14
0.1uF
CER CHIP C 0.1U 10% X5R 0402 6.3V
0402
Murata
GRM155R61A104KA01D
3
1
C9
1uF
CAP CER 1.0UF 16V 10% X7R 0805
0805
4
1
C1
2.2uF
CER CHIP C 2.2U 20% X5R 0402 4V
0402
Murata
GRM155R60G225ME15D
5
3
C4,C7,C15
10uF
CER CHIP C 10U 20% X5R 0805 10V
0805
Murata
GRM21BR61A106KE19L
6
2
C10,C13
CASE-B
Kemet
B45196H2476M209
7
2
R1,R31**
33E
CHIP RES 33R 5% 200PPM 0402 1/10W
0402
Panasonic
ERJ-2GEJ330X
8
1
R9
51E
RES 51.0 OHM 1/10W 1% (0402)
0402
Panasonic
ERJ-2GE J510X
820E
CHIP RES 820R 5% 200PPM 0402 1/10W
0402
Panasonic
ERJ-2GEJ821X
RES 1.0K OHM 1/16W 5% 0402 SMD
0402
Yageo
RC0402JR-071KL
100K
CHIP RES 100K 5% 200PPM 0402 1/10W
0402
Panasonic
ERJ-2GEJ104X
100uF
CER CHIP C 47U 20% 10V CASE B
Murata
GRM21BR71C105KA01L
RESISTORS
9
1
R7
10
3
R3,R4,R5
11
1
R6
12
1
L1
4.7uH
Power Inductor
2520
FDK
MIPF2520D4R7
13
5
FB1,FB2,FB3,FB4,FB5
BEAD
Beads
0805
Murata
BLM21PG221SN
14
1
D1
LED
LED
0603
Lite-On Inc
LTST-C190KGKT
15
1
D2
CMS02
Schottky Diode
SMD
Toshiba
CMS02TE12L,Q
16
3
Z1,Z2,Z3
Refer to the description in the schematic.
Sample part number for Z1 given here.
Murata
GRM1555C1H8R2CZ01D
17
18
19
1
1
1
U1
U2
ANT1
40MHz Crystal Oscillator
RS9110-N-11-03 802.11abgn WLAN Module
2.45GHz &5GHz SMD Antenna
TXC
Redpine
RAINSUN
7C40000192
RS9110-N-11-03
AN1003
1K
INDUCTORS
Diodes
ANTENNA TUNING NETWORK
TBD
IC'S
Antenna
Redpine Signals Inc. Proprietary and Confidential
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RS9110-N-11-03
Module Integration Guide
Version 3.0
20
2
J1
Microwave Coaxial Connector with switch
Murata
21
1
J3
5X2 Box Header
Burg Header
MM8430-2610RA1
22
1
C8
0.1uF
CER CHIP C 0.1U 10% X5R 0402 6.3V
0402
Murata
GRM155R61A104KA01D
23
1
R8
4.7K
CHIP RES 4K7 5% 200PPM 0402 1/10W
0402
Panasonic
ERJ-2GEJ472X
24
1
U3
SST
SST25VF016B-75-4I-QAF-T
25
1
FB6
Murata
BLM21PG221SN
No Populate
16MBIT Serial Flash
BEAD
Beads
WSON
0805
2.2 SPI Interface
Item Qty
Reference
Value
Description
Jedec
Mfg
Part No
CAPACITORS
1
1
C2
8.2pF
CER CHP C 8.2P +-0.25P C0G 0402 25V LF
0402
Murata
GRM1555C1H8R2CZ01D
2
5
C3,C6,C11,C12,C14
0.1uF
CER CHIP C 0.1U 10% X5R 0402 6.3V
0402
Murata
GRM155R61A104KA01D
3
1
C9
1uF
CAP CER 1.0UF 16V 10% X7R 0805
0805
4
1
C1
2.2uF
CER CHIP C 2.2U 20% X5R 0402 4V
0402
Murata
GRM155R60G225ME15D
5
3
C4,C7,C15
10uF
CER CHIP C 10U 20% X5R 0805 10V
0805
Murata
GRM21BR61A106KE19L
6
2
C10,C13
CASE-B
Kemet
B45196H2476M209
7
2
R1,R31**
33E
CHIP RES 33R 5% 200PPM 0402 1/10W
0402
Panasonic
ERJ-2GEJ330X
8
1
R9
51E
RES 51.0 OHM 1/10W 1% (0402)
0402
Panasonic
ERJ-2GE J510X
820E
CHIP RES 820R 5% 200PPM 0402 1/10W
0402
Panasonic
ERJ-2GEJ821X
RES 1.0K OHM 1/16W 5% 0402 SMD
0402
Yageo
RC0402JR-071KL
100uF
CER CHIP C 47U 20% 10V CASE B
Murata
GRM21BR71C105KA01L
RESISTORS
9
1
R7
10
3
R3,R4,R5
11
1
R2
3.9K to 4.7K
12
1
R6
100K
CHIP RES 100K 5% 200PPM 0402 1/10W
0402
Panasonic
ERJ-2GEJ104X
13
1
L1
4.7uH
Power Inductor
2520
FDK
MIPF2520D4R7
14
5
FB1,FB2,FB3,FB4,FB5
BEAD
Beads
0805
Murata
BLM21PG221SN
LED
0603
Lite-On Inc
LTST-C190KGKT
Schottky Diode
SMD
Toshiba
CMS02TE12L,Q
1K
INDUCTORS
Diodes
15
1
D1
LED
16
1
D2
CMS02
Redpine Signals Inc. Proprietary and Confidential
Page 10
RS9110-N-11-03
Module Integration Guide
Version 3.0
ANTENNA TUNING NETWORK
17
3
Z1,Z2,Z3
18
19
20
1
1
1
U1
U2
ANT1
21
1
22
TBD
Refer to the description in the schematic. Sample part
number for Z1 given here.
Murata
GRM1555C1H8R2CZ01D
40MHz Crystal Oscillator
RS9110-N-11-03 802.11abgn WLAN Module
2.45GHz &5GHz SMD Antenna
TXC
Redpine
RAINSUN
7C40000192
RS9110-N-11-03
AN1003
J1
Microwave Coaxial Connector with switch
Murata
MM8430-2610RA1
1
J3
5X2 Box Header
Burg Header
23
1
C8
0.1uF
CER CHIP C 0.1U 10% X5R 0402 6.3V
0402
Murata
GRM155R61A104KA01D
24
1
R8
4.7K
CHIP RES 4K7 5% 200PPM 0402 1/10W
0402
Panasonic
ERJ-2GEJ472X
25
1
U3
SST
SST25VF016B-75-4I-QAF-T
26
1
FB6
Murata
BLM21PG221SN
IC'S
Antenna
No Populate
16MBIT Serial Flash
BEAD
Beads
Redpine Signals Inc. Proprietary and Confidential
WSON
0805
Page 11
This page is intentionally left blank.
Redpine Signals, Inc. Proprietary and Confidential
RS9110-N-11-03
Module Integration Guide
Version 3.0
3 Recommended RS9110-N-11-03 PCB Landing Pattern
Redpine Signals Inc. Proprietary and Confidential
Page 13
RS9110-N-11-03
Module Integration Guide
Version 3.0
4 Circuit and Layout Guidelines
The following are guidelines for integrating the RS9110-N-11-03 module
into a wireless LAN solution.
1. The WLAN module has a central ground pad of size 5.8mm x 5.2mm.
An application’s layout must have a provision to include this.
a. Please provide a 5.,8 mm X 5.2 mm Copper pad on the Top
side of the application board. Please open the solder mask in
this area so that the Cu is exposed.
b. Please provide a 5.8 mm X 5.2 mm or higher Copper pad on
the bottom side of the application board. Please open the
solder mask in this area so that the Cu is exposed.
c. Please provide at least 20 via’s to connect these pads to the
Ground plane. We recommend that the via’s should be at least
10 mil x 18 mil.
2. For RESET one of the two options should be followed
a. The RESET can be Host driven. At the time of Power-on,
Please ensure that the reset is held low for 20mSec or
more. After this the reset should be driven high.
b. Reset may be driven by an R-C circuit. The recommended
value of ‘R’ is 100 Kohms and the recommended value of
‘C’ is 0.1uF.
3. The RF trace on RF_OUT should have a characteristic impedance of 50
ohms. They can use any standard 50 RF trace (Microstrip or Coplanar
wave guide). The width of the 50 ohms line depends on their PCB
stack like the dielectric of the PCB, thickness of the copper, thickness
of the dielectric and other factors. Customers should work with their
fabrication unit to on these factors.
4. To evaluate transmit and receive performance like Tx Power and EVM,
Rx sensitivity etc., a ‘microwave coaxial connector with switch’ should
be placed between RF_OUT and the antenna.
5. CLK_REF is the reference clock to the module and should therefore be
routed with minimum trace length and should be routed away from
other switching or sensitive traces.
6. The design for embedded system with the Wi-Fi Module should
provide for a peak power load of 400mA.
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5 Chip Antenna Layout Recommendations
The choice of antenna will depend on the application. However, some
recommendation is listed below if an on-chip antenna is desired to be
used:
 Rainsun AN1003
 Fractus FR05-S1-NO-1-004
Please make sure that the Cu is etched out in all the Layers in the
Antenna region. The Ground plane should be removed from under and
both sides of the antenna. Please follow the rules listed in the picture
below while doing the layout for the chip Antenna.
Figure 3 Antenna Layout
The chosen Chip Antennae are /4 antennae and would require external ground
plane for proper functioning and the length of the ground plane behind the antenna
(from the feedpoint of antenna to backwards) should be atleast 1 or 2 inches.
Interms of feedtrace which does not have ground underneath (3mm length), will be
resonant part of the antenna and lower its frequency. This can be a useful tuning
method although this kind of short trace should have little effect which can be
observed on a Network Analyzer. It is recommended to characterize the antenna
portion using a Network Analyzer. Electrical performance of any Chip antenna is
influenced by the physical characteristics of the surrounding ground plane, feed line,
other devices, and materials. This can be used as an advantage by manipulating
certain parameters to affect resonant frequency and match:
1. Ground plane configuration
2. Distance from antenna
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3. Topology around antenna
4. Feed point transmission line impedance
5. Trace width
6. Trace length
7. Matching Network
8. PCB substrate thickness
9. PCB substrate dielectric constant.
5.1 Antenna Matching Network
Provision should be given for a pie network as shown in the schematics.
The values shown below are just for example. The values of the pie
network components depends on the Antenna part, Customers layout,
Gnd plane in the layout & other components in the system which could
affect the radiation pattern of the Antenna. Please use a Network
Analyzer to optimize the values of the match network for the best return
loss.
ANT
RF IN
L=3nHto3.9nH
C=1.5pFto3pF
Ground Plane
ANT
RF IN
C=1.5pFto3pF
L=3nHto3.9nH
Ground Plane
Figure 4 Antenna Matching Network
The radiation pattern of the Antenna can be studied in an Anechoic
Chamber using a Network Analyzer & a Horn Standard Gain Antenna
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6 Reference Oscillator Specifications
Parameter
Specifications
Units
Comments
Nominal Frequency
40
MHz
Frequency Accuracy
± 20
PPM
Over operational
temperature at rated
voltage.
Supply Voltage (VDD)
2.8 ± 10%
or
3.3 ± 10%
V
Power supply should
ideally be locally
regulated, and with
adequate filtering.
Power Supply PSRR
> 60
dB
-40 to + 85
°C
Output Voltage ‘0’ level
< 10% of VDD
V
Output Voltage ‘1’ level
> 90% of VDD
V
Output type
Square Wave
Operational Temperature
Duty cycle
45 to 55
%
< 10
ns
30 ps pk-pk
ps
Wake-up time from Standby
<1
ms
Wake-up time from power-on
<5
ms
Standby current
< 20
uA
Active current
< 10
mA
Output load
> 15
pF
Rise time/Fall time
Periodic Jitter
Phase Noise at offset:
10 Hz
100 Hz
1 kHz
10 kHz
100 kHz
< -89
< -121
< -135
< -146
< - 150
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dBc/
Hz
For industrial grade
products.
Typical Spec of the
Oscillator we use
Typical Spec of the
Oscillator we use.
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6.1 List of Recommended Crystal Oscillators
1. TXC part number 7C40000192 (This part was used for
characterizing all our boards)
The following can also be used based on the specifications
2. Ecera part number FD4000113
3. Fox Xpresso part number FXO-HC538R
4. Kyocera part number KC25200C40C3KE00
5. Tai-Saw Technology part number TW0377E
6. Epson Toyocom SG 150-SCE
7. Epson Toyocom SG 211-SCE
8. Golledge GXO-5332L/E 40.0MHz
9. ECS EC-2532HS
Note: Before finalizing the choice of a crystal oscillator, it is advisable to
carry out detailed EVM measurements on a prototype or evaluation board.
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7 Recommended Specifications for Schottky Diode
• Forward voltage: VFM = 0.40 V (max)
• Average forward current: IF (AV) = 3.0 A
• Repetitive peak reverse voltage: VRRM = 30 V
7.1 Recommended Parts
a. Toshiba part number CMS02
b. NXP part number PMEG3030BEP
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8 Sample Layout
This section provides a sample layout of a board that instantiates
RS9110-N-11-03. This reference board is an SDIO module with a
standard interface into an SDIO slot.
8.1 Top Layer
8.2 Layer 2
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8.3 Layer 3
8.4 Bottom Layer
8.5 Component Placement
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Module Integration Guide
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Revision History
Revision
No.
Version
No.
Date
Author
Changes
1
1.0
Dec ‘08
Suresh
Initial Version.
Applicable to module series
A01.
2
1.1
Jan ‘09
Suresh
Introduced NC’s.
Applicable to module
series A01.
3
2.0
Jan ‘09
Suresh
New layout including the
external clamp diode.
Applicable to module series
B01.
4
2.01
Feb ‘09
Suresh/Venkatesh
Added PCB landing pattern
5
2.02
May ‘09
Peddi Indukuri
Updated company logo
6
2.03
July ‘09
Suresh
Diversity Related Additions
7
2.04
Sep ‘10
Suresh
Mode_Sel_0 made as NC
8
2.05
Aug ‘10
Mohan
Updated recommended part
numbers
9
2.7
Jan ‘11
Mohan Vellanki
New schematics and
PCB layout pattern
Added Reference
Oscillator Specifications
10
2.8
Feb’11
Mohan Vellanki
Updated with new
schematics
11
2.9
Sep’11
Suresh/Mohan
Updated with comments on
antenna usage
12
3.0
Nov, 12
Diganta
Added alternative
connection to the crystal
VDD
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