Application Note, Click to open in new window

AN RFMD® APPLICATION NOTE
RFMD2014 Application Note
Product Description
The RFMD2014 is direct quadrature modulator for use in cellular base stations and other communications systems.
RFMD2014 supports cellular, 3G, WiMax, and LTE air interface standards. This device features operation from 1450MHz to
2700MHz with excellent carrier and sideband suppression and ultra-low noise floor. The device is manufactured in an
advanced GaAs HBT process. The RFMD2014 operates from a single 5V supply and is packaged in a low cost, 4mm x 4mm,
24-pin leadless package.
This is to provide tuning information for better Input Return Loss on the LO port at 1450MHz.
The following performance data was collected at room temperature, VCC is 5V and BBIP, BBIN, BBQP, BBQN is 1.5V. C8 is 1.5pF
and L1 is 12nH.
RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ are trademarks of RFMD, LLC. BLUETOOTH is a trademark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered trademarks are the property of their respective owners. ©2012, RF Micro Devices, Inc.
AN120103
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
1 of 3
RFMD2014 Application Note
P1
1
2
HDR_1X2
1
2
P2
J7
GND
HDR_1X2
J6
VCC1
VCC2
GND
GND
J7
R1
0 ohm
GND
J6
R2
0 ohm
C3 4.7uF
C4 4.7uF
GND
GND
C10
C11
GND
DNI
GND
C2
1000pF
C1
100pF
DNI
GND
GND
J2
R3
0 ohm
5
GND
N/C
GND
20
19
GND
21
IP
IN
23
22
GND
GND
7
GND
N/C
6
N/C
GND
J3
J3
J4
J4
GND
16
15 N/C
14
C7
12pF
J5
J5
GND
GND
13 N/C
GND
GND GND
GND
GND
C6
1000pF
17
GND
GND
LON
12
J1
4
GND
24-LEAD QFN
U1
RF_OUT
11
C9
DNI
GND
C5
100pF
18
VCC
LOP
QP
J2
GND
QN
3
10
GND
9
2
GND
N/C 1
VCC
24
J1
L1
12nH
GND
C8
1.5pF
GND GND
GND
8
GND
25
GND
GND
Figure 1. 1450MHz Application Circuit
AN120103
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
2 of 3
RFMD2014 Application Note
Figure 2. S-Parameters (500MHz to 3GHz)
AN120103
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
3 of 3