OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

X3DC21E2S

P1-P3P4-P4
Available on Tape
and Reel for Pick and
Place Manufacturing.
USA/Canada:
Toll Free:
Europe
:
(315) 432-8909
(800) 411-6596
+44 2392-232392
Model X
3
DC
21
E2S
Rev A
b
Doherty Combiner
Description
The X3DC21E2S is a low profile, high performance Doherty Combiner
in a new easy to use, manufacturing friendly surface mount package.
The X3DC21E2S is designed particularly for Doherty Amplifier
applications, where tightly controlled phase and amplitude imbalance
as well as low insertion loss are required for maximum and low power
condition. It can be used in high power applications up to 200 watts.
Parts have been subjected to rigorous qualification testing and they are
manufactured using materials with coefficients of thermal expansion
(CTE) compatible with common substrates such as FR4, G-10, RF-35,
RO4350 and polyimide. Produced with 6 of 6 RoHS compliant tin
immersion finish
Electrical Specifications
**
res:
• 2110-2170 MHz
• High Power
• Low Amp Imbalance
• Very Low Loss
• Production Friendly
• Tape and Reel
• Lead Free
Frequency
Return
Loss
[1]
Insertion
Loss
[1]
Amplitude
Imbalance
[1]
Phase
Imbalance
[1]
Operating
Temp.
MHz dB Min dB Max dB Max Degrees ºC
2110 – 2170 20 0.15 ±0.12 90 ± 3.0 -55 to +95
Return
Loss
[2]
Insertion
Loss
[2]
Port
Extension
[3]
Power
[4]
Θ
ΘΘ
ΘJC
dB Min dB Max Degrees
Avg. CW
Watts
ºC/Watt
20 0.20 8 200
28
**Specification based on performance of unit properly installed on Anaren Test Board
[1] At maximum power condition, Doherty combiner functions as an equal-split power combiner.
[2] At low power condition, Doherty combiner functions as a 100Ω to 50Ω impedance transformer.
[3] There are short 50 ohm lines associated with input ports of 8° at 2140MHz. Details in page 2.
Mechanical Outline
USA/Canada:
Toll Free:
Europe:
(315) 432-8909
(800) 411-6596
+44 2392-232392
Available on Tape and
Reel for Pick and Place
Manufacturing.
Model
X3DC
21
E2S
Rev A
Doherty Amplifier Configuration
Doherty Combiner Pin Configuration
The X3DC21E2S has an orientation marker to denote Pin 1. Once port one has been identified the other ports are
known automatically. Please see the chart below for clarification:
Pin 1 Pin 2 Pin 3 Pin 4
Combining Port
Not Used Peak Amp Port Main Amp Port
There are inevitably short lines associating with input ports in some high frequency band parts. The length of the
short line is specified as electrical length at center frequency and noted as port extension in this datasheet. The
designer should take this length into the consideration to optimize the offset line length.
90°
Pin 2
Pin 4
50
Ω
Pin 1
Pin 3
50Ω
35Ω
50Ω
90°
90°
Main Amp
Peak Amp
50Ω
35Ω
90°
RF input
NC
RF output
0°
90°
Offset line
Port Extension
Anaren Doherty
Combiner
50Ω
Available on Tape
and Reel for Pick and
Place Manufacturing.
USA/Canada:
Toll Free:
Europe
:
(315) 432-8909
(800) 411-6596
+44 2392-232392
Model X
3
DC
21
E2S
Rev A
Definition of the Specifications
To guarantee the part performance in Doherty architecture, the part is specified in Doherty operation for maximum
power condition and low power condition. The following specification definition assumes the extra port extension is
deembeded from the raw S parameter and the parts is measured with Pin n connected to Port n (where n=1, 2, 3, 4).
• Maximum power condition
Under the maximum power condition, the symmetrical Doherty architecture requires main amplifier and peak amplifier to
work at full capacity with the optimum termination (50
Ω
). The two amplifiers should deliver RF power of equal
magnitude and 90 degree phase difference. Doherty combiner functions as a coherent power combiner and supplies the
90 degree phase compensation. The following specification is defined with 50
Ω
port impedance at three ports for this
condition.
Parameter Definition Mathematical Representation
Return Loss
The impedance match at
the combining port to a
50Ω system.
20log
11
S
Insertion Loss
The combined power
divided by the sum of
input power under the
perfect combining
condition.
10log
(
)
2
14
2
13
SS +
Phase Imbalance
The phase difference
between Peak-Combined
path and Main-Combined
path at
c
ω
= 2140MHz.
Phase
(
)
)(
14 c
ω
S
– Phase
(
)
)(
13 c
ω
S
Amplitude Imbalance
The magnitude difference
between Peak-Combined
path and Main-Combined
path.
(
)
2
S20logS20log
1314
−
• Low power condition
Under low power condition, the Doherty operation turns off peak amplifier and requires main amplifier to be terminated
with double of the optimum impedance (100
Ω
). With the peak port open, Doherty combiner servers as an impedance
transformer transforming 50
Ω
at combining port to 100
Ω
at main amplifier port. The following specification is defined
under the port impedance condition of Port 1 (Combining Port) 50
Ω,
Port 4 (
Main Amp Port) 100 Ω and
Port 3 (Peak Amp
Port) open
.
Parameter Definition Mathematical Representation
Return Loss
The impedance match of
the 50 to100
transformer.
20log
11
S
Insertion Loss
The output power divided
by input power.
20log
41
S
P1-P3P4-P4

X3DC21E2S

Mfr. #:
Buy X3DC21E2S
Manufacturer:
Anaren
Description:
Signal Conditioning 2110-2170MHz IL.15dB -55C to +95C
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet