8-4
Digital Radio Receiver Down
Converter Modules for 21.2 to
23.6 GHz
Technical Data
Description
This digital radio receiver module
provides the RF receive and down
conversion function for 23 GHz
digital radios. These modules offer
excellent phase noise perfor-
mance and can be easily phase
locked to a frequency reference.
The receiver module provides an
output power of 3␣ dBm at the IF
frequency and is ideal for use in
radios using 2 and 4 level FSK
modulation. The excellent low
noise figure is achieved by using
the Hewlett-Packard PHEMT
MMIC technology coupled with an
image reject mixer. The receiver
module features an integrated
ultra low noise silicon bipolar
Features
• Low Noise PHEMT MMIC
Front End Amplifier
• Image Reject Mixer
• Integrated Silicon Bipolar
VCO Local Oscillator
• Low Phase Noise
• Operated Over -30°C to
+70°C
• Excellent Tuning Linearity
• Sample Output for Phase
Locking
DRR1-23XX
VCO operating in the S/C band as
the local oscillator. A portion of
the oscillator output is coupled off
and is applied to a frequency
divider network. The low fre-
quency output from the frequency
divider can then be easily used to
phase lock the source. The local
oscillator output is applied to a
frequency multiplier network to
produce the desired LO frequency
to the mixer.
Applications
This digital radio receiver module
provides the total RF receive and
down conversion function in
radios operating in the 21.2 to
23.6␣ GHz band.
Block Diagram
MMIC
MMIC
MSA-1100
MMIC
MIXER
MMICMMICBPF
BPF
RF
Input
IF
Output
Signal
Sample
Output
Tuning
Voltage
Receiver Module
21.2 to
23.6 GHz
LO X3
+4
AMPAMP
LNA
AMP
X2A
5965-5087E
8-5
DRR1-23XX Absolute Maximum Ratings (T
A
= -30 to +70ºC)
Parameters Units Ratings
DC Circuit Power +8.5 Volts 10
+5.0 Volts +5.5
-5.0 Volts -5.5
Tuning Voltage Volts 14
Notes:
1. Operation in excess of any one of these parameters may result in permanent
damage.
2. A thermal interface medium must be used between the bottom of the
package and its mating surface to ensure optimum heat transfer.
DRR1-23XX Electrical Characteristics
Parameters Units Min. Typ. Max.
RF Tuning Range GHz 21.2 23.6
IF Frequency MHz 630 or 1260
IF Bandwidth MHz ±20
LO Frequency GHz 20.57 22.97
or 19.94 or 22.34
Gain dB 18 26
Gain Flatness over 300 MHz dB ±1
Noise Figure dB 4.5 5.5
Operating Temperature Range °C -30 70
Storage Temperature Range °C -45 85
Power Input at P-1dB dBm -22 -17
LO Leakage at I[1] dBm -15
LO Leakage at R[2] dBm -15
Return Loss RF Port dB 12
Return Loss IF Port dB 14
Image Rejection dB 12 15
Sample Out Frequency MHz 857 957
or 831 or 931
Sample Out Power dBm -10 0
Spurious Output[3] dBc -60
Phase Noise @ 100 KHz dBc/Hz -85 -82
Tuning Voltage V 1 12
Input Capacitance, Nom pf 1,000
LO Tuning Sensitivity MHz/V 300 500
LO Tuning Sensitivity Variation 1.5 : 1 2.0:1
DC Circuit Power: 8.5 Volts mA 300
5 Volts mA 400
-5 Volts mA 30
Case Dimensions inches 3.5 x 1.25 x 0.40
Max Power at Input/no damage dBm 10
Humidity Non Condensing % 85
Condensing % 95
Connectors WR 42 or SMA
Notes:
1. LO and Harmonic/sub-harmonic leakage at I with RF terminated into a 50␣ Ω load.
2. LO and Harmonic/sub-harmonic leakage at R up to 50 GHz.
3. Measured at IF port within the IF bandwidth with single tone RF input of <- 20 dBm.
8-6
DRR1-23XX Typical Performance
FREQUENCY (GHz)
Figure 2. Image Rejection vs.
Frequency.
5
10
15
20
25
30
IMAGE REJECTION (dB)
Figure 3. Noise Figure vs. Frequency.
NOISE FIGURE (dB)
22
23
Figure 4. Power In at P1dB Out vs.
Frequency.
1 10 100 1000
KHz Offset from Carrier
Figure 5. Phase Noise at 23 GHz vs.
KHz Offset from Carrier.
-140
-100
-120
-40
-80
-60
dBc (Hz)
14562 3 7 8 9 10 11 12
TUNING VOLTAGE (V)
Figure 6. Tuning Voltage vs. Frequency
and Modulation Sensitivity.
21
24
300
250
350
200
400
FREQUENCY (GHz)
MODULATION SENSITIVITY (MHz/V)
21 2322 24 21 2322 24
FREQUENCY (GHz)
2
3
4
5
6
21 2322 24
FREQUENCY (GHz)
Figure 1. Conversion Gain vs.
Frequency.
16
18
20
22
28
26
24
GAIN (dB)
21 2322 24
FREQUENCY (GHz)
-24
-22
-20
-18
-12
-14
-16
PIN (dBm)
T = +25°C
T = –30°C
T = +70°C
Spec Min
T = +25°C
T = –30°C
T = +70°C
T = +25°C
T = –30°C
T = +70°C
T = +25°C
T = –30°C
T = +70°C
Spec Min
Spec Min
Spec Max Spec Max
TUNING VOLTAGE
MODULATION
SENSITIVITY
Product Options
Specify part number followed by option. For example:
DR R 1 – 23 X X
Model Number Prefix = Digital Radio
R = Receiver Module
Internal Use
1 = SMA Connector
2 = WR-42 Waveguide Connector
1 = 630 MHz IF Frequency
2 = 1260 MHz IF Frequency
23 = 21.2 to 23.6 GHz Frequency Band
Powering Up Instructions
The -5 volts must be applied to the
receiver module before applying
the +5 volts. Likewise when
shutting down the receiver
module the +5␣ volts must be
removed before the -5 volts is
turned off. The +8.5␣ volts can be
turned on in any sequence. Failure
to follow this procedure could
cause permanent damage to the
module.
Mounting Instructions
Case must be mounted firmly,
with screws, to an adequate
metallic structure that has suffi-
cient thermal properties to
maintain the module case at a
temperature not to exceed 70°C.
8-7
Case Dimensions (specified in inches)
1.250
11x .200
2.700
3.50
1.10 8x .100
1.70
2.35
.120
11x .220
11x Ø .025
.670
.170
.420
.640
4X 4-40 UNC-2B
.120
DETAIL A
SEE DETAIL A
.820
6x Ø
.125
.120 THRU
.445 .500
.500
.445
GND
GND
GND
1F
VT
+8.5V
-5V
+5V
+8.5V
+5V
DRRI-23XX
S/N XXXX
D/C XXXX
F/4
H
2.430
.40 MAX
.375
Ø .067 ±.001
.100
