Digital Radio Receiver Down
Converter Modules for 21.2 to
23.6 GHz
Technical Data
DRR1-23XX
Features
鈥?Low Noise PHEMT MMIC
Front End Amplifier
鈥?Image Reject Mixer
鈥?Integrated Silicon Bipolar
VCO Local Oscillator
鈥?Low Phase Noise
鈥?Operated Over -30擄C to
+70擄C
鈥?Excellent Tuning Linearity
鈥?Sample Output for Phase
Locking
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
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
Receiver Module
Tuning
Voltage
LO
X3
BPF
MMIC
AMP
MMIC
AMP
MMIC
X2A
Signal
Sample
Output
+4
MSA-1100
MMIC
AMP
BPF
RF
Input
LNA
MIXER
21.2 to
23.6 GHz
MMIC
IF
Output
5965-5087E
8-4
AGILENT
1
2
3
4
