HMC267QS16G
MICROWAVE CORPORATION
GaAS MMIC SMT QPSK MODULATOR 5 - 6 GHz
FEBRUARY 2000
Features
General Description
The HMC267QS16G QPSK Modulator is de-
signed to phase-modulate an RF signal into
quadrature phase states. The 5V differential
voltages applied (A to A and B to B) at the control
ports define the phase state at the RF output port.
The QPSK Modulator is ideal for 5.2 UNII and 5.8
ISM microwave radio applications. The
HMC267QS16G replaces larger, more expen-
sive drop in hybrid QPSK Modulators. Excellent
amplitude and phase balance is provided by
closely matched monolithic balun and FET cir-
cuits delivering 30 dB of carrier suppression.
Except for carrier suppression, the data pre-
sented here was measured under static condi-
tions in which a 0/+5 Vdc differential voltage is
applied to the control ports.
LINEAR PERFORMANCE: +20 dBm P1dB
30 dBc CARRIER SUPPRESSION
LOW COST PLASTIC PACKAGE!
5
Guaranteed Performance,
For 5V Differential Control Voltage, 50 Ohm System, -40 to +85 deg C
Parameter
Frequency
Min.
Typ.
Max.
Units
Insertion Loss
5.0 - 6.0 GHz
11
14
dB
Amplitude Balance
5.1 - 5.4 GHz
5.4 - 5.7 GHz
5.7 - 5.9 GHz
1.5
2.0
1.0
2.5
3.0
2.3
dB
dB
dB
Phase Balance
5.1 - 5.4 GHz
5.4 - 5.7 GHz
5.7 - 5.9 GHz
6
4
5
8
6
7
deg
deg
deg
5.1 - 5.4 GHz
5.4 - 5.7 GHz
5.7 - 5.9 GHz
6
7
7
dB
dB
Input Return Loss
Output Return Loss
5.1 - 5.4 GHz
5.4 - 5.7 GHz
5.7 - 5.9 GHz
9
7
6
dB
Carrier Suppression
(Driven with a 1 MHz square wave, 5Vp-p)
5.0 - 6.0 GHz
5.0 - 6.0 GHz
23
17
30
20
dBc
Input Power for 1 dB Compression (P1dB)
dBm
12 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Web Site: www.hittite.com
5-18