CHV2241
K-band Oscillator with integrated Q-band Harmonic
Mixer
GaAs Monolithic Microwave IC
Description
The CHV2241 is a monolithic multifunction
proposed for frequency generation and
transposition. It integrates a K-band oscillator, a
Q-band harmonic mixer and buffer amplifiers.
For performance optimisation, an external port
(ERC) allows a passive resonator coupling to
the oscillator (at half output frequency). All the
active devices are internally self biased.
The circuit is manufactured with the P-HEMT
process : 0.25µm gate length, via holes through
the substrate, air bridges and electron beam
gate lithography.
It is available in chip form.
+V
F_lo = (F_rf - F_if)/2
ERC
HIGH Q
RESONATOR
-V
RF
x2
LO_out_aux
IF
Multifunction block diagram
0
-1
Conversion loss (dB)
-2
-3
-4
-5
-6
-7
-8
-9
-10
37
37,5
38
RF Frequency (GHz)
38,5
39
Main Features
n
K-band Oscillator + Q-band harmonic
mixer
n
External resonator for centre frequency
control and phase noise optimisation
n
High quality oscillator when coupled to
a dielectric resonator
n
Low conversion loss
n
High temperature range
n
On chip self biasing
n
Automatic assembly oriented
n
Chip size 1.82 x 0.97 x 0.1 mm
Typical conversion loss characteristic
Main Characteristics
Tamb = +25°C
Symbol
F_rf
F_lo
Pn
Lc
RF frequency
Oscillator frequency
Oscillator phase noise @ 100kHz (38GHz)
Conversion loss
Parameter
Min
37.5
Typ
38.25
-100
7
Max
39
Unit
GHz
dBc/Hz
dB
(F_rf - F_if)/2
ESD Protections : Electrostatic discharge sensitive device observe handling precautions !
Ref. : DSCHV22411074 -15-Mar.-01
1/8
Specifications subject to change without notice
united monolithic semiconductors S.A.S.
Route Départementale 128 - B.P.46 - 91401 Orsay Cedex France
Tel. : +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09
UMS [ UNITED MONOLITHIC SEMICONDUCTORS ]
