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PDF CHV2242A Data sheet ( Hoja de datos )
| Número de pieza | CHV2242A | |
| Descripción | Q-band VCO based on Ku-band Oscillator and Q-band Multiplier | |
| Fabricantes | United Monolithic Semiconductors | |
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CHV2242a
Q-band VCO based on Ku-band Oscillator
and Q-band Multiplier
GaAs Monolithic Microwave IC
Description
The CHV2242a is a monolithic multifunction for
frequency generation. It integrates a Ku-band
oscillator with frequency control (VCO), a Q-
band frequency multiplier and buffer amplifiers.
For performance optimisation, two external
ports (ERC1 and ERC2) allow a passive
resonator coupling to the oscillator (at one third
of output frequency). On chip Schottky diode,
based on a P-HEMT, is used as varactor. 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.
Main Features
n Ku-band VCO + Q-band multiplier
n On chip varactor
n External resonator for centre frequency
control and phase noise optimisation
n Low phase noise
n Auxiliary output at VCO frequency
n High temperature range
n On-chip self biasing
n Automatic assembly oriented
n Chip size 2.41 x 1.18 x 0.1 mm
Main Characteristics
Tamb = +25°C
Symbol
Parameter
F_out Output centre frequency
F_vco Oscillator frequency
F_tune Output frequency tuning range
Pout Output power
F_VCO = F_out/3
ERC1
MEDIUM Q
RESONATOR
ERC2
+V
-V
x3
V_tune
Multifunction block diagram
RF_out
(F_out)
38,7
38,6
38,5
38,4
38,3
38,2
38,1
0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1 1,1 1,2
Tuning voltage (V)
Typical tuning characteristic
(coupled to a micro-strip filter
Min Typ Max Unit
38 38.25 38.5 GHz
F_out/3
150 200
MHz
57
dBm
ESD Protections : Electrostatic discharge sensitive device observe handling precautions !
Ref. : DSCHV22421074 -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
1 page  
Q-band VCO
CHV2242a
Proposed External Medium Q Resonator
This resonator can be used for 77GHz FMCW-based radar applications.
The chip has been especially designed to be coupled to a medium Q resonator
printed on temperature compensated soft substrate. The resonance is given by
three half wave coupled lines. The length of the coupler (L) gives the centre
frequency and the space between the coupled lines (s) gives the bandwidth. For
easy connection and phase considerations half wave lines are at the input and
output of the filter. All the recommended dimensions are given in the following
drawing.
The main substrate characteristics are the following (ROGERS R03003)
Dielectric
constant
3
Thickness
250µm
Dissipation
factor (10GHz)
0.0013
Thermal
coefficient
13 ppm/°C
The typical resonator length (L) is 7.35mm for a coupling value (s) of 0.4mm and
for a frequency of 38.25GHz. However this L value should have to be adjusted
depending on the final chip environment.
Other possibility is ARLON/CLTE substrate. (L is 7.27mm for s=0.4mm)
Ref. : DSCHV22421074 -15-Mar.-01
5/8 Specifications subject to change without notice
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
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet CHV2242A.PDF ] | |
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