Text preview for : GEVO3.pdf part of Rficsolutions Inc. GEV03 The GEV03 is 15 to 20 GHz broadband VCO
designed on 2 um GaAs HBT process. The device is
designed for high frequency applications. The
resonator part is split into on-chip inductor and offchip
varactor. The GEV03 consumes only 3.5 mA
current.
The phase noise of the GEV03 can be improved
using the high Q off chip resonator.
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RFIC Solutions Inc.
VCO
Description .
Preliminary Datasheet GEV03
Functional Diagram
.
The GEV03 is 15 to 20 GHz broadband VCO designed on 2 um GaAs HBT process. The device is designed for high frequency applications. The resonator part is split into on-chip inductor and offchip varactor. The GEV03 consumes only 3.5 mA current. The phase noise of the GEV03 can be improved using the high Q off chip resonator.
Applications. · Digital Radio · VSAT · Multipoint Radio Systems · LMDS (Local Multipoint Distribution Services)
.
Key Features. . · Broadband VCO · Low Phase Noise · Low Current, Low Cost · Operating Temperature 0 to 85 0C Range
Electrical Specifications.
.
Conditions: Vcc = 4.2 V & TA=25 0C
Parameter
Frequency Range Pout Phase Noise @ 10 kHz @ 100 kHz Input Reflection Coefficient @ 15 GHz @ 20 GHz Operating Current Supply voltage
Min
15
Typical
6
Max
20
Units
GHz dBm dBc dBc
-42 -62 5 5.5 3.5 4.2
dB dB mA V
March 12, 2007
www.rficsolutions.com
Page 1 of 2
RFIC Solutions Inc. Proprietary Information
Data subject to change without Notice
RFIC Solutions Inc.
VCO
Simulated Results. .
Preliminary Datasheet GEV03
dB (S11) Over Frequency, GHz
10
Phase Noise
-40 Phase Noise (dBc) -45 -50 -55 -60 -65 1E4 2E4 3E4 4E4 5E4 1E5 9E4 8E4 7E4 6E4
8 dB(S(1,1)) 6 4 2 0 6 8 10 12 14 16 18 20 freq, GHz
Offset Frequency
Oscillation Build Up
400 200 Vout, mV
400 200
Steady State
Vout, mV
0 2 4 6 8 10 time, nsec
0 -200 -400
0
-200
-400 29.0 29.1 29.2 29.3 29.4 29.5 29.6 29.7 29.8 29.9 30.0
time, nsec
Pout Over Varactor
-4 Power Output (dBm) -6 -8 -10 -12 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50
Frequency (GHz)
Varactor Tuning
25 20 15 10 5 0 0 0.1 0.2 0.3 Capacitance (pF) 0.4 0.5 0.6
Varactor Capacitance (pF)
March 12, 2007
www.rficsolutions.com
Page 2 of 2
RFIC Solutions Inc. Proprietary Information
Data subject to change without Notice