AMPLIFIERS
Microwave Amplifier
8349B
Continuous 2 to 20 GHz
15 dB gain to 18.6GHz
HP 8349B
The HP 8349B Microwave Amplifier delivers increased microwave
power performance across a 2 to 20 GHz frequency range. This general-purpose broadband power amplifier is designed for maximum reliability and configured for the greatest convenience in interfacing
with Hewlett-Packard's microwave sources, the HP 8350B Sweep
Oscillator, HP 8340B/8341B/8360 Series Synthesized Sweepers,
and HP 8671B, 8672A, or 8673 series Synthesized Signal Generators.
Providing 100 mW (+20 dBm) of unleveled output power from 2 to
18.6 GHz, 63 mW (+18 dBm) from 18.6 to 20 GHz, the HP 8349B
offers one of the broadest operating bandwidths available from a solidstate power amplifier. This performance is achieved using a multiple
stage GaAs FET design, resulting in > 15 dB of gain from 2 to 18.6
GHz, and > 12 dB of gain from 18.6 to 20 GHz.
The HP 8349B can also provide externally-leveled output power
without using an external coupler and detector, since these components are built-in and are compatible with Hewlett-Packard microwave sources. The HP 8349B is also equipped with an output power
display, minimizing the need for an external power meter and enhancing the amplifier's utility. For example, the HP 8349B can be
placed at the end of a long RF cable where the microwave output
needs to be amplified, leveled and monitored.
Naturally, the versatile power control features of the microwave
source (e.g., calibrated power, power sweep, power slope and remote
power control via the Hewlett-Packard Interface Bus) can be accurately transmitted through the HP 8349B during external leveling operations.
The HP 8349B also has a built-in source module interface, enabling it to properly bias and control the HP 83550 series millimeterwave source modules. Using the HP 8349B and a millimeter source
module extends the capabilities of any 11 to 20 GHz HP microwave
source to millimeter-wave frequencies.
100 milliwatts across 2 to 18,6 GHz
<13 dB typical noise figure
The dynamic range of a scalar network analyzer measurement system is limited by the maximum output power of the microwave source
and the sensitivity of the detectors. Using the illustrated configuration, up to 100 dB of dynamic range can be achieved by combining the
calibrated dynamic range of the reference detector (R) with that of
the transmission detector (B) in a ratio measurement (B/R). The HP
8349B makes this possible by extending the external crystal leveling
power control of the microwave source. Hewlett-Packard Application
Note 327-1 discusses this application in detail.
RFI susceptibility tests can also greatly benefit from the high quality amplifying characteristics of the HP 8349B.
Range: 2-20 GHz
Minimum Output Power (at +5dBm input):
1 dB Compression Point: +21 dBm, nominal
Power Flatness (Leveled): ±1.25 dB
Minimum Small Signal Gain (at -5 dBm input):
2.0 to
18.6 GHz: 15dB
18.6
to
Noise Figure: <13 dB, typical
Impedance (Input and Output): 50 ohms, nominal
VSWR:
20.0 GHz: 13dB
Applications
The broadband high power of the HP 8349B is ideal, whether in a
versatile bench-top arrangement or a dedicated rack-mount system.
In antenna testing, the HP 8349B can be placed at the end of long RF
cables, delivering high power right to the device under test. In
EW/ECM systems, the HP 8349B can be combined with the HP
8340B/8341B/8360 Series, or the HP 8673 series Synthesized Signal
Generators to provide high power pulses with little degradation in
pulse performance. The HP 8349B is also an excellent choice as a
microwave driver for TWTs, high power amplifiers, or mixers. And
with a typical noise figure < 13 dB, the HP 8349B is often used as a
pre-amplifier for spectrum analyzers and frequency counters.
Maximum Continuous Input, to the input or output ports:
+27 dBm
Harmonics (at +20 dBm output):
2.0 to
11.0 to 20.0 GHz: <-30 dBc typical
Non-Harmonic Spurious: <-55 dBc.
Third Order Intercept: + 33 dBm, nominal.
Rise/Fall Time: <10 ns typical
General
Reverse Isolation: >50 dB, typical
RF Input/Output Connectors: Type N Female
Size: 133 H x 214 W x 366 mm D (5.2" x 8.36" x 13.6").
Weight: Net, 7 kg (15 lb); shipping, 14 kg (31 lb).
Opt 001 Rear Panel RF Input/Output add $10
Opt 002 Rear Panel RF Input with Front Panel RF add $100
Opt W30 Two Years Extended Service add $140
(RF), ±10V (DC)
11.0 GHz: <-20
Output
dBc
Price
HP 8349B 2 to 20 GHz
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