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Xicom XTD-750DBS1 750W DBS-Band TWTA (Antenna Mount)
- 750 Watts DBS-Band (17.3 to 18.4 GHz)
- No Shelter Required
- High Efficiency Dual-Stage TWTs
- Complete RS-232/422/485 Interface
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Xicom XTD-750DBS1 750W DBS-Band Antenna Mount TWTA
The Xicom XTD750DBS1
are compact selfcontained,
antenna mountable power amplifiers
designed for low cost installation and long life.
The design eliminates the need for an amplifier
shelter as well as a long waveguide run
between the amplifier and the antenna feed
horn. RF harmonic filters, cooling, and
monitoring & control systems are all
selfcontained
within the HPA. These features
provide high reliability, low maintenance costs,
and low replacement costs.
XTD-750DBS Features
- 750 Watts DBS-Band
- No Shelter required
- Short Waveguide Run
- Power Factor Correction
- High efficiency
DualStage
TWTs
- Complete RS232/
422/
485 Interface
The amplifier incorporates high efficiency
multistage
collector TWTs. Some of the
benefits of this type of TWT are: reduced prime
power consumption, lower internal operating
temperatures, and reliability enhancement.
These benefits are obtained for both the linear
and saturated modes of operation.
One of the features of the XTD750DBS1 is incorporation of power factor correction and
reduces the required voltamps. The
combination of power factor correction and
high efficiency TWTs reduces input VoltAmps
by 45% when compared to equivalent
amplifiers. A high frequency resonant
conversion power supply that is used accepts a
wide range of prime power (180 to 260 VAC).
The automatic features of the power supply
include quick recovery from prime power
outages and multiple helix fault resets (three
fault cycles).
A complete serial monitoring and control
system is built into the unit.
The XTD-750DBS1
may be configured for
single thread, redundant or phasecombined
operation. It can be configured to control one or
two switches.
An optional linearizer is available to allow
increased transmit power while meeting
spectral regrowth requirements.
A remote external controller is available to
operate the HPA from user selected location.
Mounting brackets can be supplied to mount
the HPA to most popular antennas.
tab 2
| FREQUENCY RANGE |
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17.3 18.4 GHz
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Output Power |
| Traveling Wave Tube |
750W
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| Rated Power @ Amplifier Flange |
650W
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Gain |
| Large Signal, minimum |
65 dB |
| Small Signal, minimum |
70 dB |
| Attenuator Range (continuous) |
25 dB |
Maximum SSG Variation Over:
Any narrow band
Full Band |
1.0 dB per 80 MHz
3.0 dB |
| Slope, maximum |
± 0.04 dB/MHz |
| Stability, 24 Hr maximum |
± 0.25 dB |
| Stability, Temperature |
± 1.0 dB maximum over temperature range at any frequency |
Intermodulation
at 4 dB total output backoff
with two equal signals |
- 18 dBc
|
| HARMONIC OUTPUT, maximum |
- 60 dBc |
| AM/PM CONVERSION, maximum |
3.0 deg/dB at 6 dB below rated output power |
NOISE POWER, maximum
Transmit Band
Receive
|
- 70 dBW/4 kHz
- 150 dBW/4 kHz
10.95 to 12.75 GHz
|
Group Delay Max over any 80 MHz Bandwidth
Linear
Parabolic
Ripple |
± 0.01 nS/MHz
± 0.005 nS/MHz²
0.5 nS/Pk-Pk
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| RESIDUAL AM NOISE, maximum |
-50 dBc to 10 kHz
- 20 (1.5 + logf) dBc 10 to 500 kHz
- 85 dBc above 500 kHz
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| PHASE NOISE, maximum |
10 dB below IESS phase noise profile
AC fundamental -50 dBc Sum of all spurs -47 dBc
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VSWR
Input, maximum
Output, maximum |
1.3:1
1.3:1 |
Prime Power |
| 180-260 VAC |
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| 47 to 63 Hz, single phase |
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| 2450 VA Maximum |
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| 0.95 Minimum Prime Power Factor |
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Environmental |
| NONOPERATING TEMPERATURE RANGE |
-50° C to + 70° C |
| OPERATING TEMPERATURE RANGE |
-40° C to +50° C |
| HUMIDITY |
Up to 100% Condensing |
| ALTITUDE |
10,000 feet MSL maximum |
| SHOCK AND VIBRATION |
Normal Transportation |
| COOLING |
Forced Air |
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