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QPSK
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Modulators / Demodulators
Mini-Circuits QPSK Modulator and I/Q Modulator / Demodulators are available in connectorized or surface mount packages up to 2000 MHz. These components provide excellent harmonic suppression as well as good carrier and sideband rejection while maintaining low conversion loss over the operating frequency band.
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Modulator
SFT3401
Hangzhou Softel Optic Co., Ltd.
SFT3401 QPSK modulator is a high performance modulator developed according to DVB-S (ETS300-4221) QPSK standard. It has powerful spectral efficiency, advanced anti-jamming and competitive price-performance ratio. Apart from these, this modulator also has access to FM microwave device. Moreover, to guarantee the high transmission performance, this QPSK modulator adopts the disposal of energy diffusing, RS coding, convolution interlacing and pre-modulated baseband shaping. To sum up, all the approaches make this NDS3401 QPSK modulator can be widely used in Broadcasting, Interactive Services, News Gathering and other Broadband satellite applications.
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17 To 19 GHz QPSK Modulator
CCM19001
The CCM19001 is a Differential Drive Digital QPSK (Quadrature Phase Shift Keying) modulator operating across the 17.0 to 19.0 GHz frequency range. The modulator utilizes differential drive digital inputs (180º apart) to drive both of the bi-phase modulators (mixers) integrated into the assembly. The modulator is a combination of a matched pair bi-phase modulators, which are in quadrature (90º) to each other. It is modulated by switching polarities of the DC voltage controls in 4 different logic states ("0,0", "0,1", "1,0" & "1,1") for 4 phase states. The QPSK modulator provides constant amplitude, 90º vector: 0 (ref.), 90º, 180º, 270º and operates across the -55º to 85º C temperature range.
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2x8 QPSK Mixer
To be used for optical coherent detection such as DP-QPSK receivers, Optoplex’s ten-port 2x8 Coherent Mixer (aka QPSK mixer) combines the incoming signal with a local oscillator to generate eight light states in the complex-field space. The eight light output signals can then be coupled into four pairs of balanced detectors. The block diagram below shows the application of a 2x8 coherent mixer in a DP-QPSK receiver. Since the mixing process is data rate independent, the devices can be used for any data rate in applications such as 40Gb/s or 100Gb/s transmission systems.
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Signal Finder
Digital satellite finder, Digital satellite meter, HD DVB-S/S2, Demodulation QPSK, 8PSK, Display POWER、C/N、Quality value, Upgrade software & parameters through USB2.0 Port, Easy to read LCD.
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QPSK Quadraphase Modulators To 1880 MHz
QPSK Modulators incorporate a 90° hybrid, 2-way 0° divider and two BPSK Modulators to phase shift an input signal by 0°, 90°, 180°, and 270° by injecting ± 20 mA control signals at ports D1 and D2.
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2x4 QPSK Mixer
Optoplex's 2X4 polarization diversified optical hybrid (aka QPSK Mixer) is a 2x4 device, which mixes an incoming signal with a local oscillator. The 4 outputs of this device are connected to 4 single-ended detectors (see the function diagram below). The device features a monolithic optical core integrating a PBS with an interferometer which is also widely used in Optoplex's interleaver and DPSK-demodulator platforms. This device is athermal, colorless, data-rate independent, compact in size and designed for manufacturability. This platform can also be extended to a 2X8 polarization diversified hybrid to incorporate with 4 pairs of balanced detectors.
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Spectrum Analyzer & Sat TV Instrument
Satlook Color HD
Spectrum-analyzer 950-2150MHz. • DVB/S S/2 -receiver 920-2150MHz. • Super bright 5" 16:9 TFT-LCD color display. • Automatic Satellite identification. • Readout of NIT - gives SAT ID and TV/Radio-channel info. • Digital BER and S/N-ratio (DVB-S, S/2). • QPSK and 8PSK constellation diagram. • DVB-S (Free to Air) and SAT-analog TV-picture. • LNB voltage 13/18V, 22KHz tone switch. • DiSEqC according to level 1.0, 1.1 and 1.2. • SatCr-control (UniCable). • Favourite channel list (100 channels) for FTA DVB-S. • Lots of memory positions for spectrum pictures. • RS232 for PC-connection (up/download). • Rechargeable Li-Ion battery.
