The Ka-band 200W power amplifier system can realize the function of amplifying the Ka-band signal, has excellent
performance, can meet the needs of the satellite ground station system, and is one of the components of the
satellite communication microwave channel equipment uplink. The amplifier system consists of two Ka-band 200W power
amplifiers and a switch control part, which can realize automatic fault switching. The equipment can realize
functions such as monitoring, setting working parameters, reporting equipment status information regularly, and
reporting equipment status information by receiving query commands through RS485 Ethernet port.
Main parameters of power amplifier
| RF input interface: | 2.92-K |
| RF output interface: | BJ320 (waveguide flange port) |
| Power supply interface: | YGD20S1203J |
| Remote control interface: | YWB120E01S1 |
| RF sampling port: | (N-50K) (coupling degree: 45±2dB) |
| power supply: | single-phase AC 220V (rated) |
| Power Consumption: | the whole machine ≤ 3500W; Single power amplifier ≤ 2000W |
| Weight: | overall weight: ≤ 70kg; single power amplifier ≤ 25kg |
| Color: | The main body color conforms to GB/T 3181-2008 GY09 Ice Gray (Fine Texture). The handle surface is matte black, coated with black plastic. |
| Size: | Power Amplifier: 450×330×160mm (excluding handles, connectors, etc.; dimensional tolerance: ±2mm); Controller: ≤1U (19-inch rack) |
Power amplifier echnical indicators
| Operating Frequency: | 27.5GHz～31.0GHz |
| Rated Output Power: | ≥53dBm (including RF switch) |
| Linear Gain: | ≥66dB (at 0dB gain attenuation) (including RF switch) |
| Attenuation Adjustment Range: | 0～20dB, step 0.5dB |
| Amplitude-Frequency Response: | ≤1.2dB (within any 260MHz bandwidth); ≤3.5dB (within any 3500MHz bandwidth) |
| Spurious Output: | ≤-60dBc (referenced to rated output power) |
| Input Voltage Standing Wave Ratio: | ≤ 2.0:1 |
| RF Sampling Output: | Coupling Degree 45±2dB |
| Third-Order Intermodulation: | -25dBc (Total output of two equal carriers is 3dB lower than the rated power output) |
| Power Consumption: | Total system ≤3500W; Single power amplifier ≤2000W |
| Power Input Adaptability: | AC voltage: When the AC supply voltage varies within 220V+10%～-15%, all performance indicators of the equipment remain unaffected; When the AC supply voltage varies within 220V+15%～-20%, the equipment can operate without damage. |
Waveguide coaxial switch technical indicators
| Operating Frequency: | 27.5GHz～31GHz |
| Insertion Loss: | Coaxial ≤0.7dB; Waveguide: ≤0.2dB |
| Voltage Standing Wave Ratio (VSWR): | Coaxial ≤1.5:1; Waveguide: ≤1.2:1 |
| Isolation: | Coaxial ≥50dB; Waveguide: ≥60dB |
| Switching Time: | ≤100ms |
Coupler technical indicators
| Passband Frequency: | 27.5GHz～31GHz |
| Insertion Loss： | ≤ 0.3dB |
| VSWR： | main line: ≤ 1.3; sub-line: ≤ 1.5 |
| coupling degree： | 40±1dB |
| Fluctuation： | ≤ 0.3dB |
| Directivity： | ≥ 18dB |
Environmental Adaptability
| Storage Temperature： | -50 ℃ ～ +70 ℃ (LCD -30 ℃ ～ +60 ℃) |
| Working Temperature | 0 ℃ ～ +45 ℃ (indoor fixed equipment); -40 ℃ ～ +55 ℃ (outdoor equipment) |
