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Phase Locked Dieletric Resonator Oscillators (PLDRO) is a type of oscillator that is used in millimeter-wave communication systems, where phase noise performance is of utmost importance. As wireless communication systems are advancing, the system manufacturers and service providers are all trying to transmit more data within the limited frequency resources available. To do so, they are using more advanced modulation techniques such as 16PSK or 128QAM. Generally, the phase noise of the data modulation index and local oscillator are very closely related. Phase noise of the local oscillator must decrease as the modulation index increases.
Item | Parameter | Unit | Specifications |
1 | Output Frequency | GHz | 10 |
2 | Output Power | dBm | 15 |
3 | Phase Noise@100 Hz | dBc | 92 |
4 | Phase Noise@1KHz | dBc | 120 |
5 | Phase Noise@100KHz | dBc | 125 |
6 | Phase Noise@1MHz | dBc | 138 |
7 | Reference Frequency | MHz | 100 |
8 | 2nd Harmonics | dBc | 15 |
9 | Spurious | dBc | 70 |
10 | Supply Voltage | V / mA | +12V / 280 |
Phase-Locked Dielectric Resonator Oscillators (PLDROs) are advanced frequency sources used in RF and microwave systems where high stability, accuracy, and low phase noise are essential. They combine a dielectric resonator oscillator (DRO) with a phase-locked loop (PLL) circuit to achieve precise frequency control. The dielectric resonator, made of a high-Q ceramic material, ensures excellent frequency stability and minimal noise due to its superior resonant properties.
The PLL circuit locks the output frequency of the DRO to a stable reference signal, providing improved frequency accuracy and stability. This combination makes PLDROs ideal for applications such as radar systems, satellite communication, test and measurement equipment, and high-frequency communication networks.
Key advantages of PLDROs include low phase noise, high frequency stability over temperature variations, and reliable performance in harsh environmental conditions. Their robust design and exceptional frequency control make them indispensable in demanding RF applications requiring precise signal generation.