The rapid development of modern microwave communication technology has put forward more and more high requirements on the specifications like volume, weight, power consumption and phase noise of frequency sources. Miniaturized frequency sources with low phase noise can not only reduce the volume and weight of the communication machine, but also greatly improve the performance of the machine, such as sensitivity, acting distance, etc., is one of the core components of the electronic system. Currently used frequency sources are mostly frequency division phase-locked and crystal multiplied frequency chain program. Frequency division phase-locked is to divide the reference signal and microwave signals, and conduct phase detection at low frequencies, which will introduce the additional noise of the frequency divider and the active phase discriminator; The amplification, amplification, filtering of the crystal multiplied frequency chain of introduced a large amount of power consumption and volume, and the additional noise high frequency multiplier, especially worsened the noise at the far end.
Sampled phase-locked frequency sources (PDROs) use a crystal reference signal to generate a sharp pulse (comb spectrum) signal of the same frequency, which is compared with the microwave signal and outputs an error signal. When the oscillator output frequency is the same as the Nth harmonic frequency of the reference signal, the error signal is filtered by a loop filter to a stable DC voltage, and the oscillator frequency is stabilized at Nfi. This scheme is widely used in demanding applications such as radar, navigation, and measurement because of its features of low power consumption, small size, and excellent phase noise .
The conventional PDRO is manufactured by the PCB process, with most of the internal components in plastic packages and a large size of 57.15 mm × 57.15 mm × 15.75 mm.
Our developed PDRO adopts a hybrid IC process, with a ceramic substrate for the circuit board, most of the components are die chips, sealed through the laser sealing or parallel sewing method. These improved processes have achieved miniaturization and lightweight, as well as the Lowe phase noise of the PDROs, even met the high reliability requirements in aerospace applications. Dimensions: 40mm×40mm×12. 8mm.
Type PDRO: 10GHz
| Item | Parameter | Unit | Specifications |
| 1 | Output Frequency | GHz | 10 |
| 2 | Output Power | dBm | 15 |
| 3 | Phase Noise@100Hz | 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 Noise at Outpu Freq. 10GHz |
| Dimension L*W*H | 40*40*12.8 mm |
About Corech Microwave
Corech Microwave Limited is committed to the design, engineering and marketing of high-performance microwave signal generator, frequency sources, high-power amplifiers, and miniaturized MCM/SIP micro modules, frequency range covers DC~110GHz. Corech holds 25 invention patents and has been certified by GJB9001C-2017 quality management system and Chengdu high-tech enterprise certification.
Established in 2010, Corech now employs more than 120 people, and our R&D team is consisted of more than 40 experienced employees, some of whom have workd in the field for decads. With 3,000 ㎡ of purification workshops, Corech equipped over 600 sets of various microelectronic production, testing, and inspection equipment. We devoted to build a comprehensive and experimental environment for R&D, production, testing, and trial of RF & microwave components/ modules.