resotechinc.com, dielectric resonator oscillators, phase-locked dielectric resonator oscillators |
Phase-Locked |
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The design philosophy behind RESOTECH's Phase-Locked Dielectric Resonator Oscillators (PLDROs) is to provide its customers with a line of compact, lightweight, and low-cost units which offer state-of-the-art phase noise performance and the lowest power consumption available in the industry. These units operate at frequencies from 4.0 to 14 GHz over the full -54 to +85 C temperature range and offer reverse polarity protection. These outstanding features are the result of incorporating RESOTECH's superior electrically tuned fundamental frequency DRO together with extremely efficient phase-lock circuitry into a single housing. Internal drop-in Isolator at the DRO output provides low pulling and low power consumption. The resultant high stability obtained by phase-locking a crystal reference to the fundamental microwave oscillator makes these units ideally suited for communication system applications and other high performance uses. Phase noise levels at offsets up to 100 kHz from the carrier are determined by the crystal reference while beyond 100 kHz the phase noise is primarily that of the fundamental DRO itself. The key to the phase-lock circuitry is RESOTECH's high sensitivity sampling phase detector which lowers power consumption and reduces component count and unit size. Soft substrates, surface mount technology, and hermetically sealed components are used throughout the assembly to facilitate large volume production and insure highly reliable operation. Another benefit of this design approach is that manufacturing procedures are simplified, allowing RESOTECH to offer excellent delivery schedules. RESOTECH welcomes any custom design request and can provide the necessary expertise, experience, and fast turnaround to meet your special requirements. |
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4.0 to 14 GHz Standard Model PLDROsGuaranteed Specifications over -30 to +70 C. |
Operating Frequency Mechanical Tuning Range Output Power Output Power Variation Over 0 to 60°C Over -30 to +70°C Load VSWR (Max.) Phase Noise @ 10 GHz (Also see Figure 1) Reference Input Frequency Reference Input Power 2nd Harmonic Spurious Frequency Stability Power Requirements Voltage Current Package Size (Also see Figures 2,3) 5.0-7.9 GHz 8.0-14 GHz Package Weight 5.0-7.9 GHz 8.0-14 GHz Finish |
4.0-14 2-3% +14 ±0.6 +1.0/-1.3 3:1 -110 10, 40-130 0±4 -20 -80 Same as Ext. Reference +15±1 or +12±1 75 2.52x2.34x0.60 2.25x2.25x0.50 120 90 Nickel Plated |
GHz Typ. dBm Min. dB Max. dB Max. dBc/Hz @ 100 kHz MHz dBm dBc dBc VDC mA Typ. Inches Inches g Typ. g Typ. |
Notes/Options:
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ORDERING INFORMATION |
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Examples: | |
1. PLDRO-11900-100I | 11.9 GHz output, 100 MHz reference |
2. PLDRO-10672-116I | 10.672 GHz output, 116 MHz reference |
3. PLDRO-5695-67IA | 5.695 GHz output, 67 MHz reference, Lock Alarm |
4. PLDRO-7000-0 | 7 GHz output, Internal Crystal Oscillator |
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Figure 1. Phase Noise |
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Note: Phase noise less than 100 kHz from the carrier is essentially determined by the external crystal reference oscillator according to the equation where N is the output frequency ÷ reference, or the multiplication factor. |
Installation Information |
Units are set at the factory for proper operation according to the ordered reference frequency. Significant changes in this parameter, such as a different crystal frequency or different multiplication factor, will require adjustment of the DRO tuning element. While monitoring the phase voltage (ØV), carefully adjust the tuning element housing until a steady state DC Voltage is present (a square wave search voltage indicates the unit is out of lock). Finally, slowly turn the piston/rotor of the tuning element until approximately 5.5-6.0 volts appears at the phase voltage (ØV) terminal. |
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Package Outline Drawings (inches) |
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3355 E. Tonto Ln. Phoenix, AZ 85050-3982 U.S.A Tel: (480) 483-8400 Fax: (480) 483-2504 |
resotechinc.com, dielectric resonator oscillators, phase-locked dielectric resonator oscillators |