This provides extremely fast tuning speed limited primarily by the internal impedance of the user-supplied voltage driver.

Transcription

1 Hyperabrupt Varactor-Tuned Oscillators Technical Data VTO-9 Series Features 32 to 2.3 GHz Coverage Fast Tuning Fast Setting Time +2 VDC Max Tuning Voltage 1 mw Output Power ±2. db Output Flatness Hermetic Thin-film Construction Description HP VTO-9 Hyperabrupt Series oscillators use a silicon transistor chip as a negative resistance oscillator. The oscillation frequency is determined by a silicon hyperabrupt varactor diode acting as a voltage-variable capacitor in a thin-film microstripline resonator. Schematic +15 V This provides extremely fast tuning speed limited primarily by the internal impedance of the user-supplied voltage driver. This family of oscillators is similar to the standard commercial VTO-8 Series except for the incorporation of a silicon hyperabrupt varactor tuning diode. This enables the oscillator to be tuned over the specified range in less than 2 volts rather than 4 to 5 volts in conventional oscillators. The VTO-9 Series VTOs are packaged in TO-8 transistor cans for simple installation in a conventional 5-ohm microstripline PC board. They are ideal for most compact Output Matching RF Output Pin Configuration TO-8V +V 3 TUNE DC CASE lightweight commercial and military equipment designs. Test fixturing is also available for lab bench test applications. See the Test Fixtures for TO-8 Packages section for additional information and outlines. Applications The VTO-9 Series oscillators may be used in the same applications as VTO-8 Series oscillators. The VTO-9 Series is the desired choice for superior linearity and modulation sensitivity requirements. Series Feedback V Tune Tuning Port Capacitor Varactor Resonator

2 2 Electrical and Performance Specifications Guaranteed 25 C Case Temperature ( to +65 C Operating Temperature) Model No. VTO 932 VTO 95 VTO 968 VTO 99 Frequency Range, Min , 9 Power Output Into 5 ohm Load, Min. 1 mw/+1 dbm 1 mw/+ 1 dbm 1 mw/+1 d Bm 1 mw/+1 dbm Power Output 25 C, Max. ±2 db ±2 db ±2 db ±2 db Operating Carrier Temperature Range to +65 C to +65 C to +65 C to +65 C Frequency Drift Over Operating Temperature, Typ Pulling Figure ( db Return Loss), Typ Pushing Figure, +15 VDC Supply, Typ. 5 /V 5 /V 6 /V 6 /V Harmonics, Below Carrier, Typ. db 1 db db db Spurious Output Below Carrier, Min. 6 db 6 db 6 db 6 db Tuning Voltage Low Frequency, Min. VDC VDC VDC 2 VDC High Frequency, Max 2 VDC 2 VDC 2 VDC 18 VDC Maximum Tuning Voltage +2 VDC +2 VDC +2 VDC +2 VDC Tuning Port Capacitance, Nom. 2 pf 2 pf 19 pf 19 pf Phase Noise, Single Sideband, 1 Hz Bandwidth, Typ. 5 khz From Carrier 95 dbc/hz 1 dbc/hz 95 dbc/hz 1 dbc/hz 1 khz From Carrier 13 dbc/hz 18 dbc/hz 13 dbc/hz 18 dbc/hz Input Power, ±1% Regulaltion Voltage, Nom. +15 VDC +15 VDC +15 VDC +15 VDC Current, Max. 5 ma 5 ma 5 ma 5 ma Case Style TO 8V TO 8V TO 8V TO 8V Electrical and Performance Specifications Guaranteed 25 C Case Temperature ( to +65 C Operating Temperature) Model No. VTO 9 VTO 913 Frequency Range, Min Power Output Into 5 ohm load, Min. 1 mw/+1 dbm 1 mw/+1 dbm Power Output 25 C, Max. ±2 db ±1.5 db Operating Case Temperature Range to +65 C to +65 C Frequency Drift Over Operating Temperature, Typ Pulling Figure ( db Return Loss), Typ Pushing Figure, +15 VDC Supply, Typ. 1 /V 1 /V Harmonics, Below Carrier, Typ. db 15 db Spurious Output Below Carrier, Min. 6 db 6 db Tuning Voltage Low Frequency 3±1 VDC 2 VDC Min. High Frequency ±2 VDC 2 VDC Max. Maximum Tuning Voltage +2 VDC + 2 VDC Tuning Port Capacitance, Nom. 1 pf 1 pf Phase Noise, Single Sideband, 1 Hz, Bandwidth, Typ. 5 khz From Carrier 97 dbc/hz 97 dbc/hz 1 khz From Carrier 15 dbc/hz 15 dbc/hz Input Power, ±1% Regulation Voltage,Nom. +15VDC +15VDC Current, Max. 5 ma 5 ma Case Style TO 8V TO 8V

3 3 Typical 25ºC Case Temperature OUTPUT Figure 1. VTO-932 Power Output, Frequency and Modulation Sensitivity vs. Tuning Voltage K 1K 1K 1M 1M FOURIER Hz Figure 2. VTO-932 Normalized Phase 64 S.S.B. Power Spectral Density Figure 3. VTO-95 Power Output, Frequency OUTPUT OUTPUT Figure 5. VTO-968 Power Output, Frequency and Modulation Sensitivity vs. Tuning Voltage K 1K 1K 1M 1M FOURIER Hz Figure 4. VTO-95 Normalized Phase 1 S.S.B. Power Spectral Density K 1K 1K 1M 1M FOURIER Hz Figure 6. VTO-968 Normalized Phase 136 S.S.B. Power Spectral Density.

4 4 Typical 25ºC Case Temperature (continued) Figure 7. VTO-99 Power Output, Frequency OUTPUT OUTPUT Figure 9. VTO-9 Power Output, Frequency K 1K 1K 1M 1M FOURIER Hz Figure 8. VTO-99 1 Single Sideband Phase Noise K 1K 1K 1M 1M FOURIER Hz Figure 1. VTO-9 Normalized Phase 2 S.S.B. Power Spectral Density OUTPUT Figure 11. VTO-913 Power Output, Frequency K 1K 1K 1M 1M FOURIER Hz Figure. VTO-913 Normalized Phase 23 S.S.B. Power Spectral Density.

5 5 TO-8V Case Drawing.5 DIA.45 DIA GLASS RING.6 DIA (3X).22 MIN V TUNE V + CASE APPROXIMATE WEIGHT 1.7 GRAMS NOTES (UNLESS OTHERWISE SPECIFIED): 1. DIMENSIONS ARE SPECIFIED IN INCHES 2. TOLERANCES: xx ±.2 xxx ±.1 Test Fixtures for TO-8 Packages (TF 81/82) Oscillators (VTO) Features DC to 11 GHz Frequency Range Connectorized Tuning Port and RF Output Easy to Test Package Repeatable Performance Applications Engineering Characterization Incoming Inspection System Prototype Demonstration of Device Performance Description To facilitate testing and prototyping of products in the TO-8V package, a series of test fixtures is available. Designated the HP TF Series test fixtures, they feature rugged construction for precise, repeatable measurements. The TF Series test fixtures come supplied with mounting hardware to ensure excellent ground contact between the oscillator package and test fixture. This assures excellent contact between package pins and test fixture connector pins for reliable testing. The device under test is aligned according to Figure 13, and pushed fully down onto the fixture. The steel mounting ring clamp is placed over the device under test and secured by machine screws prior to testing. Orientation of pins can be verified by comparison with part (c) of Figure 13. It is recommended that both machine screws be used to fasten the ring clamp. Screws should be tightened down snugly with a jewelers type screwdriver. For different connector options check the table in Figure 13 to identify the correct part numbers. It should be noted that some output power variation may be seen, from unit data, at frequencies above 8 GHz. This is due to small differences in lengths of test fixture RF output connector pins.

6 VTO IN PLACE.53 TUNING CONNECTOR INPUT CONNECTOR.35 + TUNING PIN TUNING DC PIN (a) (b) (c) V DC TAB ON PACKAGE SERIES TF-81 TF-82 CONNECTOR OPTIONS TUNING SMA SMA RF OUTPUT SMA E N + TUNING CASE.15 +DC (Bottom View) Figure 13. TO-8 Test Fixture. For technical assistance or the location of your nearest Hewlett-Packard sales office, distributor or representative call: Americas/Canada: or Far East/Australasia: Call your local HP sales office. Japan: (81 3) Europe: Call your local HP sales office. Data subject to change. Copyright 1997 Hewlett-Packard Co. Obsoletes E Printed in U.S.A E (/97)