- Additional Authors
- Description
- 1 microfiche (ii, 40 unnumbered pages) : negative, illustrations; 11 x 15 cm.
- Summary
- The primary purpose of the program was to establish techniques necessary to fabricate a high performance S-band microwave signal source using state-of-the-art SBAW oscillator technology. The objectives of Phase II were: aging study of 1.072 GHz SBAW delay line oscillators; development of 2.143 GHz SBAW delay lines; construction and characterization of 2.143 GHz SBAW oscillators; assessment of the compatibility and performance improvement of SBAW devices in oscillator circuits presently using SAW devices; and, demonstration of a cost-effective method to produce SBAW delay line from the same mask, but operating at different frequencies. Two design approaches were implemented. The third harmonic transducer on 36 deg rotated Y-cut quartz proved to be the most useful design, whereas the fifth harmonic transducer on -50.5 deg rotated Y-cut quartz suffered from high insertion loss and poor sidelobe rejection. The construction and characterization of the 2 GHz SBAW oscillator are described. Phase noise, frequency dependence on temperature, and 6-month aging were measured. Some SAW and SBAW oscillators were compared as were both the 1 and 2 GHz oscillators. The 2 GHz SBAW oscillator showed significant improvement in phase noise and temperature stability over the 2 GHz SAW oscillator developed in previous NASA programs. A technique to produce SBAW delay lines of different frequencies from a single mask is examined. The delay lines were incorporated into oscillator circuits to demonstrate the ability to select the frequency output of the SBAW oscillator.
- Series Statement
- NASA-CR ; 175153
- Uniform Title
- NASA contractor report ; NASA CR-175153.
- Alternative Title
- S-band shallow bulk acoustic wave microwave source
- Subject
- Note
- Title from transmittal letter subject line.
- "03 November 1983."
- Type of Report (note)
- Funding (note)
- Sponsored by the National Aeronautics & Space Administration, Goddard Space Flight Center
- Call Number
- GPO Microfiche NAS 1.26:175153
- OCLC
- marcive243708845
- Title
S-band SBAW microwave source, phase II.
- Publisher
Redondo Beach, Californiaorniaornia : TRW Electronic Systems Group ; Greenbelt, Maryland : National Aeronautics & Space Administration, Goddard Space Flight Center, 03 November 1983.
- Type of Content
text
- Type of Medium
microform
- Type of Carrier
microfiche
- Series
NASA-CR ; 175153
NASA contractor report ; NASA CR-175153.
- Type Of Report
Final report.
- Funding
Sponsored by the National Aeronautics & Space Administration, Goddard Space Flight Center NAS5-26658
- Indexed Term
Bulk acoustic wave devices - Microwaves - Crystal oscillators - Ultrahigh frequencies - Acoustic delay lines - Aging (Materials) - Circuits - Fabrication - Thermal stability
- Added Author
TRW Electronic Systems Group, issuing body.
Goddard Space Flight Center, sponsoring body.
United States. National Aeronautics and Space Administration.
- Other Form:
Online version: S-band SBAW microwave source, Phase 2 (OCoLC)891196502
- Gpo Item No.
0830-H-14 (MF)
- Sudoc No.
NAS 1.26:175153