Low-noise 86–88-GHz traveling wave maser
- 1 December 1979
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 35 (11) , 833-835
- https://doi.org/10.1063/1.90996
Abstract
A traveling wave maser using iron doped rutile (Fe3+: TiO2) has been developed for a signal frequency of 86–88 GHz. The 3‐dB bandwidth is 40–50 MHz for an electronic gain of 36 dB and a net maser gain of 15–20 dB. Hexagonal aluminum substituted strontium ferrite was used for isolation. A unique overmoded ridge guide structure is used to match pump and signal power to the active material from 30 to 120 GHz. The maser noise temperature has been measured as TMaser =20±10 K.Keywords
This publication has 8 references indexed in Scilit:
- Low-noise 115-GHz mixing in superconducting oxide-barrier tunnel junctionsApplied Physics Letters, 1979
- A Reflected-Wave Ruby Maser with K-Band Tuning Range and Large Instantaneous BandwidthIEEE Transactions on Microwave Theory and Techniques, 1979
- Cryogenic Millimeter-Wave Receiver Using Molecular Beam Epitaxy DiodesIEEE Transactions on Microwave Theory and Techniques, 1978
- Low-noise Josephson mixers at 115 GHz using recyclable point contactsApplied Physics Letters, 1978
- Millimeter wave superconducting devicesAIP Conference Proceedings, 1978
- A Traveling-Wave Maser Amplifier for 85-90 GHz Using a Slot-Fed Image-Guide Slow-Wave CircuitIEEE Transactions on Microwave Theory and Techniques, 1976
- Traveling-Wave Masers for Radio Astronomy in the Frequency Range 20-40 GHzIEEE Transactions on Microwave Theory and Techniques, 1976
- K-Band Traveling-Wave Maser Using RubyIEEE Transactions on Microwave Theory and Techniques, 1976