Wide-band superconductive Chirp filters
Chirp filters are described that consist of miniature tapped superconductive stripline. The stripline consists of 40-micron-wide niobium thin films in a spiral pattern on 125-micron-thick silicon wafers, and tapping is effected by backward-wave couplers between neighboring lines. Sophisticated fabrication and packaging techniques have led to a now mature technology. Devices with 2.6-GHz bandwidth and time-bandwidth products of 98 are routinely fabricated that exhibit amplitude errors within a few tenths of a decibel and phase errors within a fractions of a degree of theoretical. In pulse-compression tests, matched amplitude-weighted devices yield peak relative side-lobe levels of -32 dB.
- Research Organization:
- Massachusetts Inst. of Tech., Lexington, MA (USA). Lincoln Lab.
- OSTI ID:
- 5419488
- Report Number(s):
- AD-A-209960/4/XAB; JA--6082
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
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71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLITUDES
BACKWARD WAVE TUBES
COMMUNICATIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROMAGNETIC FILTERS
ELECTRON TUBES
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
EQUIPMENT
FILTERS
FLUXMETERS
MEASURING INSTRUMENTS
MICROWAVE EQUIPMENT
MICROWAVE TUBES
PHYSICAL PROPERTIES
PULSE CIRCUITS
PULSE SHAPERS
SIGNAL CONDITIONERS
SQUID DEVICES
SUPERCONDUCTING DEVICES
SUPERCONDUCTIVITY
TESTING