Title:
TRANSMIT NOISE REDUCER
Document Type and Number:
WIPO Patent Application WO/2016/133577
Kind Code:
A3
Abstract:
A transmit drive circuit with high signal to noise and frequency agility. In one embodiment, a transmit circuit includes a digital to analog converter, an amplifier, and a signal to noise enhancer, the signal to noise enhancer being a nonlinear passive device that attenuates low-power signals while transmitting high power signals with little loss. The signal to noise enhancer may be fabricated as a thin film of yttrium iron garnet (YIG) epitaxially grown on a gadolinium gallium garnet (GGG) substrate, the GGG substrate secured to a microwave transmission line from the input to the output of the signal to noise enhancer, such that the thin film of yttrium iron garnet is close to the transmission line.
Inventors:
SRIVASTAVA TINA P (US)
MORTON MATTHEW A (US)
CANGEME JOHN (US)
MORTON MATTHEW A (US)
CANGEME JOHN (US)
Application Number:
PCT/US2015/063533
Publication Date:
October 06, 2016
Filing Date:
December 02, 2015
Export Citation:
Assignee:
RAYTHEON CO (US)
International Classes:
H04B1/04; H03H2/00
Foreign References:
| US4283692A | 1981-08-11 | |||
| US4488122A | 1984-12-11 |
Attorney, Agent or Firm:
GREEN, Robert, A. et al. (Parker & Hale LLP,P.O. Box 2900, Glendale CA, US)
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