- Patent Title: Non-foster active impedance circuit for electrically small antennas
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Application No.: US14793547Application Date: 2015-07-07
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Publication No.: US09960484B2Publication Date: 2018-05-01
- Inventor: Jia-Chi Samuel Chieh , Lu Xu , Albert Ryu , John D. Rockway , Diana Arceo , Justin A. Church
- Applicant: The United States of America as represented by the Secretary of the Navy
- Applicant Address: US DC Washington
- Assignee: The United States of America as represented by Secretary of the Navy
- Current Assignee: The United States of America as represented by Secretary of the Navy
- Current Assignee Address: US DC Washington
- Agency: SPAWAR Systems Center Pacific
- Agent Kyle Eppele; J. Eric Anderson
- Main IPC: H01Q1/24
- IPC: H01Q1/24 ; H01Q1/36 ; H03H11/00 ; H01Q7/00 ; H01Q21/24 ; H01Q5/35
Abstract:
An antenna comprising: a driven element; an input feed coupled to the driven element wherein the input feed is configured to be connected to a receiver; a non-Foster circuit having a negative impedance, wherein the non-Foster circuit is configured to actively load the antenna at a location on the antenna other than at the input feed; and wherein the antenna fits within an imaginary sphere having a radius a, and wherein the product ka is less than 0.5, where k is a wave number.
Public/Granted literature
- US20150318607A1 Non-Foster Active Impedance Circuit for Electrically Small Antennas Public/Granted day:2015-11-05
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