Microstrip circuit temperature compensation with stub means
First Claim
1. A method of achieving temperature compensation in a microstrip linear array comprising a transmission line with a plurality of radiating elements extending normal thereto and selectively spaced therealong in which the array is etched on a dielectric substrate with a conductor pattern comprising the step of periodically loading the transmission line, wherein said step of loading comprises coupling to the transmission line stub means for increasing shunt susceptance which will compensate for the decrease in shunt susceptance of the transmission line as temperature increases.
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Accused Products
Abstract
In order to achieve temperature compensation in a microstrip linear array, the array is periodically loaded by means of a plurality of open circuited stubs coupled to the main transmission line through tightly controlled gap dimensions to provide increasing shunt susceptance which compensates for the decease in shunt susceptance of the line as temperature increases.
7 Citations
5 Claims
- 1. A method of achieving temperature compensation in a microstrip linear array comprising a transmission line with a plurality of radiating elements extending normal thereto and selectively spaced therealong in which the array is etched on a dielectric substrate with a conductor pattern comprising the step of periodically loading the transmission line, wherein said step of loading comprises coupling to the transmission line stub means for increasing shunt susceptance which will compensate for the decrease in shunt susceptance of the transmission line as temperature increases.
- 3. In a linear array antenna including a dielectric substrate and a plurality of radiating arrays extending normal to and selectively spaced along a transmission line formed on said substrate, the improvement comprising a plurality of selectively spaced stubs extending normal to and disposed adjacent to said transmission line with a closely controlled gap spacing between each stub and the transmission line, said stubs providing periodic loading of said transmission line to provide temperature compensation.
Specification