Reflection phase shifter utilizing microstrip directional coupler
Abstract
Abstract DESCRIBED IS A REFLECTIVE PHASE SHIFTER, UTILIZING MICROSTRIP TRANSMISSION LINES, WHICH ALLOWS FOR A CONTINUOUSLY VARIABLE DIFFERENTIAL PHASE SHIFT OVER A GIVEN RANGE. THE BASIC ELEMENTS OF THE DEVICE ARE (1) A MICROSTRIP QUARTERWAVELENGTH PARALLEL-LINE DIRECTIONAL COUPLER FORMED ON A SEMICONDUCTIVE SUBSTRATE AND HAVING THREE OF ITS FOUR ARMS OF SPECIFIC LENGTH AND EITHER OPEN-ENDED OR TERMINATED IN SHORTS, (2) A DISTRIBUTED P-N JUNCTION FORMED IN THE SEMICONDUCTIVE SUBSTRATE IN THE COUPLING REGION BETWEEN THE TWO PARALLEL MICROSTRIPS OF THE COUPLER AND (3) AN EXTERNAL DIRECT CURRENT VOLTAGE SOURCE FOR BIASING THE P-N JUNCTION TO CHANGE THE COUPLING CAPACITANCE BETWEEN THE PARALLEL MICROSTRIPS.
Inventors
- 👤 Robert Q Macleay
- 👤 Lawrence R Whicker
Bibliographic Details
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