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Directional Apparatus for use with High-Frequency
Transmission Lines. Tjiske Douma, Sierra Electronic Corp. San Carlos, Calif. US Pat. #. 2734169, Feb 7 1956. Application Jan 12 1953. This is an extension of the directional coupler design given in US pat # 2808566 to include a second frequency-dependent voltage sample for correction of the effect of "negative capacitance" in parallel with the load, i.e., to take account of capacitance on the generator side of the coupler when adjusting the load. |
Cited or related references: USP 2443097
Crosby 1948 USP
2614139 Baxter 1952. USP 2808566 Douma 1957. Analysis of Douma's generator power-factor
correction scheme. |
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