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(en )
1979-09-18
Millimeter wave MIC diplexer
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(en )
1950-07-11
Wave guide system
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1972-05-24
Multiple hybrid circuit
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(en )
1980-07-01
Millimeter wave microstrip triplexer
US4168478A
(en )
1979-09-18
Apparatus for separating electrical signals of different frequencies
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(en )
1957-03-05
Hybrid ring coupling arrangements
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(en )
1952-05-06
Constant resistance pseudohybrid channel branching microwave filters
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1962-01-17
Velocity modulation electron discharge device
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(en )
1977-05-18
Frequency-changer structures
SE317724B
(https= )
1969-11-24
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1981-12-16
Electrical networks for use at high frequencies
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(en )
1964-10-28
Low-noise amplifier
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(en )
1975-05-27
High frequency electrical network with frequency dependent characteristics having a constant input resistance
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1951-10-03
Improvements in or relating to radio frequency mixer circuits
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(en )
1969-06-17
Negative resistance amplifier arrangement and method therefor
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1955-05-04
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2019-12-31
双通带威尔金森功分器
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(en )
1974-06-05
Rejection filter circuit
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(en )
1969-03-25
Waveguide filter
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1970-09-30
Improvements in or relating to electromagnetic wave filters
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(en )
1968-11-20
Improvements in or relating to waveguide filters
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(https= )
1972-09-20
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1972-11-01
Frequency variable directional filter
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1975-12-31
Microwave coupling devices
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(en )
1954-05-19
Ultra-high frequency filter