Receiver or analog modulated signal frequency converter > Frequency modifying or conversion > With specified local oscillator structure or coupling > With particular coupling > Lumped impedance > Patents

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Class Information
Number: 455/320
Name: Telecommunications > Receiver or analog modulated signal frequency converter > Frequency modifying or conversion > With specified local oscillator structure or coupling > With particular coupling > Lumped impedance
Description: Systems where substantially all impedance in the coupling means is concentrated in components, as distinguished from impedance due to stray or distributed effects.

Patents under this class:

Patent Number	Title Of Patent	Date Issued
7403764	RF power delivery diagnostic system	Jul. 22, 2008
7395028	Switching apparatus and satellite antenna switching apparatus	Jul. 1, 2008
7302226	Combined fixed satellite service and mobile platform satellite service communication system	Nov. 27, 2007
5784692	Method and apparatus for generating non-linear variable impedance	Jul. 21, 1998
5390349	Plural transformers with elongated cores	Feb. 14, 1995
4361910	Ground loop injection VHF tuner	Nov. 30, 1982
4184120	Mixing circuit	Jan. 15, 1980
4035732	High dynamic range receiver front end mixer requiring low local oscillator injection power	Jul. 12, 1977
3973204	YIG tuned mixer	Aug. 3, 1976