DocumentCode
1993231
Title
A 9 Bit DIFM Receiver for Ka-Band
Author
Gibson, P.J.
Author_Institution
Phillips Research Laboratories, Redhill, Surrey RH1 5HA, UK.
fYear
1985
fDate
9-13 Sept. 1985
Firstpage
599
Lastpage
604
Abstract
A digital instantaneous frequency measuring receiver (DIFM) has been built at Ka-band with a frequency resolution of 25 MHz (9 bit) using a five discriminator binary system digitised to 11.25 degrees. Absolute frequency accuracy is dispersion limited to 100 MHz. A simplified system block diagram is shown in fig. 1. Advanced technology is used in each of the three sections to obtain a compact unit with a performance limit set by the inherent frequency dispersion in the microstrip discriminator circuitry. This paper describes the design. construction and performance of the complete DIFM receiver with special attention given to the CAD techniques based on circuit modelling to allow microwave discriminator design to be carried out under conditions of severe frequency dispersion.
Keywords
Circuit analysis computing; Couplers; Coupling circuits; Delay lines; Design automation; Dielectric constant; Frequency measurement; Microstrip; Microwave circuits; Strips;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Conference, 1985. 15th European
Conference_Location
Paris, France
Type
conf
DOI
10.1109/EUMA.1985.333543
Filename
4132231
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