Title :
Design of a 250 Mbit/s biphase modulator
Author :
Whitehead, N.W.M.
Author_Institution :
Rutherford Appleton Laboratory, Didcot, UK
Abstract :
The letter explains the design of an accurate biphase modulator, which uses an ECLIII buffer and an RC network to interface between a baseband digital signal source and a double balanced mixer with two complementary IF ports. Under test, a modulation rate of at least 300 bit/s was achieved, using a carrier frequency up to 1 GHz.
Keywords :
emitter-coupled logic; modulators; phase shift keying; 250 Mbit/s biphase modulator; ECL buffer; ECLIII buffer; R C network; accurate biphase modulator; baseband digital signal source; carrier frequency up to 1 GHz; complementary IF ports; design; double balanced mixer; modulation rate;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19860237
