Direct Carrier Six-Port Modulator Using a Technique to Suppress Carrier Leakage
2011 (English)In: IEEE transactions on microwave theory and techniques, ISSN 0018-9480, E-ISSN 1557-9670, Vol. 59, no 3, 741-747 p.Article in journal (Refereed) Published
This paper presents a direct carrier six-port modulator. To allow arbitrary load impedances to be used and for suppression of carrier leakage, a new circuit architecture with a technique to suppress carrier leakage is proposed and implemented. A theoretical model of the proposed modulator is derived. A prototype modulator utilizing diodes for impedance generation is designed and fabricated for a center frequency of 7.5 GHz for verification of the proposed technique. Measurements show good modulation properties when a 16 quadrature amplitude modulation signal at 100 Msymbol/s is generated, as well as good carrier leakage suppression.
Place, publisher, year, edition, pages
IEEE Institute of Electrical and Electronics , 2011. Vol. 59, no 3, 741-747 p.
Carrier leakage suppression, direct carrier modulator, six-port correlator
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-67308DOI: 10.1109/TMTT.2011.2104972ISI: 000288460500026OAI: oai:DiVA.org:liu-67308DiVA: diva2:409392