Title :
Balanced FET up-converter for 6 GHz, 64-QAM radio
Author :
Bura, P. ; Gelerman, D.
Author_Institution :
Northern Telecom, Montreal, Que., Canada
Abstract :
A 70-MHz to 6-GHz balanced FET converter is described that has a third-order intercept point of 26 dBm, a conversion gain of 3 dB, and 33 dB of local oscillator suppression. Its highly linear performance makes it suitable for 64-QAM radio. Bit error rates (BERs) lower than 10/sup -27/ were measured at the 2.7 dBm RMS (64-QAM) output level. The upconverter shows two advantages compared with a balanced diode converter: (1) a 2-dB intermediate frequency to 6 GHz gain compared with a 6-dB loss; and (2) a higher output level for the same linearity requirement.<>
Keywords :
digital communication systems; frequency convertors; microwave links; radio equipment; solid-state microwave circuits; 3 dB; 70 MHz to 6 GHz; BER; balanced FET converter; conversion gain; digital transmission; linear performance; local oscillator suppression; microwave links; Bit error rate; Circuit faults; Error analysis; FETs; Gain; Inductors; Power generation; Radio frequency; Telecommunications; Testing;
Conference_Titel :
Microwave Symposium Digest, 1988., IEEE MTT-S International
Conference_Location :
New York, NY, USA
DOI :
10.1109/MWSYM.1988.22186
