Title :
A broadband upconverter IC
Author :
Neilson, D. ; Allen, B. ; Kintis, M. ; Hoppe, M. ; Maas, S.A.
Author_Institution :
TRW, Redondo Beach, CA, USA
Abstract :
The authors describe the design and performance of a single-chip upconverter IC consisting of a doubly balanced dual-gate FET mixer, a four-stage local oscillator (LO) amplifier, and a single-stage IF amplifier. Due to a novel mixer topology, the input passband of the converter extended from DC to 5 GHz, the LO frequency range was 8 GHz to 16 GHz, and the IF output frequency range was 8 to 10 GHz. The primary design goals for this upconverter were a high third-order intermodulation intercept point (IP/sub 3/) and good spurious-response rejection. Advanced FET models were used to optimize the circuit´s intercept points. The converter exhibited an IP/sub 3/ of 23.5 dBm across most of the band; second-order intercept points (IP/sub 2/) for spurious responses were greater than +40 dBm.<>
Keywords :
MMIC; field effect integrated circuits; frequency convertors; mixers (circuits); 0 to 16 GHz; MESFET; broadband upconverter; dual-gate FET mixer; four stage LO amplifier; intermodulation intercept point; local oscillator; single-chip upconverter; single-stage IF amplifier; spurious-response rejection; third order IP/sub 3/; Broadband amplifiers; Couplers; FET integrated circuits; Frequency conversion; High power amplifiers; Impedance matching; MMICs; Microwave FETs; Mixers; Radio frequency;
Conference_Titel :
Microwave and Millimeter-Wave Monolithic Circuits Symposium, 1992. Digest of Papers, IEEE 1992
Conference_Location :
Albuquerque, NM, USA
Print_ISBN :
0-7803-0677-5
DOI :
10.1109/MCS.1992.186026
