Title :
A high-linearity 100-element diode grid mixer
Author :
Oliveira, Mauricio ; Cheung, Conan Dart-Mao ; Al-Zayed, Ayman ; Chio, Iok-Fai Frank ; Swisher, Robert R. ; Lecuyer, Frederic ; DeLisio, Michael P.
Author_Institution :
Oceanit, Honolulu, HI, USA
fDate :
5/1/2002 12:00:00 AM
Abstract :
Grid-mixer arrays can achieve high linearity and dynamic range through quasi-optical power combining. We present a 100-element single-ended diode grid mixer operating at 2.45 GHz. Each element incorporates two diodes in series. We measure an input third-order intercept of 11 W (40.5 dBm), and output third-order intercept of 3.4 W (35.4 dBm), and an associated conversion loss of 5.1 dB. The power-handling capability of the array is 100 times larger than that of a microstrip mixer using a single element. The local oscillator (LO) drive requirement for the entire array is 1.4 W (31.6 dBm). The angular dependence of the array´s IF power is also presented and is in agreement with theory
Keywords :
Schottky diode mixers; UHF mixers; UHF oscillators; arrays; power combiners; 1.4 W; 11 W; 2.45 GHz; 3.4 W; 5.1 dB; IF power; LO drive requirement; active arrays; angular dependence; conversion loss; grid-mixer arrays; local oscillator; power-handling capability; quasi-optical power combining; single-ended diode grid mixer; spatial power combining; Couplers; Dynamic range; Impedance matching; Linearity; Loss measurement; Microstrip antenna arrays; Radio frequency; Schottky diodes; Transformers; Wireless sensor networks;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2002.1011237
