Title :
A 20 GHz active receive slot array
Author :
Tulintseff, A.N. ; Lee, I. ; Sukamto, L. ; Chew, W.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Abstract :
A 20 GHz active receive slot array has been developed for operation in the downlink frequency band of NASA´s Advanced Communication Technology Satellite (ACTS) for the ACTS Mobile Terminal (AMT) project. The AMT is used to demonstrate voice and data communication between a mobile terminal and a fixed terminal via the ACTS satellite. The active antenna consists of an array of fourteen linear series-fed-type microstrip slot arrays, fourteen packaged monolithic microwave integrated circuit (MMIC) low noise amplifier (LNA) submodules connected at each subarray output, a 14-way Wilkinson-type power divider, and a final additional LNA submodule used as a driver amplifier. The active receive array was designed to achieve the receive sensitivity requirement by placing the LNAs as close as possible to the antenna subarrays, minimizing the losses that occur in front of the amplifiers. The additional driver amplifier further minimizes the system G/T sensitivity to losses that follow the antenna.<>
Keywords :
MMIC; data communication; land mobile radio; mobile antennas; mobile satellite communication; modules; power dividers; receiving antennas; satellite antennas; slot antenna arrays; voice communication; 14-way Wilkinson-type power divider; 20 GHz; ACTS Mobile Terminal project; Advanced Communication Technology Satellite; G/T sensitivity; LNA submodules; MMIC; NASA; SHF; active receive slot array; antenna subarrays; data communication; downlink frequency band; driver amplifier; linear series-fed arrays; losses; low noise amplifier; microstrip slot arrays; monolithic microwave integrated circuit; receive sensitivity; voice communication; Artificial satellites; Driver circuits; Integrated circuit noise; Linear antenna arrays; Low-noise amplifiers; MMICs; Microstrip antenna arrays; Microstrip antennas; Microwave amplifiers; Microwave antenna arrays;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1994. AP-S. Digest
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-7803-2009-3
DOI :
10.1109/APS.1994.407963
