Title :
A new compact 90/spl deg/ IF combiner
Author :
Tsai, M.C. ; Tajima, Y.
Author_Institution :
Raytheon Co., Lexington, MA, USA
Abstract :
A new compact 90/spl deg/ IF combiner has been developed for wireless communication applications. Using a simple R-C network, a differential amplifier, and IF amplifiers, an IF combiner has been designed and fabricated. Over 30 dB of gain with phase difference better than 10/spl deg/ from 90/spl deg/ and amplitude balance 2.5 dB from 50 MHz to 250 MHz has been realized in a chip area of 1/spl times/0.7 mm/sup 2/.<>
Keywords :
MMIC; differential amplifiers; impedance matching; intermediate-frequency amplifiers; lumped parameter networks; microwave amplifiers; waveguide components; IF amplifiers; amplitude balance; chip area; compact 90/spl deg/ IF combiner; differential amplifier; phase difference; simple R-C network,; wireless communication applications; Bandwidth; Circuit synthesis; FETs; Impedance matching; Microwave circuits; Millimeter wave circuits; Voltage;
Conference_Titel :
Microwave and Millimeter-Wave Monolithic Circuits Symposium, 1994. Digest of Papers., IEEE 1994
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-7803-1418-2
DOI :
10.1109/MCS.1994.332135
