Title :
A FG-CPW single balanced diode mixer
Author :
Bae, J.S. ; Lee, J.C. ; Kim, J.H. ; Lee, B. ; Kim, N.Y.
Author_Institution :
RFIC Res. & Educ. Center, Kwangwoon Univ., Seoul, South Korea
Abstract :
In this paper, an FG-CPW (Finite-Ground Coplanar Waveguide) balanced diode mixer is presented. Frequency bandwidth is selected for a C-band, which is 5.72~5.82 GHz for RF, 5.58~5.68 GHz for LO, and 140 MHz for IF signals. A rat-race hybrid is designed for the accomplishment of single balanced type mixers. A low pass filter (LPF) with CPW structure is used for good conversion loss and unwanted harmonics suppression. When an LO signal with the power of 4 dBm at 5.635 GHz is injected, a conversion loss of 6.2 dB is obtained for the mixer. Also, LO to RF and LO to IF isolation of 30 dB and 40 dB are obtained, respectively. This mixer can be used in wireless LAN applications
Keywords :
coplanar waveguide components; hybrid integrated circuits; intermodulation distortion; low-pass filters; microwave integrated circuits; microwave mixers; waveguide filters; 140 MHz; 5.58 to 5.68 GHz; 5.72 to 5.82 GHz; 6.2 dB; C-band; CPW structure low pass filter; IF signals; IMD3 characteristics; LO signal injection; LO to IF isolation; LO to RF isolation; conversion loss; direct-print method; finite-ground CPW balanced diode mixer; frequency bandwidth; harmonics suppression; rat-race hybrid; wireless LAN; Bandwidth; Circuits; Coplanar waveguides; Diodes; Harmonics suppression; Impedance; Microwave filters; Plugs; Radio frequency; Wireless LAN;
Conference_Titel :
Microwave Conference, 2001. APMC 2001. 2001 Asia-Pacific
Conference_Location :
Taipei
Print_ISBN :
0-7803-7138-0
DOI :
10.1109/APMC.2001.985641
