Title :
A 122 GHz Sub-Harmonic Mixer With a Modified APDP Topology for IC Integration
Author :
Sun, Yaoming ; Scheytt, Christoph J.
Author_Institution :
IHP, Frankfurt (Oder), Germany
Abstract :
This letter presents a modified passive subharmonic mixer (SHM) topology based on an anti-parallel-diode-pair (APDP). It features a differential intermediate frequency output facilitating IC integration and improving common-mode noise rejection. An example 122 GHz SHM has been designed and tested in a 0.13 μm SiGe BiCMOS technology for a 122 GHz radar IC. SiGe HBT transistors have been diode-connected to form the APDP. The example SHM exhibits a conversion loss of 8 dB with a 5 dBm LO pumping power. The measured bandwidth extends from 117 to 124 GHz, adequately covering the 122-123 GHz ISM band, while the input 1 dB compression point and noise figure were measured to be -5 dBm and 8.5 dB respectively. Due to its superior 1/f noise performance and high linearity, the mixer is especially well suited to zero intermediate frequency radars.
Keywords :
1/f noise; BiCMOS integrated circuits; Ge-Si alloys; field effect MIMIC; heterojunction bipolar transistors; integrated circuit design; integrated circuit testing; millimetre wave mixers; network topology; passive networks; radar; 1/f noise performance; APDP topology; BiCMOS technology; HBT transistors; IC integration; ISM band; LO pumping power; SHM design; SHM testing; SiGe; antiparallel diode-pair; common-mode noise rejection; compression point; conversion loss; differential intermediate frequency output; frequency 122 GHz; modified passive subharmonic mixer topology; noise figure; radar IC; zero intermediate frequency radar; 1f noise; Frequency measurement; Millimeter wave integrated circuits; Noise measurement; Radio frequency; Schottky diodes; Topology; 1/f noise; 122 GHz radar; Anti-parallel diode pair (APDP); millimeter wave integrated circuits; sub-harmonic mixer (SHM); zero intermediate frequency (ZIF);
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2011.2170830
