This paper presents two different planar doubler designs for MM-wave applications. The doublers are fabricated using two Schottky varactor diodes in series for high power operation. The high-Q design (Q=6) results in a conversion loss of 6.4 dB at an output frequency of 72-73 GHz. The low-Q design (Q=1.6) results in a conversion loss of 9.6/spl plusmn/0.7 dB from 64-78 GHz at -2 V bias, and delivers 71 mW at 74 GHz for an input power of 490 mW (conversion loss of 8.4 dB, at optimal bias of -7 V). The output power shows no sign of saturation, and is limited to 71 mW due to the input source power. The results are quoted "on-chip" and are state of the art for MM-wave planar multipliers. The application areas are in automotive collision avoidance radars and MM-wave communication systems.
[1]
N. Jain,et al.
Design of a DC-to-90-GHz resistive load
,
1999
.
[2]
Richard Bradley,et al.
A high-power fixed-tuned millimeter-wave balanced frequency doubler
,
1999
.
[3]
S. Chen,et al.
Rigorous analysis and design of a high-performance 94 GHz MMIC doubler
,
1993
.
[4]
Linda P. B. Katehi,et al.
W-band finite ground coplanar monolithic multipliers
,
1999
.
[5]
Peter H. Siegel,et al.
Advances in Submillimeter Wave Semiconductor-Based Device Designs and Processes at JPL
,
1997
.
[6]
Peter H. Siegel,et al.
Development of millimeter- and submillimeter-wave local oscillator circuits for a space telescope
,
1999,
Optics & Photonics.