TY - JOUR
T1 - Compact KA-band one-port vector reflectometer using a wideband electronically controlled phase shifter
AU - Fallahpour, Mojtaba
AU - Baumgartner, Mark A.
AU - Kothari, Arpit
AU - Ghasr, Mohammad Tayeb
AU - Pommerenke, David
AU - Zoughi, Reza
PY - 2012/6/19
Y1 - 2012/6/19
N2 - In this paper, the design and implementation of a compact one-port Ka-band (26.5-40 GHz) vector reflectometer or network analyzer (VNA), operating in full Ka-band frequency range, are presented. The design follows that of a recently developed VNA but with the goal of producing a wideband version. The most critical component of this design is a wideband electronically controlled phase shifter, designed using nonuniformly spaced p-i-n diode-loaded slots incorporated in the broad wall of a rectangular waveguide. Nonuniform placement of the slots is shown to significantly reduce unwanted resonances within the operating bandwidth. Also, the new design provides the possibility of using a more accurate three-port $S$ -parameter characterization instead of the previously used two-port approach. The design foundation and measurement results are presented.
AB - In this paper, the design and implementation of a compact one-port Ka-band (26.5-40 GHz) vector reflectometer or network analyzer (VNA), operating in full Ka-band frequency range, are presented. The design follows that of a recently developed VNA but with the goal of producing a wideband version. The most critical component of this design is a wideband electronically controlled phase shifter, designed using nonuniformly spaced p-i-n diode-loaded slots incorporated in the broad wall of a rectangular waveguide. Nonuniform placement of the slots is shown to significantly reduce unwanted resonances within the operating bandwidth. Also, the new design provides the possibility of using a more accurate three-port $S$ -parameter characterization instead of the previously used two-port approach. The design foundation and measurement results are presented.
KW - Microwave measurements
KW - millimeter-wave imaging
KW - millimeter-wave measurements
KW - phase shifters
KW - reflectometry
UR - http://www.scopus.com/inward/record.url?scp=84866504182&partnerID=8YFLogxK
U2 - 10.1109/TIM.2012.2196389
DO - 10.1109/TIM.2012.2196389
M3 - Article
AN - SCOPUS:84866504182
SN - 0018-9456
VL - 61
SP - 2807
EP - 2816
JO - IEEE Transactions on Instrumentation and Measurement
JF - IEEE Transactions on Instrumentation and Measurement
IS - 10
M1 - 6216410
ER -