TY - GEN
T1 - An indirect impedance characterization method for monolithic THz antennas
AU - Topalli, Kagan
AU - Trichopoulos, Georgios C.
AU - Sertel, Kubilay
PY - 2011/11/1
Y1 - 2011/11/1
N2 - We present an impedance characterization method for THz antennas using coplanar probe measurements. The antenna structure, which is typically monolithically integrated with detector diodes, is represented as a two-port network. The impedance seen by the diode can be analytically extracted using reflection coefficient measurements from the other remote location of the antenna. The diode port is replaced with three terminations (short, open, and a resistive load) and measured S11 data is used to compute the impedance seen by the diode. The results show that the approach gives an accurate estimate of the antenna impedance except when the electrical length between two ports is near a multiple of one-half wavelength.
AB - We present an impedance characterization method for THz antennas using coplanar probe measurements. The antenna structure, which is typically monolithically integrated with detector diodes, is represented as a two-port network. The impedance seen by the diode can be analytically extracted using reflection coefficient measurements from the other remote location of the antenna. The diode port is replaced with three terminations (short, open, and a resistive load) and measured S11 data is used to compute the impedance seen by the diode. The results show that the approach gives an accurate estimate of the antenna impedance except when the electrical length between two ports is near a multiple of one-half wavelength.
KW - Antenna measurements
KW - Terahertz detectors
KW - focal plane arrays
KW - scattering parameters
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U2 - 10.1109/APS.2011.5996866
DO - 10.1109/APS.2011.5996866
M3 - Conference contribution
AN - SCOPUS:80055004047
SN - 9781424495634
T3 - IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
SP - 1882
EP - 1884
BT - 2011 IEEE International Symposium on Antennas and Propagation - Proceedings
T2 - 2011 IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting, APSURSI 2011
Y2 - 3 July 2011 through 8 July 2011
ER -