- As described in [Bale et al., 2008], the electrical design of the STEREO/Waves antenna and preamplifier circuit is represented as the following figure (see sect. 3):

with the following values for the circuit elements:Name Component Value Note Sheath resistance *R*_{s}~ 0.75MΩ Antenna capacitance *C*_{s}~ 40pF Base resistance *R*_{b}~ 1-10MΩ Base capacitance *C*_{b}~ 60pF *C*_{1}100pF *C*_{2}100pF *R*_{1}100Ω *R*_{2}33MΩ *R*_{3}33MΩ *R*_{4}150MΩ Name Component Value Note Cable capacitance *C*_{c}~ 13pF Base capacitance *C*_{b}~ 32pF Preamplifier capacitance *C*_{pa}~ 22pF Stray capacitance *C*_{s}~ 67pF *Used by [Oswald et al., 2009].**C*=_{s}*C*+_{b}*C*+_{c}*C*. Finally, this study also mention a base capacitance used for the rheometric analyses (see sect. 6.1):_{pa}Name Component Value Note Base capacitance *C*_{b}90pF - A second study [Eastwood et al., 2009] gives the value of the stray capacitance for monopoles and dipoles, using the galactic noise:
Name Component Value Note Stray capacitance (monopole) *C*_{s,m}~ 80-90pF *Used by [Macher et al., 2007].*Stray capacitance (dipole) *C*_{s,d}~ 40pF - A third study [Zouganelis et al., 2010] gives the value of the base capacitance of the h
_{XY}dipole, using the shot noise:Name Component Value Note Base capacitance (dipole) *C*_{b}32pF ± 4pF

STEREO/Waves antenna Quick Facts

Electrical design

Receiver Noise

- An interesting byproduct of the calibration proposed by [Zaslavsky et al., 2011] is the receiver noise level (V
^{2}_{noise}).

Spacecraft DF-mode (1) Antenna V ^{2}_{noise}(dB)STEREO-A 31 h _{XY}-160.9 STEREO-A 31 h _{Z}-162.8 STEREO-A 13 h _{X}-161.8 STEREO-A 13 h _{YZ}-161.6 STEREO-A 11 h _{X}-163.0 STEREO-A 11 h _{Z}-162.7 STEREO-A 12 h _{X}-163.1 STEREO-A 12 h _{Y}-162.4 STEREO-A 21 h _{Y}-163.4 STEREO-A 21 h _{Z}-162.8 STEREO-B 31 h _{XY}-162.4 STEREO-B 31 h _{Z}-165.9 STEREO-B 13 h _{X}-163.2 STEREO-B 13 h _{YZ}-164.2 STEREO-B 11 h _{X}-163.4 STEREO-B 11 h _{Z}-165.8 STEREO-B 12 h _{X}-163.4 STEREO-B 12 h _{Y}-166.4 STEREO-B 21 h _{Y}-163.9 STEREO-B 21 h _{Z}-165.7

**Nota Bene:**

- results for modes 13 and 31: [Zaslavsky et al., 2011]

- results for modes 11, 12 and 21: personal communication by A. Zaslavsky, calibration done on day 2009-01-01.

Credits

This web page has been compiled and is maintained by B. Cecconi

Special thanks to: C. Briand

^{1}, Co-I of STEREO/Waves.Special thanks to: C. Briand

^{1}, V. Krupar^{1,2}, M. Maksimovic^{1}, M. Panchenko^{3}, A. Zaslavsky^{1}.*1. LESIA, Observatoire de Paris, Meudon, France;*

2. Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic;

3. Space Research Institute, Austrian Academy of Sciences, Graz, Austria.2. Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic;

3. Space Research Institute, Austrian Academy of Sciences, Graz, Austria.

For any comments, inputs or suggestion, please contact B. Cecconi.

*Last update: January 22 2015 20:51:29.*