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Measured between December 2010 - April 2011

Reciver
 Frequency
[GHz]		 HPBW
[arcsec]		 Main Beam
Effic [%]		 Aperture
Effic [%]		 Calib.
source		 EL comments
S80 86 19.5+-0.1 42+-3 32+-2 Saturn 51 - 55
3C273 55 - 56
110 15.9+-0.2 32+-2 23+-2 Saturn 33 - 36
3C454.3 57 - 55
115 15.4+-0.3 28+-2 19+-2 Saturn 40 - 44
3C454.3 50 - 48

S100 86 18.7+-0.1 46+-3 38+-3 Saturn 51 - 55
3C273 55 - 56
110 15.0+-0.1 38+-3 30+-3 Saturn 33 - 36
3C454.3 57 - 55
115 14.8+-0.2 30+-2 22+-2 Saturn 40 - 44
3C454.3 50 - 48

T100(H) 86 19.0+-0.3 42+-3 34+-3 Saturn 55 - 61
3C273 56
110 17.0+-0.2 42+-3 25+-2 Saturn 31 - 40
3C273 48 - 45
115 15.5+-0.2 36+-3 24+-2 Saturn 45 - 42
3C273 45 - 42

T100(V) 86 18.9+-0.2 43+-3 35+-3 Saturn 55 - 61
3C273 56
110 16.0+-0.2 42+-3 29+-2 Saturn 31 - 40
3C273 48 - 45
115 14.9+-0.2 36+-3 26+-2 Saturn 45 - 42
3C273 45 - 42

The error of the efficiencies is mainly due to uncertainty of brightness temperature of the planet.

  1. Brightness Temperatures (Tb) of the Source (We used temperatures compiled by Shibata 1990)
    Saturn
  2. Diameter of the Planet
    The value is taken from the ASTRONOMICAL ALMANAC.
    In the case of Saturn, the diameters in the polar and equatorial directions are significantly different. In Japanese Ephemeris, only the radius in the polar direction is listed. Therefore, a correction is done with the ratio (1.12) of the diameters in the two directions. The effective diameter is calculated with a formula below:
    2 x (1.12 x polar radius x polar radius) 1/2.
  3. References
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Measured between December 2009 - April 2010

Reciver
 Frequency
[GHz]		 HPBW
[arcsec]		 Main Beam
Effic [%]		 Aperture
Effic [%]		 Calib.
source		 EL comments
S80 86 18.7+-0.1 45+-3 37+-2 Mars 51 - 55
3C273 55 - 56
110 15.3+-0.2 34+-2 26+-2 Mars 33 - 36
3C454.3 57 - 55
115 15.9+-0.2 30+-2 19+-1 Saturn 40 - 44
3C454.3 50 - 48

S100 86 18.4+-0.1 49+-3 42+-2 Mars 51 - 55
3C273 55 - 56
110 15.0+-0.2 38+-2 29+-2 Mars 33 - 36
3C454.3 57 - 55
115 14.9+-0.2 32+-2 23+-1 Saturn 40 - 44
3C454.3 50 - 48

T100(H) 86 19.2+-0.3 49+-4 38+-2 Mars 55 - 61
3C273 56
110 16.5+-0.1 41+-3 26+-2 Mars 31 - 40
3C273 48 - 45
115 15.6+-0.2 38+-3 25+-1 Mars 45 - 42
3C273 45 - 42

T100(V) 86 18.9+-0.2 47+-3 38+-2 Mars 55 - 61
3C273 56
110 15.4+-0.2 42+-3 31+-2 Saturn 31 - 40
3C273 48 - 45
115 14.4+-0.2 38+-3 29+-1 Mars 45 - 42
3C273 45 - 42

The error of the efficiencies is mainly due to uncertainty of brightness temperature of the planet.

  1. Brightness Temperatures (Tb) of the Source (We used temperatures compiled by Shibata 1990)
    Saturn Mars
  2. Diameter of the Planet
    The value is taken from Japanese Ephemeris.
    In the case of Saturn, the diameters in the polar and equatorial directions are significantly different. In Japanese Ephemeris, only the radius in the polar direction is listed. Therefore, a correction is done with the ratio (1.12) of the diameters in the two directions. The effective diameter is calculated with a formula below:
    2 x (1.12 x polar radius x polar radius) 1/2.
  3. References
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Measured between December 2008 - April 2009

Reciver
 Frequency
[GHz]		 HPBW
[arcsec]		 Main Beam
Effic [%]		 Aperture
Effic [%]		 Calib.
source		 EL comments
S80 86 18.2+-0.1 43+-2 38+-2 Saturn 56 - 50
3C273 54 - 56
110 14.5+-0.1 37+-3 31+-3 Saturn 30 - 42
3C273 30 - 42
115 15.5+-0.2 27+-3 18+-2 Saturn 30 - 43
3C273 55 - 52

S100 86 18.1+-0.1 47+-2 41+-2 Saturn 56 - 60
3C273 54 - 56
110 14.3+-0.04 43+-3 36+-3 Saturn 30 - 42
3C273 30 - 42
115 14.7+-0.1 31+-3 23+-3 Saturn 30 - 43
3C273 55 - 52

T100(H) 86 18.3+-0.1 43+-2 37+-2 Saturn 62 - 60
3C273 56 - 54
110 15.3+-0.2 40+-4 31+-3 Saturn 37 - 38
3C273 36 - 39
115 15.4+-0.1 36+-3 24+-3 Saturn 57 - 54
3C273 54 - 52

T100(V) 86 18.4+-0.1 42+-2 36+-2 Saturn 62 - 60
3C273 56 - 54
110 15.4+-0.2 44+-4 33+-4 Saturn 37 - 38
3C273 36 - 39
115 15.0+-0.1 34+-3 25+-3 Saturn 57 - 54
3C273 54 - 52

The error of the efficiencies is mainly due to uncertainty of brightness temperature of the planet.

  1. Brightness Temperatures (Tb) of the Source (We used temperatures compiled by Shibata 1990)
    Saturn
  2. Diameter of the Planet
    The value is taken from Japanese Ephemeris.
    In the case of Saturn, the diameters in the polar and equatorial directions are significantly different. In Japanese Ephemeris, only the radius in the polar direction is listed. Therefore, a correction is done with the ratio (1.12) of the diameters in the two directions. The effective diameter is calculated with a formula below:
    2 x (1.12 x polar radius x polar radius) 1/2.
  3. References
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Measured in November - December 2007

Reciver
 Frequency
[GHz]		 HPBW
[arcsec]		 Main Beam
Effic [%]		 Aperture
Effic [%]		 Calib.
source		 EL comments
S40 43 38.5+-0.1 73+-4 57+-3 Mars 45 - 51
3C454.3 63 - 68
49 33.3+-0.2 72+-4 57+-3 Mars 59 - 68
3C434.3 55 - 59

S80 86 18.4+-0.1 42+-2 36+-2 Mars 70 - 71
3C454.3 38 - 41
110 15.3+-0.2 35+-2 27+-1 Mars 52 - 59
3C454.3 28 - 29
115 14.8+-0.3 27+-2 20+-1 Mars 72 - 73
3C454.3 54 - 55

S100 86 18.2+-0.1 44+-2 38+-2 Mars 54 - 58
3C454.3 29 - 33
110 14.9+-0.1 40+-2 31+-2 Mars 70 - 71
3C454.3 38 - 40
115 14.9+-0.1 32+-2 23+-1 Mars 72 - 73
3C454.3 54 - 56
  1. Brightness Temperatures (Tb) of the Source (We used temperatures compiled by Shibata 1990)
    Mars
  2. Diameter of the Planet
    The value is taken from Japanese Ephemeris.
  3. References
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Measured in December 2006

The measured values for S80 were similar to those measured in 2004. However, the values for S100 became lower. This is due to possible difference in the position of optics caused when the SIS mixer was replaced in autumn 2006. From this result, it is thought that the beam sizes and the efficiencies are the same as those of 2001 in lower frequency bands (except S100).

Reciver
 Frequency
[GHz]		 HPBW
[arcsec]		 Main Beam
Effic [%]		 Aperture
Effic [%]		 Calib.
source		 EL comments
S80 110 14.7+-0.1 36+-3 29+-2 Saturn 42 - 43
3C273 46 - 47
115 14.8+-0.2 29+-2 21+-2 Saturn 51 - 53
3C279 45 - 47

S100 110 14.8+-0.1 42+-3 34+-3 Saturn 42 - 43
3C279 46 - 47
115 14.5+-0.2 34+-2 26+-2 Saturn 51 - 53
3C279 45 - 47

The details of a measuring method are the same as 2001-2002.

Refer to Antenna Efficiency(2001-2002) for the values in all frequency bands.

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2016-06-21

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