Appeal No. 2000-1461
Application No. 08/716,905
The examiner concludes that it would have been obvious to modify the modified
Thomas reference by specifically providing a downconverting of the relayed RF periodic
signals to baseband inphase (I) and quadrature phase (Q) signal components, converting
those components to I and Q digital signal components and storing the I and Q digital signal
components in a computer and a wideband signal, as disclosed by Kroeger for the purpose
of providing an inexpensive transceiver, for transmitting and receiving data through a
satellite communication network.
For his part, appellant contends that the essence of the invention is the use of a
“wideband” signal, in the form of an actual modulated data signal, in contrast to a
“narrowband” signal which is swept across the band to make the measurement. Appellant
contends that Thomas does not involve measuring a frequency response of a satellite
transponder and does not involve using a wideband modulated signal in measuring the input
signal power level to the transponder in Thomas. In fact, states appellant, Thomas is “not
particularly relevant to the present invention” [principal brief-page 6] because it simply
provides means for determining the input power level to a transponder.
While Tarantino does disclose measurement of the frequency response of a
transponder, appellant points out that this reference makes a measurement using a
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