LOW JITTER DEVICE AND SYSTEM
A communication apparatus includes a serializer transmission circuit (TX) configured to receive a plurality of data channels in parallel, and the serializer transmission circuit (TX) transmits data serially as a data stream signal. A film bulk acoustic resonator (FBAR) is coupled with the serializer transmission circuit (TX). The film bulk acoustic resonator is part of an ultra-low phase noise reference oscillator configured to generate an ultra-high frequency reference clock signal.
1 . A communication apparatus comprising:
an ultra-low phase noise reference oscillator configured to generate an ultra-high frequency reference clock signal;
a phase locked loop circuit (PLL) coupled with the ultra-low phase noise reference oscillator and configured to generate a transmission clock signal based on the ultra-high frequency reference clock signal; and
a serializer transmission circuit (TX) coupled with the ultra-low phase noise reference oscillator through the phase locked loop circuit (PLL), the serializer transmission circuit (TX) configured to receive the transmission clock signal and a plurality of data channels in parallel and wherein the serializer transmission circuit (TX) transmits data serially as a data stream signal.
2 . A communication apparatus as recited in claim 1 , wherein the ultra-low phase noise reference oscillator has ultra-low phase noise characteristics comprising at least one of: between approximately −120 dBC/Hz and approximately −110 dBC/Hz at 10 kHz offset from carrier of the ultra-high frequency reference clock signal, between approximately −140 dBC/Hz and approximately −130 dBC/Hz at 100 kHz offset from earner of the ultra-high frequency reference clock signal, and between approximately −160 dBC/Hz and approximately −150 dBC/Hz at 1 MHz offset from carrier of the ultra-high frequency reference clock signal.
3 . A communication apparatus as recited in claim 1 , wherein the ultra-low phase noise reference oscillator has ultra-low phase noise characteristics comprising integrated jitter of approximately twenty femtoseconds or less.
4 . A communication apparatus as recited in claim 1 wherein the ultra-high frequency reference clock signal comprises approximately an S band signal.
5 . A communication apparatus as recited in claim 1 , wherein the phase locked loop circuit (PLL) coupled with the ultra-low phase noise reference oscillator is configured so that the transmission clock signal has ultra-low phase noise characteristics.
6 . A communication apparatus as recited in claim 5 , wherein the ultra-low phase noise characteristics of the transmission clock signal comprise at least one of: between approximately −90 dBC/Hz and approximately −100 dBC/Hz at 10 kHz offset from carrier of the ultra-high frequency reference clock signal between approximately −110 dBC/Hz and approximately −100 dBC/Hz at 100 kHz offset from carrier of the ultra-high frequency reference clock signal, and between approximately −110 dBC/Hz and approximately −100 dBC/Hz at 1 MHz offset from carrier of the ultra-high frequency reference clock signal.
7 . A communication apparatus as recited in claim 5 , wherein the ultra-low phase noise characteristics of the transmission clock signal have integrated jitter of approximately two-hundred femtoseconds or less.
8 . A communication apparatus as recited in claim 1 , wherein the transmission clock signal comprises approximately a Ku band signal.
9 . A communication apparatus as recited in claim 1 , wherein the phase locked loop circuit (PLL) coupled with the ultra-low phase noise reference oscillator is configured to substantially reduce close-in phase noise for the transmission clock signal by substantially tracking-out close-in phase noise of the ultra-low phase noise reference oscillator.
10 . A communication apparatus as recited in claim 1 , wherein the serializer transmission circuit (TX) coupled with the ultra-low phase noise reference oscillator through the phase locked loop circuit (PLL) is configured to transmit data serially as part of a 100 gigabit ethernet system.
11 . A communication apparatus as recited in claim 1 , wherein the serializer transmission circuit (TX) coupled with the ultra-low phase noise reference oscillator through the phase locked loop circuit (PLL) is configured to transmit data serially as part of a 300 gigabit per second optical data link.
12 . A communication apparatus as recited in claim 1 , further comprising a deserializer receiver circuit (RX) having a clock and data recovery circuit (CDR) coupled with the serializer transmission circuit (TX) and configured to substantially recover the transmission clock signal from the data stream signal as a recovered clock signal.
13 . A communication apparatus as recited in claim 12 , wherein the recovered clock signal has ultra-low phase noise characteristics.
14 . A communication apparatus as recited in claim 12 , wherein the recovered clock signal comprises approximately a Ku band signal.
15 . A communication apparatus as recited in claim 1 , wherein the ultra-low phase noise reference oscillator comprises:
a base substrate comprising a bonding pad provided thereover;
a bulk acoustic wave (BAW) resonator disposed on the base substrate;
a lid substrate comprising a bonding pad seal provided thereover, the bonding pad seal bonding with the bonding pad to define a hermetically sealed volume between the lid substrate and the base substrate;
a material layer region provided over a portion of a first surface of the lid substrate within the hermetically sealed volume; and
electronic circuitry provided over or in the material layer region.
16 . A communication apparatus as recited in claim 1 , wherein the ultra-low phase noise reference oscillator comprises a temperature compensated BAW resonator.
17 . A communication apparatus as recited in claim 1 wherein the BAW resonator comprises a film bulk acoustic resonator (FBAR) or a solidly mounted resonator (SMR).
18 . A communication apparatus as recited in claim 1 wherein the ultra-low phase noise reference oscillator comprises a zero drift resonator.
19 . A communication apparatus comprising:
a serializes transmission circuit (TX) configured to receive a plurality of data channels in parallel and wherein the serializer transmission circuit (TX) transmits data serially as a data stream signal; and
a film bulk acoustic resonator (FBAR) or a solidly mounted resonator (SMR) coupled with the serializer transmission circuit (TX).
20 . A communication apparatus as recited in in claim 19 wherein the film bulk acoustic resonator or solidly mounted resonator is part of an ultra-low phase noise reference oscillator configured to generate an ultra-high frequency reference clock signal.
21 . A communication apparatus comprising:
a base substrate having a bonding pad provided thereon;
an bulk acoustic wave (BAW) resonator disposed on the base substrate;
a lid substrate having a bonding pad seal provided thereon, the bonding pad seal bonding with the bonding pad to define a hermetically sealed volume between the lid substrate and the base substrate;
a serializer transmission circuit (TX) coupled with the acoustic resonator and configured to receive a plurality of data channels in parallel and wherein the serializer transmission circuit (TX) transmits data serially as a data stream signal.
22 . A communication apparatus as recited in in claim 21 wherein the BAW resonator is part of an ultra-low phase noise reference oscillator configured to generate an ultra-high frequency reference clock signal.