Crystal-less oscillator transceiver

Details Crystal-less oscillator transceiver Crystal-less oscillator transceiver

2005-09-13

2005-09-13

Vo, Nguyen T. (Department: 2685)

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

C455S076000

Reexamination Certificate

active

06944432

ABSTRACT:
A radio frequency (RF) transceiver of the type having at least one radio frequency integrated chip (RFIC), a reference oscillator and a phase-locked oscillator, utilizes non-crystal resonator structures in place of crystal oscillators to produce the reference oscillator frequency functionality and the phase-locked oscillator frequency functionality. Film bulk acoustic resonator (FBAR) structures including bulk acoustic wave (BAW) resonators are monolithically integrated or flip chipped with the RFIC to reduce size, weight and cost of the transceiver. The RF transceiver may be a TDMA or CDMA transceiver.

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Film Bulk Acoustic Resonator for RF Filter Application, Jpn. J. Appl. Phys. vol. 39 (Jul. 2000), p. 4115 . . . 4199, Part 1, No. 7A, by Sang-hyun Park, Byeng-Chul Seo, Hee-Dae Park and Giwan Yoon.

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