Title:
周波数発生のための装置及び方法
Document Type and Number:
Japanese Patent JP5805699
Kind Code:
B2
Abstract:
A wideband frequency generator has two or more oscillators for different frequency bands, disposed on the same die within a flip chip package. Coupling between inductors of the two oscillators is reduced by placing one inductor on the die and the other inductor on the package, separating the inductors by a solder bump diameter. The loosely coupled inductors allow manipulation of the LC tank circuit of one of the oscillators to increase the bandwidth of the other oscillator, and vice versa. Preventing undesirable mode of oscillation in one of the oscillators may be achieved by loading the LC tank circuit of the other oscillator with a large capacitance, such as the entire capacitance of the coarse tuning bank of the other oscillator.; Preventing the undesirable mode may also be achieved by decreasing the quality factor of the other oscillator's LC tank and thereby increasing the losses in the tank circuit.
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Inventors:
Rajago Paran Langarajan
Chinmaya Mishra
Maurin Bagat
Jean Jin
Chinmaya Mishra
Maurin Bagat
Jean Jin
Application Number:
JP2013090552A
Publication Date:
November 04, 2015
Filing Date:
April 23, 2013
Export Citation:
Assignee:
QUALCOMM INCORPORATED
International Classes:
H03L7/099; H03B5/08
Domestic Patent References:
| JP2008521274A | ||||
| JP2001332933A | ||||
| JP2005072212A | ||||
| JP2004014645A | ||||
| JP2002539612A | ||||
| JP2004112750A | ||||
| JP2005303839A | ||||
| JP2004120728A | ||||
| JP2003110425A | ||||
| JP2003249865A | ||||
| JP2002252324A |
Foreign References:
| US20060071714 | ||||
| US20080007366 |
Other References:
Z.Safarian and H.Hashemi,A 1.3-6 GHz triple-mode CMOS VCO using coupled inductors,IEEE Custom Integrated Circuits Conference, 2008,2008年 9月21日,pp.69 - 72
Attorney, Agent or Firm:
Kurata Masatoshi
Yoshihiro Fukuhara
Makoto Nakamura
Nobuhisa Nogawa
Toshio Shirane
Takashi Mine
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Morisezo Iseki
Takao Ako
Tadashi Inoue
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori
Yoshihiro Fukuhara
Makoto Nakamura
Nobuhisa Nogawa
Toshio Shirane
Takashi Mine
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Morisezo Iseki
Takao Ako
Tadashi Inoue
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori