Title:
広帯域温度補償共振器および広帯域ＶＣＯ
Document Type and Number:
Japanese Patent JP5628436
Kind Code:
B2
Abstract:
A resonator of a VCO includes a fine tuning main varactor circuit, an auxiliary varactor circuit, and a coarse tuning capacitor bank circuit coupled in parallel with an inductance. The main varactor circuit includes a plurality of circuit portions that can be separately disabled. Within each circuit portion is a multiplexing circuit that supplies a selectable one of either a fine tuning control signal (FTAVCS) or a temperature compensation control signal (TCAVCS) onto a varactor control node within the circuit portion. If the circuit portion is enabled then the FTAVCS is supplied onto the control node so that the circuit portion is used for fine tuning. If the circuit portion is disabled then the TCAVCS is supplied onto the control node so that the circuit portion is used to combat VCO frequency drift as a function of temperature. How the voltage of the TCAVCS varies with temperature is digitally programmable.
Inventors:
リウ、リ
ナラソング、チューチャーン
ナラソング、チューチャーン
Application Number:
JP2013532922A
Publication Date:
November 19, 2014
Filing Date:
October 05, 2011
Export Citation:
Assignee:
クゥアルコム・インコーポレイテッドＱＵＡＬＣＯＭＭ ＩＮＣＯＲＰＯＲＡＴＥＤ
International Classes:
H03B5/04; H03B5/12; H03L1/02; H03L7/099
Attorney, Agent or Firm:
Masatoshi Kurata
Toshihiro Fukuhara
Makoto Nakamura
Nobuhisa Nogawa
Toshiro Shirane
Peak Takashi
Yukinaga Yasujiro
Naoki Kono
Sunagawa 克
Iseki Mamoru 3
Takao Akaho
Tadashi Inoue
Tatsushi Sato
Okada Kishi
Mihoko Horiuchi
Masanori Takeuchi
Toshihiro Fukuhara
Makoto Nakamura
Nobuhisa Nogawa
Toshiro Shirane
Peak Takashi
Yukinaga Yasujiro
Naoki Kono
Sunagawa 克
Iseki Mamoru 3
Takao Akaho
Tadashi Inoue
Tatsushi Sato
Okada Kishi
Mihoko Horiuchi
Masanori Takeuchi