Title:
ノイズキャンセリングレシーバのためのブロッカーフィルタリング
Document Type and Number:
Japanese Patent JP6430511
Kind Code:
B2
Abstract:
Techniques for improving rejection of out-of-band interference in a noise-cancelling receive architecture. In an aspect, capacitors blocking in-band signals and passing through out-of-band signals destructively couple an auxiliary mixer output to a mixer output. In a further aspect, cross-coupling capacitors are provided to couple a first signal path with a second signal path of the noise-cancelling receive signal path. Baseband poly phase cross-coupling blocker filtering is further provided for out-of-band interference cancellation to create notch responses at blocker offset frequencies. The techniques disclosed may readily be adapted for multi-phase local oscillator systems.
Inventors:
Hadayathi, Hazyr
Lau, Win Fat
Dunworth, Jeremy Darren
Lau, Win Fat
Dunworth, Jeremy Darren
Application Number:
JP2016537890A
Publication Date:
November 28, 2018
Filing Date:
August 29, 2014
Export Citation:
Assignee:
QUALCOMM INCORPORATED
International Classes:
H04B1/26; H03D7/00; H03D7/14
Domestic Patent References:
| JP6104653A | ||||
| JP2000261250A | ||||
| JP9167920A | ||||
| JP2010193160A |
Attorney, Agent or Firm:
Kurata Masatoshi
Yoshihiro Fukuhara
Morisezo Iseki
Okumura Motohiro
Yoshihiro Fukuhara
Morisezo Iseki
Okumura Motohiro
Previous Patent: 放射線療法のための解剖学的超音波情報と放射線送出情報との実時間融合
Next Patent: TRAVEL CONTROLLER FOR MOBILE AGRICULTURAL MACHINE
Next Patent: TRAVEL CONTROLLER FOR MOBILE AGRICULTURAL MACHINE