COMMUNICATING APPARATUS

• US 20100066614A1
• Filed: 11/21/2006
• Published: 03/18/2010
• Est. Priority Date: 11/21/2006
• Status: Abandoned Application

• Current Assignee: Pioneer Corporation
• Original Assignee: Pioneer Corporation
• Inventors: Ishitsuka, Tetsuya
• Application Number:
  US12/515,607
• Publication Number:
  US 20100066614A1
• Time in Patent Office: Days
• US Class Current: 343/702
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: H01Q 7/005 with variable reactance for tuning the antenna

Abstract

A communication apparatus (100) includes a first antenna (A1) for receiving carriers on which information signals, which are modulated signals, are superimposed; a ground terminal (50) for causing a reference voltage to be close to zero; a second antenna (A2) (i) that is connected to the ground terminal and (ii) that exhibits an electromagnetically opposite polarity to the first antenna; and a signal processing element (10) that processes the received information signals.

Claims

1. A communicating apparatus comprising;

a first antenna for receiving a carrier wave on which an information signal, which is a modulated signal, is superimposed;

a ground terminal for bringing a reference potential close to zero;

a second antenna, (i) which is connected to said ground terminal and (ii) which has an electromagnetically reverse polarity of said first antenna; and

a signal processing device for performing signal processing on the received information signal.

2. The communicating apparatus according to claim 1, wherein (i) one end of said second antenna is connected to said ground terminal and (ii) the other end of said second antenna is open or is terminated in an impedance of a predetermined amount substantially equivalent to the case of being open.

3. The communicating apparatus according to claim 1, wherein said first antenna and said second antenna are electromagnetically integrally connected.

4. The communicating apparatus according to claim 1, wherein said ground terminal is connected to (i) a first reference terminal, which is the reference potential of said signal processing device, and (ii) all or a part of circuit elements connected to said first reference terminal.

5. The communicating apparatus according to claim 1, wherein said first antenna and said second antenna are (i) electromagnetically integrally connected and physically integrally connected, or (ii) electromagnetically integrally connected but not physically integrally connected.