Portable radio

• US 4,829,591 A
• Filed: 08/19/1986
• Issued: 05/09/1989
• Est. Priority Date: 08/29/1985
• Status: Expired due to Term

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Hashimoto, Kazuya, Asazawa, Hiroshi
• Primary Examiner(s): Griffin, Robert L.
• Assistant Examiner(s): Kuntz, Curtis
• Application Number:
  US06/897,989
• Time in Patent Office: 994 Days
• Field of Search: 455/88, 455/89, 455/90, 455/95, 455/128, 455/129, 455/347, 455/351, 455/132, 455/274, 455/133-135, 455/277, 455/272, 343/702, 375/100
• US Class Current: 455/90.3
• CPC Class Codes: H01Q 1/242 specially adapted for hand-held use
• CPC Class Codes: H01Q 21/28 Combinations of substantially independent non-interacting antenna units or systems multiple beam H01Q25/00
• CPC Class Codes: H01Q 9/0421 with a shorting wall or a shorting pin at one end of the element H01Q9/0414 takes precedence
• CPC Class Codes: H01Q 9/30 with feed to end of elongated active element, e.g. unipole H01Q9/44 takes precedence

Abstract

A portable transceiver has a narrow band square microstrip antenna connected to a first radio receiver, a wideband sleeve or whip antenna connected to an associated duplexer, and a second radio receiver and a transmitter both connected to the wideband antenna via the duplexer. The square microstrip antenna if formed of a conductive emission plate and a conductive ground plate joined by a conductive connector plate. A housing enclosing the transceiver has an earphone and microphone set in its front side, the microstrip antenna under its back side, and the wideband sleeve or whip antenna mounted upright on its top side.

Claims

1. A portable transceiver comprising a housing having a wideband antenna attached to and projecting from a first housing side, a narrow band antenna enclosed within said housing at a first location which is removed from said wideband antenna, transmitter and receiver transducers mounted on said housing at locations opposing said first location, a first receiver circuit means coupled to reproduce signals picked up by said narrow band antenna and to apply them to said receiver transducer, a duplexer means, a second receiver circuit means and a transmitter circuit means coupled through said duplexer means to said wideband antenna, said second receiver circuit means being coupled to said receiver transducer so that diversity reception is performed, said transmitter circuit means being coupled to said transmitter transducer.

2. The transceiver of claim 1 wherein said narrow band antenna includes a ground plate connected via a connector plate to a conductive emission plate.

3. The transceiver of claim 2 wherein said narrow band antenna is a square microstrip antenna.

4. The transceiver of claim 3 wherein said transmitter and receiver transducers are at spaced locations on said housing which induces a user to hold a particular end of said housing, and said first location is at a position which is remote from said particular end.

5. The transceiver of claim 4 wherein said wideband antenna is a sleeve antenna.

6. The transceiver of claim 4 wherein said wideband antenna is a whip antenna.