Home | Links | Contact Us | More About Intellectual Property | Bookmark

Search patents:

Home

Cell Phones

Flat-panel-antenna

Inter-base synchronization technique for a TDMA communication system

OF THE PREFERRED EMBODIMENTS Overview of TDMA Controller FIG. 3 illustrates the preferred ...

Method and circuitry for compensating internal timing errors of a mobile station

An object of their present invention is to provide a new method and a circuitry for compensating ...

Telecommunication management system and user interface

The present invention is a system for managing a telecommunication system on a personal computer ...

Server-to-server event logging

It is an object of the present invention to provide server-to-server event logging wherein events ...

Use of third party ultra wideband devices to establish geo-positional data

A system, method and article of manufacture are provided for determining a location of a wireless ...

Wireless message courier

This invention is a method for delivering electronic messages wirelessly when the sender of a ...

Remote power recharge for electronic equipment

Briefly stated, the invention in simplified form comprises a power transmission unit and a power ...

Remote transmitter and method

The present invention provides devices, systems, and methods for remotely contacting a controller. I...

Miniature remote control system

The Miniature Remote Control System disclosed and claimed below overcomes the problems encountered ...

Remote control systems with ambient noise sensor

The present invention provides a remote control system wherein one or more aspects of the system ...

Flat panel antenna

Details

Inventors: Bateman, Blaine Rexel; Munson, Robert Eugene;
Assignee: Centurion Wireless Technologies, Inc. (Lincoln, NE)
Primary Examiner: Le; Hoanganh
Assistant Examiner:
Attorney, Agent or Firm: Hancock; E. C., Sirr; F. A. Holland & Hart LLP

A small size, flat panel, 1/6.sup.th wavelength antenna is provided. A flat copper-clad dielectric substrate is processed on a first flat side to produce a copper triangular or pseudo triangular-shaped radiating element having a linear copper feed line that extends from the triangle apex. The substrate is also processed on its opposite flat side to produce a rectangular-shaped first copper ground plane element that underlies at least a portion of the copper feed line, but does not underlie the copper radiating element. The first side of the substrate may also be processed to produce a second copper ground plane element that is out of physical engagement with both the copper feed line and the copper radiation element. Aligned through holes are formed in the first ground plane element and the substrate. The metal sheath of a coaxial cable connects to the copper ground plane member(s), and the cable center conductor penetrates the aligned through holes and connects to the copper feed line. The antenna substrate may be a portion of a printed circuit board, or the like, that is within a mobile wireless communication device, such as a laptop computer or a cellular telephone. The antenna ground plane element(s) may also function as the ground plane for another antenna, such as a GPS antenna.

DETAILED DESCRIPTION What is claimed is: 1.
A method of determining the physical dimensions of an antenna having a generally triangular radiating element, having a linear feedline, one end of which includes an apex-area that is defined by a linear extension of two inclined sides of said radiation element, and having a ground plane element that is electrically isolated from and that underlies only said feedline and said apex area, said antenna having an input feed of a known impedance that is connected to said feedline, the method comprising the steps of: selecting a desired center frequency of operation of said antenna; selecting a height of said radiating element as measured from said end of said feedline to a base line of said radiation element, wherein said height is selected as a function of the wavelength of operation of said antenna and said desired center frequency of operation; determining a width of said feedline that produces a feedline impedance that is less than said known input feed impedance; selecting an apex angle for said apex area; construct an antenna having physical dimensions in accordance with the above-defined steps; connecting a first electrical instrument to said input feed and energizing said antenna with a frequency band that includes said desired center frequency; using a second electrical instrument to determine a bandwidth of operation of said energized antenna; and adjusting said height of said radiating element and/or said width of said feedline to achieve a desired bandwidth of operation of said energized antenna wherein said desired center frequency is within said desired bandwidth of operation.
2.
The method of claim 1 wherein said desired bandwidth of operation is a maximum bandwidth of operation.
3.
The method of claim 1 wherein said input feed is connected to a portion of said feedline that excludes said apex area.
4.
The method of claim 1 wherein: said antenna is a 1/6.
sup.
th wavelength antenna; and said selected width of said feedline is about equal to the value in inches of 1

Related patents

	System and method for estimating a set of parameters for a transmission channel in a communication system The present invention comprises a system and method for performing channel estimation in a GSM receiver. The channel estimation operates under the assumption that the ...
	Base station having transmitter power adjustment system OF THE INVENTION The operation of the digital parts of the base station transmitter and of the entire transmitter must be in synchronism with the timing of the general ...
	Transmitting on the downlink using one or more weight vectors determined to achieve a desired radiation pattern OF THE PREFERRED EMBODIMENTS The invention preferably is implemented as part of a wireless communication system with SDMA, in particular a cellular SDMA system. In one ...
	Pulse modulated infrared data communications link This invention provides a pulse modulated infrared data communications link including a transmitter and receiver which can be used, for example, to connect a portable ...
	ASK optical transmitter OF DRAWINGS with reference to FIG. 1, an optical ASK transmitter 10 is shown for use as a transmitter of a prescribed digital code at regular intervals. Such ...
	Differentially coded and guard pulse position modulation for communication networks Having thus described our invention what we claim as new and desire to secure as Letters Patent, is: 1. A method of pulse position encoding data for transmission over a ...
	Wireless in-building telecommunications system for voice and data communications We claim: 1. A wireless in-building telecommunications system for voice and data communications comprising: a control module; a plurality of user modules; said control ...
	Apparatus for exchanging data between a central station and a plurality of wireless remote stations on a time divided commnication channel An apparatus is provided for exchanging data between a central station and a plurality of wireless remote stations on a time divided communication channel. The apparatus ...
	Remote control incorporating self-test capability In accordance with the present invention a method of testing a remote control is provided, which includes generating an output test code and an output test signal, which ...
	Adaptive radio receiver controller method and apparatus What is claimed is: 1. A method of controlling a radio receiver for use in a radio communication system, the radio communication system including a first radio receiver ...

0.014
Archive: All patents - Links Copyright (c)2006 Eipa-patents.org - All rights reserved