Paging receiver with continuously tunable antenna

Details Paging receiver with continuously tunable antenna Paging receiver with continuously tunable antenna

1989-07-18

1991-09-24

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455193, 34082544, 343718, H04B 118

Patent

active

050520490

ABSTRACT:
A paging receiver (10) is disclosed which is compatible with transmissions from analog or digital paging transmitters. The paging receiver has a command structure which permits it to be dynamically programmable to change its functionality including programming of the channel frequencies which the paging receiver is to receive. The programmability of the channel frequencies permits the paging receiver to be used for making national, regional, remote area, local area, and sublocal area pages, and pages to a group in the local area and to switch from channel frequencies which are heavily used during peak paging times to lesser used channels. The paging receiver transmits the paging receiver identification code digits in an order of increasing significance which significantly lessens power consumption for all paging receivers tuned to a particular frequency for determining if a page is to be received which prolongs paging receiver battery life. The paging receiver displays the place of origin of pages as either being of local origin or from other areas. The paging receiver antenna (12) is continuously tunable to permit compensation for variation in antenna gain caused by environmental factors which can seriously degrade signal strength.

REFERENCES:
patent: 3703685 (1972-11-01), Simopoulos
patent: 4223406 (1980-09-01), Someno
patent: 4291414 (1981-09-01), Kimura
patent: 4418428 (1983-11-01), Evans
patent: 4426732 (1984-01-01), Mori
patent: 4686708 (1987-08-01), Oki et al.
patent: 4704734 (1987-11-01), Menich et al.
patent: 4723302 (1988-02-01), Fulmer et al.
patent: 4817196 (1989-03-01), MacNak et al.
patent: 4862516 (1989-08-01), Macnak et al.
patent: 4868885 (1989-09-01), Perry

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