# US 5,710,987 A · Receiver having concealed external antenna > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,710,987 A - Document ID: US5710987A - Status: Granted - Kind: A - Application number: 08/459,376 - Filed: 1995-06-02 - Granted: 1998-01-20 - Earliest claimed: 1993-02-25 - Assignees: Motorola, Inc. - Inventors: Thomas Eugene Paulick - Web page: https://patentgrep.com/patent/US5710987A ## CPC - 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 - H01Q 1/242: {specially adapted for hand-held use} - H01Q 1/243: {with built-in antennas} - H01Q 1/244: {extendable from a housing along a given path} - H04B 1/3805: with built-in auxiliary receivers - H04B 1/3833: {Hand-held transceivers} - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) - H04B: TRANSMISSION ## Abstract A radiotelephone/pager unit (100) includes a housing enclosing (102, 104) radiotelephone circuitry (224) coupled to a radiotelephone antenna (108) operable at radiotelephone frequencies and pager circuitry (218) coupled to a pager antenna (212) operable at pager frequencies. The radiotelephone antenna (108) is located outside the housing (102, 104) in a conventional manner. The pager antenna (212) is located outside the housing (102, 104) and concealed under or integrally formed with a hand grip (122), a display lens (402), an escutcheon (502), a keypad (110), or a cap (601) such that the pager antenna's presence is unnoticeable to a user. The pager antenna (212) forms a loop antenna substantially surrounding a user interface element such as a display (112), a keypad (110), an earpiece (114) or volume control buttons (118, 120) to minimize space. ## Claims ### Claim 1 A combination radiotelephone/pager unit including a user interface, comprising: a housing enclosing radiotelephone and pager circuitry; a radiotelephone antenna coupled to the radiotelephone circuitry; and a pager antenna coupled to the pager circuitry; wherein the pager antenna forms a loop surrounding at least a portion of the user interface and is disposed between an outside surface of the housing and the at least a portion of the user interface. ### Claim 2 (depends on 1) A combination radiotelephone/pager unit according to claim 1 further comprising a shield for shielding at least one of the radiotelephone and pager circuitry. ### Claim 3 (depends on 1) A combination radiotelephone/pager unit according to claim 1 wherein the user interface further comprises at least one of the following: an acoustic, a visual and a tactile interface. ### Claim 4 (depends on 3) A combination radiotelephone/pager unit according to claim 3 wherein the acoustic, visual and tactile interface further comprises an electroacoustic transducer, a display and a switch, respectively. ### Claim 5 (depends on 1) A combination radiotelephone/pager unit according to claim 1 wherein the pager antenna is integrally formed with at least a portion of the user interface. ### Claim 6 A combination radiotelephone/pager unit comprising: radiotelephone and pager circuitry; a housing substantially enclosing the radiotelephone and pager circuitry; an electromagnetic shield, disposed in the housing and at least partially covering at least one of the radiotelephone and pager circuitry, formed of an electrically conductive, electromagnetic wave-absorbing material for absorbing electromagnetic energy radiated by or towards the at least one of the radiotelephone and pager circuitry; a radiotelephone antenna coupled to the radiotelephone circuitry; a pager antenna coupled to the pager circuitry, carried on an outside, nonconductive surface of the housing and disposed outside the electomagnetic shield; and a substantially planar and detachable cover, attached to the outside, nonconductive surface of the housing, for concealing the pager antenna between the cover and the outside, nonconductive surface of the housing such that the pager antenna is unnoticeable to a user of the unit. ### Claim 7 (depends on 6) A combination radiotelephone/pager unit according to claim 6 wherein the cover further comprises at least one of the following: a hand grip, a keypad, a lens, an escutcheon, a keypad and a cap. ### Claim 8 (depends on 6) A combination radiotelephone/pager unit according to claim 6 wherein the pager antenna is disposed between the outside surface of the housing and the cover. ### Claim 9 (depends on 6) A combination radiotelephone/pager unit according to claim 6 wherein the pager antenna is integrally formed with the cover. ### Claim 10 (depends on 9) A combination radiotelephone/pager unit according to claim 9 wherein the user interface further comprises at least one of the following: an acoustic, a visual and an active interface. ### Claim 11 (depends on 10) A combination radiotelephone/pager unit according to claim 10 further comprises a user interface substantially surrounded by the loop antenna. ### Claim 12 (depends on 11) A combination radiotelephone/pager unit according to claim 11 wherein the user interface further comprises at least one of the following: an acoustic, a visual and a tactile interface. ### Claim 13 A receiver including a user interface comprising: a housing; receiver circuitry disposed in the housing; and an antenna coupled to the receiver circuitry; wherein the antenna forms a loop surrounding at least a portion of the user interface and is disposed between an outside surface of the housing and the at least a portion of the user interface. ### Claim 14 (depends on 13) A receiver according to claim 13 wherein the user interface further comprises at least one of the following: an acoustic, a visual and a tactile interface. ### Claim 15 (depends on 14) A receiver according to claim 14 wherein the acoustic, visual and tactile interface further comprises an electroacoustic transducer, a display and a switch, respectively. ### Claim 16 (depends on 13) A receiver according to claim 13 wherein the antenna is integrally formed with at least a portion of the user interface. ### Claim 17 A receiver comprising: receiver circuitry; a housing substantially enclosing the receiver circuitry; an electromagnetic shield, disposed in the housing and at least partially covering the receiver circuitry, formed of an electrically conductive, electromagnetic wave-absorbing material for absorbing electromagnetic energy radiated by or towards the receiver circuitry; an antenna coupled to the receiver circuitry, carried on an outside, nonconductive surface of the housing and disposed outside the electomagnetic shield; and a substantially planar and detachable cover, attached to the outside, nonconductive surface of the housing, for concealing the antenna between the cover and the outside, nonconductive surface of the housing such that the antenna is unnoticeable to a user of the receiver. ### Claim 18 (depends on 17) A receiver according to claim 17 wherein the cover further comprises at least one of the following: a hand grip, a keypad, a lens, an escutcheon, a keypad and a cap. ### Claim 19 (depends on 17) A receiver according to claim 17 wherein the antenna is disposed between the outside surface of the housing and the cover. ### Claim 20 (depends on 17) A receiver according to claim 17 wherein the antenna is integrally formed with the cover. ### Claim 21 (depends on 17) A receiver according to claim 17 wherein the antenna further comprises a loop antenna. ### Claim 22 (depends on 21) A receiver according to claim 21 further comprises a user interface substantially surrounded by the loop antenna. ### Claim 23 (depends on 22) A receiver according to claim 22 wherein the user interface further comprises at least one of the following: an acoustic, a visual and a tactile interface.