Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Distributive type parameters
Patent
1993-06-14
1995-11-28
Wieder, Kenneth A.
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Distributive type parameters
455 671, 455115, 4552261, 4552262, H04B 100
Patent
active
054711460
ABSTRACT:
A return loss meter (100) for base stations comprises a first transceiver (10) having a first transmitter (12), a first receiver (22 and 30), and a first antenna (20), a second transceiver (50) having a second transmitter (52), a second receiver (62 and 70), and a second antenna (60), wherein the first transceiver and the second transceiver are cross-coupled using at least one directional coupler (16) capable of being switched. The return loss meter includes a device for measuring reflected and transmitted power of the first antenna via a first directional coupler (16) capable of being switched and via a device (74) capable of measuring received signal strength at the second receiver and a device for measuring reflected and transmitted power of the second antenna via a second directional coupler (56) capable of being switched and via a device (34) capable of measuring received signal strength at the first receiver.
REFERENCES:
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patent: 4868885 (1989-09-01), Perry
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patent: 5129098 (1992-07-01), McGirr et al.
patent: 5287555 (1994-02-01), Wilson et al.
patent: 5289526 (1994-02-01), Chymyck et al.
Krayeski Paul D.
Marko Paul D.
Patsiokas Stelios J.
Meles Pablo
Moore John H.
Motorola Inc.
Nichols Daniel K.
Tobin Christopher M.
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